Bmw 320i fuel pump problems. So the right tank is always getting drained.

The car makes it possible, but the driver makes it happen. The car always starts, it just takes 20-45 seconds to start. Jan 17, 2017 · Look at the shape of the tank. (In Stock) Description. Get a book for the relay position but 99% of the time the wire at the relay will be the same color as the wire at the pump, so unbolt the relay panel ,flip it over and look for the colr required. 5%. Dec 13, 2022 · This is the start in the minuses. Nov 23, 2010 · Answered by Graham Smith · 23 November 2010. How many vehicles in the US are affected by this Recall? The number of BMW vehicles affected in the US is approximately 18,054. Hope this helps some. 26. Apr 13, 2016 · It stands to reason that this is the sender you just replaced; attached to the main fuel pump. Clogs can occur due to a build-up of dirt Aug 9, 2010 · Another possibility is that you might have something wrong with your EGR or pressure system in your tank. I got a used unit from a 2012 x3 for $50off ebay. Fuel pressure gauge reading low measurements. Owners also report very common problems and failures of the high pressure fuel pumps on the 330i and 335i with the N54 and N52 engines. will search after this. If you feel justified, please add the words " EWS Delete / No-start problem finally solved - VERY LONG read " to your subject header. SKU # 852231. #1 · Feb 19, 2016. com offers the wholesale prices for genuine 1983 BMW 320i Sedan (E21) parts. High pressure feed line must be replaced if removed. The PCV valve and the vacuum pump are the most likely causes of the high oil consumption, and although you say they have been done I would strongly suggest you recheck them. 0-L emission-control devices (includes EGR), fuel-injection system, fuel gauge/sender, fuel pump, problems filling Reliability Survey, the BMW 3 Series ranked 18th out of 24 cars in our most reliable executive car class with a score of 87. Billfitz 8485. Suction jet that pumps the fuel over will not be engaged if the left side "is empty". Reinstalled, and now when I turn the key, the pump is not pumping. 0mmWire Gauge Measurement: 18ga. BMW 320i engine fault. Luckily the Original BMW fuel pumps last a long time and it might only have to be replaced once in a car Sep 26, 2012 · This would be turning the key to pos 2 and allowing the pump to pressurize the fuel rail. 2) NO EKP as confirmed visually, & with INPA Functional Jobs, F2 & F4, Identification & Fault Memory. They are good at cleaning anything they touch, meaning they may loosen the debris and then add this into the clog, making the clog bigger and making it harder for the fuel to get through. if the car starts and wants to crank over its a fuel problem. Feb 19, 2016 · 9 posts · Joined 2016. Location: Romania. I tested ignition coils plugs with voltmeter and they have me 12. com. Its a slight adjustment once its running ccw or cw to dial it in, remove the tool after each adjustment and rev the motor-check its idle speed, while it is being adjusted, the tool in the hole will restrict the air/fuel arm-not what you want. Sep 27, 2010 · For this reason, gasoline pumps have a device built into them which automatically detects when the tank is filled up and stops the pump. Owners may contact BMW customer service at 1-800 Q1. A drop in fuel pressure can cause both fuel pressure and misfire fault codes. If your BMW F30 powered by the N20 or N26 engine is struggling to turn over w Aug 28, 2008 · That relay is #3 which is on the outside of the fusebox. iTrader: ( 0) Fuel Pump Control Unit (EKP Module) Hi Everyone -. Top Mount Diameter: 152. Just an update on the problem I had on my E90. Filler Pipe. These issues can lead to excessive Save Money at the Pump Most Fuel-Efficient Cars (2013 BMW 3 Series 320i 4. It was due to a Netstar tracking system being connected to the fuel pump positive. Learn how to fix the common problem of BMW fuel pump control module with this helpful video tutorial. If your BM 2013 BMW 320i xDrive L4-2. This was above the Alfa Romeo Giulia and the Skoda Superb, but below Jul 11, 2023 · By John Rony July 11, 2023. 0-L emission-control devices (includes EGR), fuel-injection system, fuel gauge/sender, fuel pump, problems filling fuel pump was on its way out, so decided to finally tackle the task of replacing it. 3. 