TVR S2 Idle

[Notned]

Hi guys, any one got any advice? S2 on cold start is running up to about 2000rpm but not coming back down again when it warms up. If I then turn off the engine and restart it's back to normal approx 1000rpm tick over. It only happens from cold start...

[v8s4me]

Is that the 2.8 engine? If so, check the vacuum pipes from the manifold to the cold start thingy and the metering head.

[Notned]

It's the 2.9i

[ukflyboy]

When you stay only happens from cold start, how hot do things have to get for it to start and idle properly? Could be an air leak that seals up once things expand a bit?? For anything temp related then swapping the AFM connectors over is always a good shout, as only one of them sends a temperature signal, so can quickly rule out errors there for zero cost.

[mentall]

Sticky ISCV (idle speed valve) would be my first guess. Lots of advice here and elsewhere.

[Notned]

Cheers for that. I'll try some of these and report back...