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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E36 (1991 - 1999)

E36 (1991 - 1999)
The E36 chassis 3-Series BMW was a huge hit among driving enthusiasts from the first moment the car hit the pavement. The E36 won numerous awards over the years it was produced and is still a favorite of many BMW enthusiasts to this day! -- View the E36 Wiki

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  #1  
Old 09-12-2012, 09:17 AM
MKM455GP MKM455GP is offline
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Location: PRETORIA, SOUTH AFRICA
 
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Mein Auto: BMW E36 320I 1995
E36 320i No Power to Fuel Pump

Hi Guys
I'm experiencing problems with my 320i 95 model with m50 motor. I have spark but no fuel. I tested ignition coils plugs with voltmeter and they have me 12.2v and when i crank the car the injectors makes a click sound. Both relays (Fuel and Dme) makes a click sound, I also tried jumping pin 87 and 30 at the fuel relay no power to the fuel pump. I tested the fuel with the battery it works fine. Any idea what could be causing no power to the fuel pump plug? Could it be a broken wire? Where do i begin? Thanks, i know some countries don't have the e36 320i but the wiring must the same.
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  #2  
Old 09-12-2012, 01:09 PM
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Kdoherty Kdoherty is offline
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It sounds like there's a break in the circuit. If the fuse isn't blown it halfway rules out an actual short. I'd assume since you tested the actual pump the rear seat is out, check the wires for continuity. one lead of a multimeter on the wires from the relay and one to the wires ending at the pump connector. if any read OL or 9999999999999 you can be fairly certain you have a break there. Fortunately there's not a whole bunch of wiring to track down due to the relatively short distance between the tank and relay.
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Old 09-12-2012, 09:35 PM
MKM455GP MKM455GP is offline
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Mein Auto: BMW E36 320I 1995
Thanks Kdoherty - i also suspected a broken wire to the pump, i wanted a second opinion on this, as I wanted to rule out the Dme and Crank sensor. I will check the wiring and fortunately isn't a lot of wiring to the Pump
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Old 09-26-2012, 01:58 PM
MKM455GP MKM455GP is offline
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Mein Auto: BMW E36 320I 1995
I checked thoroughly and also checked the fuel fuse, I realised that the fuse contact we burnt, i cleaned them and i finally had power to the fuel pump.
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