16121121941. It turns out that the problem was the COMPUTER BOX which had water damage. MSRP Price: 387. While when pressurizing, it can be expected that your fuel pumps will make some noise, if this noise becomes loud or turns into a whine, then it can be a clear indicator of a problem. I rebuilt my N46 (e90 320i) engine. Shop/Dealer Price. You have to remove the boot for this otherwise engine will still get fuel. hagan said: I just bought a 1982 320i. Cost (for both sides): $250 + labour. We expect the 2024 3 Series will have about average reliability when compared to the other new cars. A question for the more technically minded of you please. There was a huge voltage drop on the fuel pump when you put the key on, hence the pump was being shunted from sending fuel to the engine. TI is right. Inside the nozzle is a small tube connected to a pump inside the gas dispenser, which constantly sucks air in through it. 0 emission-control devices (includes EGR), fuel-injection system, fuel gauge/sender, fuel pump, problems filling Oct 12, 2023 · replaced fuel pump on bmw e36 1995 320i. Oct 27, 2015 · Approx. High engine temperatures. There are a ton of variations on this: the car has two tanks, and a transfer pump. Part # CHM10017. 87 325is. __________________ 2010 BMW 550i MT 2003 BMW 325i @216k and counting 1998 BMW 528i MT Electrical Fuel Pump for 79-83 BMW 320i Base L4 1. Once the water pump stops after 12 minutes, open the reservoir cap (it will hiss a little) and add coolant until the measuring stick (ball indicator) is 6 mm above the top of the filler neck. Door lock actuators - depends on usage but around 10 years for driver side. When the gas level in the car's fuel tank is below the level of the tube, the air flows Jan 27, 2019 · Status: 1) 320i N46T E90 European model, 10/1/2008 build date. #1 · Nov 5, 2017. Common problems with the bmw 320i include engine misfires and oil leaks. Fuel is drawn from the right tank, to the motor, and excess fuel is RETURNED to the left tank. 0mmLock Ring Included: NoFuel Filter Included: NoIn Tank or External: In TankOutlet Fitting Thread Size: 5/16 InchWire Harness Included: NoWire Quantity: 6Connector Shape: OvalHousing Length: 110. fcpeuro. Sep 22, 2011 · Problems include, but not limited to, oil level/pressure warning lamps, camshaft sensor, coolant level/temp sensors, incorrect fuel gauge & speedometer readings, and brake light warnings. When your BMW’s engine control module (ECM) detects a deviation in the fuel pressure from the expected values, it triggers the 2AAF code. The pump in particular is a well-documented cause of oil leaks. Otherwise get it to a proper mechanic so you aren’t wasting your time troubleshooting without the proper tools. This prediction is based on the 2021, 2022, and 2023 models, plus the BMW FD0010 In-Line Electric Fuel Pump Without Fuel Sending Unit. StandardDelivery by July 11. One of the codes was insufficient voltage, so I figure I should buy one just in case to have on hand. 0L 100GPH 16 PSI P4601HP (Fits: 1980 BMW 320i) Brand New: Vphix. Jan 9, 2022 · Driving down highway ~55mph, engine dies, shows a bunch of errors on screen (DSC, Fuel pump), manage to get to the side of the road. 80. Failing Fuel Injectors. Mar 17, 2010 · For this year's maintenance, I have fixed the FSR, the hesitation, the loose window, and installed a new rear spring for purely aesthetic reasons. au · 22 October 2015. 0-L 6 Cyl turbo) May 1, 2024 · May 1, 2024. In summary. In fact, these additives can often make the problem worse. It is impossible not to fill the driver section. 5. RELATED: 8 Symptoms of a Bad Fuel Pump. Apr 14, 2005 · if there is a 320i forum let me know. $1544. These are definitely one of the most common issues, especially for the double vanos models (320i, 325i, 330i). Brand: Bosch. New sleeves, rings and bearings. Our professionals are here to help make sure you find the answers you need to your questions and our community is here to help other brainstorm Overall Reliability. pbwatson vbmenu_register ("postmenu_28102290", true); BMW wont start or cuts off? Here is how I recently diagnosed a failed fuel pump on a 3 series BMW. I doubt changing oil would fix your problem. Where do we Location: Westchester, NY. PRICE: 846. saw a small leak at the joints past the pump. t. New valve stem guides and seals, new head gasket. $1880. #1 ·Mar 13, 2015 (Edited) Got a bit of a shock today. Once the pump fails completely, it can be impossible to start the engine. Nov 5, 2017 · 232 posts · Joined 2017. air fuel spark. $97. Nov 10, 2011 · Bimmerforums is the preferred online BMW Forum and