Idling at 35000 rpm?

[Baz2004 0]

My 16V is idling at 35000rpm starts Ok and sits around 1100 after a few mins any throttling and it shoots up to 3500 and does not return.. I checked the throttle body and it seems fine, could this be a problem with the injector housing as I replaced a couple of lines recently?

 

There seems to be a build up of pressure also in the water I recently replaced expansion cap, I thought that might be due to an airlock can this in any way cause the problem?

[Supercharged 2]

My 16V is idling at 35000rpm

 

Jesus man - that must be loud!!! :lol:

 

Have you checked/cleaned the ISV??

[VR6 0]

Accelerator cable been replaced recently?

 

Just thinking that it's odd that it idles at 3.5 once you've touched the throttle.

[Baz2004 0]

The cable is actually slack hasn’t been replaced recently, its quite loud alright but noise it the last thing im worried about !

 

Was getting nowhere adjusting the ISV either, seems to start and idle Ok when started from cold start. Don’t notice it climbing to 3000+ when left idle either.

[Coley17778 0]

can u stop this by pulling the acc pedal towards u if so sounds like a cable problem

[GIXXERUK 0]

disconnect the cable to take it out of the equation

[chubbybrown 0]

disconnect isv and see what happens

[Baz2004 0]

ill disconnect the ISV and tomorrow and see what happens, already tried the pedal don’t think that sticking.

[Red=Fast 0]

Try removing the cable and seeing if that helps. I had the same problem right before the throttle cable snapped.

[Baz2004 0]

OK found the problem at the weekend came at the end of a 12 hour day on the car brought much relief. Turned out to be a broken switch (Thermotime switch) after trying new ISv and cold start valves and taking off and putting on 2 different inlet manifolds + throttle bodies as well as changing fuel injectors + lines to mention a few things I was beginning to loose faith then I found the loose wire and clip by chance when I went hunting for a Allen key dropped when fitting the cold start valve.

 

The minute I touched the clip off the switch the engine settled back down to 900 rpm – sweet J broke the circuit and she jumped up to 3000 - problem solved, made my day that was for sure.