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Old 17 September 2005, 11:39 AM   #1
Bmw.E36.M3
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Default Impreza wrx wont start after crank sensor replacement !

Yesterday my mates Impreza '95 Wrx wouldnt start after a short run. We checked the ecu fault codes which gave an 11 which is for the crank sensor.
Replaced the crank sensor this morning and reset ecu. The car will still not start and is not showing any ecu fault codes !

Anyone got any ideas ?
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Old 17 September 2005, 02:06 PM   #2
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Question car still wont start

have checked timing all lines upremoved petrol line on the out side of fuel filter no petrol came out ,cranked engine over very very little petrol came, any idea how to check if petrol pump is working ? cheers desperate mark
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Old 17 September 2005, 02:19 PM   #3
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Quote:
Originally Posted by Bmw.E36.M3
have checked timing all lines upremoved petrol line on the out side of fuel filter no petrol came out ,cranked engine over very very little petrol came, any idea how to check if petrol pump is working ? cheers desperate mark
It should **** out in a big way, first for about 2 ish seconds when you first turn on the ignition, then when you are cranking the engine, I can hear mine "buzz" in the boot, I had a lose wire on mine in the tank, also does it have an imobiliser ? you could get a voltmeter / test light and see if you are getting power to the pump
Tim
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Old 17 September 2005, 02:29 PM   #4
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Question fuel pump

cant here any buzzing, am going check if there is any power to pump,
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Old 17 September 2005, 02:46 PM   #5
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Default pump

got the back seat out which wires are for the pump ?
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Old 17 September 2005, 02:54 PM   #6
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how many are on it ? do you use msn ? if so send me your id
Tim
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Old 17 September 2005, 03:03 PM   #7
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Question petrol pump wires

found what i think are the feed to pump, block of four wires, 2 thicker ones and 2 thinner ones , tested with volt meter have power but only to one of the thinner ones ,is this right ? can hear no priming when ignition is switched on
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Old 17 September 2005, 03:36 PM   #8
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Quote:
Originally Posted by Bmw.E36.M3
found what i think are the feed to pump, block of four wires, 2 thicker ones and 2 thinner ones , tested with volt meter have power but only to one of the thinner ones ,is this right ? can hear no priming when ignition is switched on
nope , should have 12 v across the 2 thick ones when you first turn ignition on for approx 2 sec`s, or at least for a short time, to pressurise system, then when cranking, check both sides of the plug, I have seen the wire break inside plug to tank, is there an imobilicer fitted to the car ?
Tim
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Old 17 September 2005, 03:37 PM   #9
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ps the thin ones are for the gauge,
Tim
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Old 17 September 2005, 04:16 PM   #10
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Angry petrol pump wires

took the plug off the pump cover tested voltage it dropped when cranking it over still only voltage at one wire, yes i have an imobiliser ,i suppose this makes it more complicated ? near to tears now lol cheers mark
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Old 17 September 2005, 04:37 PM   #11
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Thumbs up pump wires

tim you were right ,thicker wire does get voltage for about a second then nothing but voltage returns when i crank it over does this point to the pump or am i just hoping ?
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Old 17 September 2005, 04:45 PM   #12
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Default pump feed

definately got voltage to pump must be pump mustn't it?
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Old 17 September 2005, 04:52 PM   #13
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Quote:
Originally Posted by Bmw.E36.M3
tim you were right ,thicker wire does get voltage for about a second then nothing but voltage returns when i crank it over does this point to the pump or am i just hoping ?
yep points to the pump or the connections to it, have a very good check of the plug onto the top of the tank first, if not remove cover , then unbolt tank cover / pump assembly in boot / through seats, again have a good look at the connections, on mine someone had fitted an uprated pump and the plug wasn`t quite right, you could also try the pump on a seperate battery,
be carefull with any form of spark when you have the "roof" off the tank, do not reconect the pump with it all open with the ignition switched on, and I would suggest a "mate " with a co2 / powder fire extinguisher about just in case,
Tim
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Old 17 September 2005, 06:02 PM   #14
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Angry pump

took pump out primes itself then spins when engine turned over back to square one, tears are definately getting closer help ! cheers mark
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Old 17 September 2005, 06:21 PM   #15
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Quote:
Originally Posted by Bmw.E36.M3
took pump out primes itself then spins when engine turned over back to square one, tears are definately getting closer help ! cheers mark
primes and spins ?? but no fuel out of the other end ?
Tim
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Old 17 September 2005, 06:25 PM   #16
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Question pump

i connected it up out of the petrol tank, also tryed it with a seperate battery
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Old 17 September 2005, 06:25 PM
 
 
 
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02, 04, 2004, bmw, crank, cranks, crankshaft, e36, kit, replacement, sensor, start, subaru, test, wrx


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