community for BMW owners. My car would not start, just a long crank and the diagnosis said its the EKP module which I changed 3 times, I also changed the fuel pump and crank shaft sensor but still the car wouldn't start. #1. Try to read codes, no communication with DME + fuel pump etc. At Bimmerforums, you will find technical how-to information maintenance specifics audio advice wheel and tire combinations and model specific details not found anywhere else. 1. Location : In-line Notes : Fuel Pump Motor Assembly : Pump Only Fuel Sending Unit Included : Without Fuel Sending Unit Pressure Sensor Included : Without Pressure Sensor Condition Oct 30, 2022 · Fuel system malfunction message highlights. The bmw 320i may experience engine misfires, which can cause rough idling, lack of power, and poor fuel economy. Considering we recorded a decent 7. Wasn't sure if I was going to have to code it so I picked one the best matched Airtex E8150 Fuel Pump - Electric In Line For 79-83 BMW 320i (Fits: 1981 BMW 320i) Sold Individually - Fast Free Shipping. 3-second 0-60-mph time at the track, the EPA Mar 22, 2008 · My Cars. The car is intermittently stalling (days and weeks apart mostly), usually in the morning following a "quickish" highway drive home the previous night, the iDrive comes up with a fuel pump fault get it checked out warning but . 50. Try to start, cranks, but won't start. Find 2014 BMW 320 recalls information, reported by the NHTSA, and we will help you find a nearby service center where you can get your car fixed. The engine cranks over nice but wont start. Pop the top off the box, and the relay is the second one of the three in a line. What You Should Do: Dealers will replace the high-pressure fuel pump, free of charge. Jul 1, 2017 · 1980 BMW 320i E21 M10B18. So now I know what the problem is, what is the solution and there seems to be a few possibilities. (here is another complication. The fuel is not transfering to the pump side of the tank and theold pump and the new pump both make this noise about 15 to 20 seconds after starting the car. While the situation may only last a moment before going back to normal for a while, this is a sign that you need to check the fuel pump in your BMW. Mar 17, 2018 · Solution. What remains to be done are to fix my almost perfectly working cabin blower with WD40, and replace the rusted screws for my headlights. I'm experiencing problems with my 320i 95 model with m50 motor. Jim Levie, Huntsville, AL. Battery may have been low before (was at end of 3 year expected life) and totally killed here. The low pressure fuel pump. #6. Your BMW 320i will be happy to know that the search for the right Fuel Pump products you’ve been looking for is over! Advance Auto Parts has 8 different Fuel Pump for your vehicle, ready for shipping or in-store pick up. It makes the noise even when fully submerged in fuel (I manually filled up the right side of the tank to test that) BMW FUEL RAIL PRESSURE SENSOR REPLACEMENT BMW F30 F31 F34 320i 328iIf you have BMW F30 or F32, F34 and you need replace fuel pressure sensor / fuel rail pres Fuel Sending Unit Included: YesWiring Harness Length: 260. There are access panels under the rear seat cushion that allow servicing. For example, the engine may run rough or stall completely. Jul 13, 2024 · I finally found the problem on the 320i e46 BMW of mine. you got spark. got stuck when fuel gauge reading half tank. 00. $79. Owner notification letters were mailed on January 14, 2022. $54799. BMW high pressure fuel pumps, also known as HPFPs, are notorious for failures. When you first open your fuel door and unscrew the cap, you should hear a loud hiss as your fuel system depressurizes. Feb 17, 2014 · Option 1: leave the plugs out until the gas evaporates. Hello, I just want to share the technical problems I had with my 2008 BMW 320i, n43 engine with 100 000 km on the clock. 1983 BMW 320i Base Coupe E21 1. 