Question about 1991 Volkswagen GTI

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Mk2 1991 gti 8v wiring loom

I have put a new engine into my car. the problem is that the fuel pump is constantly running and keeping the injectors open. It seems to be a relay at fault. I have no wiring loom diagram to work from so cannot make any progress. Can Anyone help?

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  • jplw Jan 04, 2009

    I have got the opposite problem, my fuel pump won't run and I've got no live feed to the ecu? I've replaced the relay and check all the wire connections. Could it be the fuse box?
    Any help will be much appreciated.

  • cooldude360 Jan 15, 2009

    My car does exactly the same but i bought it like this a year ago and covered approximately 20,000 km since with no problem. Its just that if you turn the key to the dash lighting up but dont start the car up, then the fuel pump continously pumps fuel, doesnt stop after a few seconds like my other gti... Is this dangerous??



1 Answer

You have blown up the ecu as a result of not having a good earth connection from the earth lead on the gearbox.
This is a very common problem (done it myself!)
Only solution is to get the ecu repaired or replaced.
You must change the oil and filter before trying to start the car again.

Posted on Jul 02, 2008


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