GolfGTIforum.co.uk
Model specific boards => Golf mk3 => Topic started by: RobGTI on 02 September 2004, 10:24
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I?ve got an intermittent running problem with the car. Its been driving me up the wall lately, I feel like Basil Faulty (i.e. beating the thing with a branch). Anyway what happens is that I get a misfire / kangaroo petrol effect only between 2500 ? 3500 rpm accompanied by a very slight rough idle (it never stalls and always starts and is fine below and above that stated rev range). The problem can last anything between 30 seconds and 30 minutes then goes back to normal. This happens probably about five times a week.
Otherwise the car runs fine most of the time with the exception of a pop from the exhaust under heavy (red line) acceleration.
So far I have checked and or changed the following:
Timing
Dizzy cap and rotor arm
Plugs and leads
Fuel & air filters
Vacuum hoses
Cleaned throttle body
Tried ?bucket? loads of injector cleaner
No fault codes on the ECU when read
Coming to my wits end here?.. Anyone got any suggestions??
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ECU or Fuel Pump relays mate.
See all the other threads of this nature, there's loads of us that have had the same probs.
Either check em as desribed elsewhere or just go change em both. Cost ya about ?30.
Do that asap if it dont cure it i'll eat a flat cap.
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mine went through a phase of doing this shortly before i switched to optimax full time. also changed the coil (coz it died) and the starter (coz that died next day) around the same time though.
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ecu relay for sure, mine done this too p reg gti 16v,
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part number 165906381 relay location 3
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Was trying to find my original posted query, but its too far back, or i keep missing it.
The symptoms described are exactly how mine went, but mine went on longer and got worse.
Mine is also a P reg so it seems very common when the car gets to that age.
Look in the Garage section and a couple of threads are about miss fire.
To check relays - warm up the engine (short drive) switch off and remove relays, if warm to touch (cheek) then o.k. if cold then change, even if cold one side.
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http://www.golfgtiforum.co.uk/index.php?topic=9093.0
If the above link works it will take ya back to my original thread when i first joined.
I found it! ;D
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Yep Len your link still works. The things mentioned all look promising. I'll go and check the relays now if I can find them. By the way the other thing is I forgot to mention sometimes I can hear a relay clicking away under the dash when driving. I don't if that means that the ecu relay is faulty some of the time? I'll post a reply in 3 weeks to let you know what happened (when I get back off my hols, going tommorow, yipee!) as won't have time to get parts until then.
Thanks for all the responces guys!!
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Just checked the no. 3 relay and it was warm (all sides). But as it's an intermittent fault surely it works some of the time and gets warm??
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Well it could be the Fuel pump relay then. Think thats the one next to it, cant remember without checking the manual.
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Is there any chance anybody could post or email me a picture to verify which relays they are please.
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Any one know what the part numbers are for the ECU & Fuel Pump for a 8V GTi 96(N) reg .
I went to local VW garage today & was told best to get the old ones out then get the numbers of off them as there is so many different ones!! thanks
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Eventually got round to changing the ecu relay, and ..... well the problem has reoccured yet, but as it is an intemittment problem sometimes it would'nt show itself for weeks. Only time will tell. I'll post agin if the problem comes back.........................................
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Any one know what the part numbers are for the ECU & Fuel Pump for a 8V GTi 96(N) reg .
I went to local VW garage today & was told best to get the old ones out then get the numbers of off them as there is so many different ones!! thanks
Would find another dealer if i were you.
They should have asked for your chassis number then could have sold ya the correct ones.
But then i dont think they are any different in the Mk 3.
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Hello again everybody
Does anyone know which numbers are stamped on the Fuel Pump and ECU relays
I don't mean the part number, I mean the number that VW stamp on, e.g 72
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Hi,
I have the Fuel Pump relay in my hand (part No. 165906381) and the No. 30 is stamped on it
I have ordered the ECU relay (part No.191906383C) and should have the No. by later on today
All having the same problems eh ! .
I posted back in January about this fault if this doesn't cure your problem have a look at my thread:
http://www.golfgtiforum.co.uk/index.php?board=5;action=display;threadid=5481
although there's stacks on this throughout the forum.
Mine no-longer cuts out but is very "on & off" with the throttle and prone to the occasional rev-rise and kangarooing
Will post with the ECU No later
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Think the ECU is No. 33.
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The info that I have says that the ECU Engine Management relay is No 30 part #165906381
And the Fuel Pump relay is #167 Part #191906383C
Confusion............