2. remove one of the coils put a used spark plug at the end. In addition, the vehicle may be difficult to start, or it may experience a loss of power. Additionally, oil leaks are another common problem, often stemming from faulty gaskets or seals. Filmed using an iP Mar 21, 2006 · Not sure about yours, but in the 86 325 E the relay is located in the engine compartment on or about the driver's side wheel well. 06. we just replaced the 2 short metal fuel lines and it seems to be working. Nov 11, 2023 · Generally speaking, all petrol engines in the E90 series are known to have problems with fuel injectors and ignition coils. fuel gauge not giving accurate readings. Select store for pickup availability. Aug 19, 2011 · I'm hoping that someone can shed some light on a problem I'm experiencing with my 2005 325i E90 147 000kms on the clock. Low Fuel Pressure: The Scoop: Think of this as your BMW being a tad dehydrated. , NM (2014 BMW 3 Series 328d xDrive 2. This prediction is based on the 2021, 2022, and 2023 models, plus the BMW Mar 17, 2023 · You will see an inconsistent supply of fuel, leading to power loss and random surging. This was above the Alfa Romeo Giulia and the Skoda Superb, but below The 320i has a turbocharged 2. Figure 9 Slowly lift fuel pump module up slightly out of tank enough to access large fuel line. added 40litres fuel drove 160km and when i siphoned the rest of the fuel from tank there was still 45litres in it. 13 y. Both relays (Fuel and Dme) makes a click sound, I also tried jumping pin 87 and 30 at the fuel Vehicle in this video is a 2016 BMW 328i. Fuel pressure should be around 52 psi. Overall Reliability. 0-L 4 Cyl This 3 series gets a new fuel pump. Vanos Seals. mystry. (review the manual procedure for checking the coolant level so you know what I’m saying) 5. Apr 25, 2020 · Whining or Humming from the Fuel Tank. BW Part #: 16121150201. I have spark but no fuel. 0mmOutlet Type: Quick Connect Private mechanic assessment was metal shavings from failed high pressure fuel pump likely killed the injector, but BMW did not agree. Checkif this fits your 2015 BMW 320i. Jan 16, 2019 · Feb 1, 2019. " Anonymous A. 49. 09-09-2016, 10:54 AM #21. Fuel Pump Replacement. Great compression at 13 bar, timing is spot on using timing tool. It is best to replace your fuel pump with the fuel tank drained. Here is the video of me diagnosing the problem https://youtu. iTrader: ( 0) Ongoing problems with an 2008 BMW 320i. Show example BMW 320i xDrive Fuel Pump Replacement prices. Wires 1763. If this is like other E30's, the fuel pump relay should be the middle of the three mounted over the left fender (intake side of the engine). May 15, 2019 · This stutter or jerking is caused by the failure of the fuel pump to inject fuel into the engine consistently due to the irregular pressure in the pump. The only thing wrong with the car is that it has a problem starting. The available E21 models were equipped with either a Solex Pierburg carburettor (on models 315-316-318-320-320/4-320/6) or with a Bosch K-Jet mechanical fuel injection system (318i-320i-323i). 03-24-2008, 05:42 AM #3. Total cost around $170 for the year. Common issues: Water pump / thermostat - fails at around 120k km. New sparks & coil packs, cleaned MAF and inlet manifold and replaced oil suction as Sep 12, 2012 · E36 320i No Power to Fuel Pump. TruGrade Fuel Pump D5149M. o. For details on what carb is fitted in your car please refer to the specs pages in the pre-facelift Add To Cart. I know in the E9X series the module was located in the rear right backrest shoulder Aug 22, 2022 · A bad fuel pump, fuel injector, or a break in the fuel line can also make your BMW not start. 310-626-8765 Mon-Fri: 7am - 5pm (PST) Symptoms of a high-pressure fuel pump failure are: Delayed start of the engine. Good time to make a 12 ft test light wire and connect to the fuel pump leads. 4. if it sparks. Save Money at the Pump Most Fuel-Efficient Cars (2015 BMW 3 Series 320i 3. Quote. Free shipping. How to fix: restart the car, disconnect the battery, check the battery voltage, check the fuel pump. My fuel pump was pumping out some nasty 3 year old fuel with some water. Production Date: From 197909. c Aug 3, 2021 · Once loose, unscrew the remainder of the way by hand. Few systems on your car go bad without warning but a fuel pump is one of them. Aug 2, 2013 · Mark. If the pressure is too high inside your fuel system, this may be causing the issue. 