Question about 2000 Volkswagen Golf

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Mk4 Gold Gti underperforming and overfueling

My Mk4 Gti recently had a engine swap, with a new motor, its all good..eventualy the next thing to go was my battery, after replacing it the car was flying faster than chuck noriis's punches, after a week or its started degrading steadily, as if there is not enough air pressure running through the system, thats probalby the wrong way to discribe it but the bottem line is its performing at like a fraction of what it did after the bat was replaced, ive noted frequent backfiring, (it bacfired when it was running fine, but not as prominent) and also when i change gears and step onthe gass there is a delay, overfeuling and feels like the turbo only kicks in after 3000 revs/m, where i think it should kick in at 2000rpm. it has a dumpvalve on it, we've retraed the vacume source to another point whihc has improved the dumping, but it soounds pissy, not pressured..anyway, hope this clarifies.

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  • rudi_stadler Feb 03, 2010

    Howsit dirtBOY,

    Thanks for the response, firstly, that is what i assumed happened after we replaced the battery, they ECU was reset, which yippy was great, but like i said it degraded, so i have detached the bat a couple of times leaving it 30 min to an hour, no change. so im not to sure. like mentioned the DV is rerouted to a vacuum valve right from the oil stick, below that small protective cover coming front the factory DV.

    this improved the dumpig as before we changed it it hardly made a whistle...

    so i am assuming there is lack of air, whihc obviously leads to over fueling, the questions is what is causing that,

    some have said its chipped and i need to remove it, whihc i think is bollocks



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Your computer prob needs resetting. Good luck.

Posted on Feb 03, 2010


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