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MY 1996 AGG ENGINE GOLF GTI WON'T START. NO SPARK NO INJECTOR PULSING. ENGINE AND PUMP RELAYS OK NEW HALL SENDER IN DISSY, NEW CRANK SENDER, AND COIL UNIT.NO FAULTS SHOWING ON DIAGNOSTICS.ANY SUGGESTIONS.
Check for 12v at injector plug if no 12v this is fed from the ecu so backtrack all fuses and ecu feeds
you may need new ecu control unit but be sure to check all 12v feeds and earths etc
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check ignition S.w . check fuel pump. some time reading coil if getting hot it will not start make sure this happend when engine hot . but if when cold engine you have fuel pump or ignition S.W
Did you resolve this?
I drive a mk3 golf GTI 8V and mine starts fine but after driving for about 3 minutes (engine warms up) it starts to misfire, the car stalls and then you can't start it again until the engine has cooled. Does this sound similar?
check voltage to both coil and hall sender. should get battery voltage across two outer terminals on hall sender. battery voltage at black wire on coil. should get 5volts[pulsing] out put on center wire on hall sender. if input voltage ok but out put not, hall sender faulty. coil and fuel pump need an engine speed signal to activate.
My mk3 1996 16v 2ltr was playing up, wouldnt start when cold, wouldnt rev above 4500-5000. I changed the ignition switch, ecu relay, petrol pump relay, plugs,plug leads, coil, and finally, checked the hall sender on the dizzy, and found a broken wire in the dizzy body. Got a 2nd hand dizzy from a breakers for 40 quid, (150 or more new) and all is well. (I actually took the car to two garages and they couldnt find the problems, no faults registered on vagcom).
Just found your problem while looking for solutions to my own. My 2.0 8v 3door 97 golf gti can also cut out after driving for two or three minutes. Works fine one day then dies instantly 5 times the next...not a safe thing to happen pulling out of a junction!! Have researched problem and been told that it's probably fixable for £12-15. The "Hall Sender Relay" which is the fancy name for the ecu's power supply relay can go on the blink and cut power at any time causing instant shutdown...just like turning off the ignition key. Part number is 165906381 and available from a local vw dealer usually overnight. I'm fitting mine tomorrow 4/4/09...fingers crossed!
Hope this helps others...worth a try for the cost involved.
Allymac
what about checking the ignition or the fuel pump relay? i wouldnt try touching the positive and negative leads together even after five minutes as the ciruit has capacitors and inductors in them and this could cause damage to the electronics.if there's no fuel and no spark it sounds like a common fault. try disconnecting your immobiliser behind the glove box (most of the mk3's starts with them disconnected)
fuel relay could be faulty. i think its number 30 or 167 in the fuse box under the driver side steering. it could also be the fuel pump or connector on the fuel pump under the black metal plate under your trunk carpet. you could try manually throwing in fuel into the intake to make sure its not your car's ecu or ignition system. if it starts and stays running it could be what took me a few months to discover after i had intermittent problems. there a small vacuum hose from the fifth injector on a 1997 mk3 gti (4 cylinder) that connects to the injector rail. i think its some kind of activation for the electronic injectors. my pipe was broken and i just cut it and my car hasnt been better since! i know this is an old question but i hope it helps someone out there!
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