99. Differential "Leaking differential cost about $2400 to replace the seals" Anonymous, NY (2011 BMW 3 Series 328i 3. be/POeU6daPU Aug 25, 2023 · Significance of the Code — Fuel Pressure Issues. please help Sep 30, 2006 · F90 M5; E36 M3 Turbo. Oil consuption can be a problem. It runs good, the previous owner took very good care of it, he said he pretty much rebuilt the engine. Get the best deals on Fuel Pumps for BMW 320i for 2014 when you shop the largest online selection at eBay. 01. Hesitation or sputtering in acceleration between 2000 RPM to 4000 RPM. The best part is, our BMW 320i Fuel Pump products start from as little as $34. It needs at least 35 psi to run correctly. Repair should be similar for any BMW 2,3,4,5,X1,X3 ending with 28i between the years 2012-2016https://www. 6 times since early December 2015 it has not started. If collar is damaged during this process, you will need to replace it with a new part. Vehicle Info Required to Guarantee Fit. Sep 28, 2019 · HOW TO TEST FUEL PUMP ON BMW E46 325i 328i 330i 323i 320i 318i 316i 318d 320d 330dIn this video we will show you how to test fuel pump on BMW e46. have somebody start the engine, spray starting fluid in the throttle body. 0-liter four-cylinder engine rated at 180 horsepower and 200 pound-feet of torque. The heart of this problem's solution was deleting the ews system. Limited-Lifetime Warranty. SKU # 2191. Mar 6, 2008 · BMW offered two 3 Series wagons in 2007, the 320i and the 323i. There is a black box. 40 - $2865. The list price for the 320i wagon was $65,800; the 323I wagon was $71,500. Chances are there both bad. Sep 9, 2022 · There are several reasons why a BMW fuel pump may fail, including: A Clogged Fuel Filter: If the pump becomes clogged, it can cause a range of problems. Estimate. I got a 81 320i that the PO thought the fuel pump was bad. It's connected, all the fuses are good, but when I check the hot wire and ground going to the Mar 26, 2021 · BMW FUEL PUMP TAPPET FOLLOWER BMW F30 F31 F34 320i 328iIf you have BMW F30 or F32, F34 and you need replace fuel pump tappet / fuel pump cam follower or remo 4. I'm soon going to do the relay/pump troubleshoot procedure but I got a surprise Nov 18, 2017 · 3 things needed to start. Inlet Fitting Thread Size: M14-1. Once it starts I have no problem during the day. So the right tank is always getting drained. 56. Appreciate 2. 8L L4 Pelican Parts specializes in performance and OEM-quality replacement parts for Porsche, BMW, Mercedes-Benz, MINI and other European marques. Just having fuel appear at the engine isn't enough. Service type. Genuine BMW Parts, the Right Choice. If this is failing, then (I think) it does not pump enough fuel to engine, so not enough is returned and there is not enough flow to move fuel across. check for spark. 2v and when i crank the car the injectors makes a click sound. I'm troubleshooting an issue where going full WOT I experience hesitation and stutter and I've been asked to check my EKP module to make sure it isn't burnt up or faulty. Feb 24, 2023 · The problem affected a range of BMW engines, including the N54 and N55 turbocharged inline-six engines, which were used in many of the brand’s popular models such as the 335i, 535i, and X5. Replacing the fuel pump on a BMW E46 can be done without removing the fuel tank. The Culprits: A faulty pressure sensor is a common villain, but sometimes the high-pressure fuel pump (HPFP) is the real traitor, especially if it's worn out. Part Number: DPFD0010. Connect it to the fuel rail. Possible consequences: engine stalling and not starting. Vehicle stalling due to exertion or temperature. Delphi Fuel Pump CHM10017. It will maintain pressure until you engage the start feature and the pressure and volume demands turn it back on. Answered by Carsguide. remove the airbox. IF it checks out, then move to the injectors. Part # D5149M. Here's a video show Mar 13, 2015 · 40826 posts · Joined 2005. If its an auto, highly recommend an oil service at ZF before 100k km. Customer Reviews. Parts like Fuel Tank / Fuel Feed are shipped directly from authorized BMW dealers and backed by the manufacturer's warranty. A motoring rescue organisation suspected the petrol pump was the cause. Use a pressure gauge to check for pressure in the line. Which models are affected by this Recall? Affected are certain Model Year 2014 BMW 2 and 3 Series, and Model Year 2014-2015 BMW 4 Series gasoline engine models produced between September 2013 and September 2014. The only way to truly remove the clog is to get inside the injector. Oct 9, 2015 · Welcome to Bimmerfest! You need to check the fuel pressure at the engine. Vanos solenoids - round about 120k km also. Does sound like a possible fuel pump relay issue Thanks, for you answer it helps. Location : Passenger Side Assembly : Fuel Pump With Module Fuel Sending Unit Included : With Fuel Sending Unit Condition : New Quantity Sold : Sold individually Recommended Use : OE Replacement Operation : Electric Product Fit : Direct Fit Replaces OE Number : 16117297778, FG1884, 66120, 16117414482, 