J 92 MK2 Golf GTI 16V engine cutting out below 1000 rpm

[nilly]

I wonder if anyone has seen this problem before? The engine runs fine as long as the revs stay above 1000 rpm and runs well too, once the revs dip the engine just stalls, it starts up fine, I have just had it serviced, it has new HT leads aswell. I just bought it and it had half a tank of premium unleaded (97)and it ran fine until I filled the tank up with normal unleaded (95), it then started cutting out, could this be the cause?

[tinman]

I wonder if anyone has seen this problem before? The engine runs fine as long as the revs stay above 1000 rpm and runs well too, once the revs dip the engine just stalls, it starts up fine, I have just had it serviced, it has new HT leads aswell. I just bought it and it had half a tank of premium unleaded (97)and it ran fine until I filled the tank up with normal unleaded (95), it then started cutting out, could this be the cause?

Might want to look at putting in new injectors. Use the Bosch part and not VAG part as they are identical, but Bosch are cheaper. Everyone thinks that injectors last forever, but they need replacing every 80-90k. When changed they can make a huge difference to the performance.

Can't see why the change in petrol would make a difference. Not even sure if it should be on 97 in the first place.

[Leon R]

There are quite a few reasons why a 16v can stall, a main one is to clean your ISV, a cylinder that sits along the right hand side of the head near the dizzy with 1 electrical plug and 2 vac pipes. This gets clogged with oil and doesn't operate correctly. Try cleaning it with brake/carb cleaner.

On mine I had coolant temp sender to ECU problems, the TCI module (sits on top of the ECU was shorting out) the ECU pins were corroded and the CO was miles out. (not all at the same time!)

Let us know how you get on. I take it you have adjusted the idle above 1k to stop it stalling?

As Tinman said the cahnge in petrol shouldnt make your car stall but it can make a difference to performance. Run it on super unleaded 97 ron, as with 95 ron your car should and will sound like its pinking which is never good for the engine.

[Conker]

Like Leon said I would look at idle/CO2 settings first and then double check for air leaks on any vac pipes.

[DanChave]

I'm currently having this problem! how do you go about setting the idle?

[Gambit]

http://www.golfgtiforum.co.uk/index.php?topic=22031.0

[DanChave]

Ah, there is no idle screw on the mk3 throttle body

[Gambit]

might be an idea if you post in the mk3 forum then!

[DanChave]

Yeah, found this thread on a google search and didn't spot the mk2 in the title

[mk2rolf16v]

Can't see why the change in petrol would make a difference. Not even sure if it should be on 97 in the first place.

Are you sure about that??..... Mk2 Gti's - valvers most definitely should always be run on premium unleaded. It even says on the filler flap.