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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 11-19-2012, 02:21 AM
SpinfisherBob SpinfisherBob is offline
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Location: nj
 
Join Date: Nov 2012
Posts: 5
Mein Auto: bmw
sweet 1995 325i convertible

I bought a 1995 325i convertible for my Daugther July of this year. Has run great until this last week when it just stopped. Turns over and will fire with a drop of starting fluid. I let it sit a couple days and it fired and ran perfectly all day....then nothing the next day. I do not hear the fuel pump engage. Lifted the back seat and put a meter on the fuel pump plugs...with key on the white plug reads 12 volts, the black plug 0 volts. I had the key turn the engine over and still registered 0 volts on the black plug....the relays all click when the key is on... I applied 12 volts to the disconnected fuel pump...it runs....now what
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  #2  
Old 11-19-2012, 07:19 AM
hornhospital's Avatar
hornhospital hornhospital is offline
D'oh, You kids!
Location: In the Grumpy Chair
 
Join Date: Jan 2008
Posts: 14,360
Mein Auto: 1995 318is / 1993 325is
Possible: Fuel pump relay. Clicking means nothing. They can click and still not work. More likely: crank position sensor.
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Old 11-19-2012, 01:40 PM
SpinfisherBob SpinfisherBob is offline
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Location: nj
 
Join Date: Nov 2012
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Mein Auto: bmw
crank position sensor

Any way to test crank position sensor?

I swapped Solenoids with the same numbers and colors... Light green ones with the number 464.....with no result. Not sure witch solenoid runs the fuel pump though...

I do not sense the fuel pump running with one hand on the key and the other on the pump.

When I powered the pump directly, it was pretty quiet. Did not rev very high to my mind. I tried powering the pump directly while my kid turned the key....nada, reversed polarity...nada

I was hoping for a straight up diagnostic, but this is part of the joy...mixed signals

Last edited by SpinfisherBob; 11-19-2012 at 01:55 PM. Reason: addition idea
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Old 11-19-2012, 02:34 PM
SpinfisherBob SpinfisherBob is offline
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Location: nj
 
Join Date: Nov 2012
Posts: 5
Mein Auto: bmw
sweet 1995 325i convertible

I have located the fuel pump relay...N0. 1 in the Haynes manual, cleaned contacts, replaced...nada

I know I have spark cause she fires with a drop of starting fluid...I'm strongly leaning to throwing a relay and the fuel pump at her....there is a circuit diagram on the side of the orange BMW relay....will try test the relay on the bench next....
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