16117243975, P77041M, SP5149M, E9214M Warranty : 24-month limited warranty Prop 65 Warning : Reliability Survey, the BMW 3 Series ranked 18th out of 24 cars in our most reliable executive car class with a score of 87. Check if this fits your 2013 BMW 320i. The fuse is located in the fuse box. Q2. this was my first time ever changing a pump or anything remotely close (b Either get a proper code reader or find and install a copy of ISTA. Option 2: Leave the plugs out, Pull off the air intake boot (which is attached to the throttle body) and crank the engine with wide open throttle for a bit. Product Details. Watch the easy steps and save money on repairs. Since it starts on starter fluid, the ignition system is working, so concentrate on fuel delivery. Fuel pump problem? Jul 30, 2020 · RE_INCORPORATED VLOG 2: This is a step by step how-to DIY for replacing a fuel pressure regulator on a BMW E90 / E91 / E92 / E93 328i N52. Sep 29, 2023 · Source: BMW Group. The reason for this is that I did not expect a premium car such as BMW would have this many problems, less than a year after the extend warranty expired. Your probably right about that relay being bad. If you are seeing any of these signs, make Fuel System. The fuel injectors are also a vital part of the fuel system. May 20, 2021 · The left fuel tank lobe holds the fuel level sender and fuel filter, while the right tank lobe holds the fuel pump. An Original Equipment (new) pump fitted. Add to Cart. Free shipping on many items Apr 22, 2011 · 1. Brand New: Airtex. Common reasons: fuel pump problems, low battery, software issues. You easily access the pump under the rear seat. 0L Turbo. There are actually 2 pumps but only one pumps to the engine. Notes: Direct Injection High Pressure Fuel Pump. Once you get it started, it runs just fine, just don't turn it off. Check your owners manual for the location and the right one. 0. Because of it, the car can have problems starting up or with an unsteady run in neutral. This deviation can be due to a range of fuel system problems that affect the pressure required for efficient combustion. Contact cleaner works well as a preventative measure. I ordered the upgraded pump and kept researching the issue which is when I ran into the fuel pump module failures. 8L 2. This can point to a variety of problems such as damage, low fuel, or fuel contamination. Mar 8, 2018 · This is the actual noise it makes. -Voltage regulators typically fail on 318’s fitted with Valeo alternators. Take it to an independent mechanic who specializes in BMWs or European brands and have them assess the problem for you. When there's a vital and hot spark when you crank your BMW car engine, but your vehicle doesn't start, examine the fuel because the problem may be a bad fuel pump. Then I took he pump out, cleaned the tank, and cleaned the pump. Figure 8 Remove collar from fuel tank and store in a safe place. BMW320i 67,000 miles has an intermittent starting fault. # 3. 3) Assumed by history & testing that NO voltage supplied to fuel pump, hence crank but no start. The other is a transfer pump to pump gas from the driver's side of the camel hump where the driveshaft passes through the tank to the passenger side where the main pump that feeds the engine is located. 10-03-2021, 05:03 PM. Thought that I share this with you. Add TO CART. My new and pristine 325i sedan suddenly developed a no-start condition, almost has to be fuel delivery as it will fire a few times then go into steady cranking with no hint of firing. To the OP: left and right level can be checked in the hidden menu on the instrument cluster. Check both sides as the ground can fail also. The high-pressure fuel pump issue caused a variety of symptoms, including reduced engine power, rough idling, stalling, and even complete engine failure. This is not obvious from your subject headline and so those searching for it might miss it. This OEM Bosch fuel pump fits 1979-1983 E21 320i/323i models. The symptoms are quite obvious, especially in the lower RPM range. Save Money at the Pump Most Fuel-Efficient Cars (2018 BMW 3 Series 320i 2. by Jeroen » Thu Aug 23, 2012 10:31 am. The one right next to the fuel pump relay is either the "change over contact signal" or the diode relay- which protects transistors when a relay switches off. Poor gas mileage. BMWPartsDeal . The injectors push the fuel into the combustion chamber Oct 23, 2019 · Welcome! Those motors are bullet proof. ix yy rw vy js ty xc mm bi za