IansCorrado 0 Posted July 16, 2008 I have a 1990 1.8 16v Corrado which hesitates under acceleration when the engine is cold. The problem clears as soon as the engine is up to temperature. I have recently fitted new (genuine VAG) plugs, leads, cap, rotor arm, fuel / air filters, oil / filter change, new timing belt inc tensioner / water pump etc but it is no better. I have been told it could be the cold start valve? I have checked for power to the valve and it is present. The car has been stood for 2 years which I suppose could mean some rubbish has been sucked up when it was first started? With power to the cold start valve, I assume it could be a fault with the valve itself? Are new ones expensive? The idle stability valve buzzes as it should so I assume the fault is not with that? The vac advance pipes are all present and correct etc. The garage who did the cambelt ran a compression test which came out perfectly equal across all four pots. The car is reliable and I know I could drive it anywhere, its just annoying when it plays up from cold. Many thanks in advance! Ian :confused4: Quote Share this post Link to post Share on other sites
Supercharged 2 Posted July 16, 2008 Try running it with the valve unplugged. Quote Share this post Link to post Share on other sites
IansCorrado 0 Posted July 16, 2008 What will I be looking for mate? :confused4: Just unplugged it, runs the same. As soon as its been running 1-2 mins its fine again Does this prove the valve is knackered? :scratch: Quote Share this post Link to post Share on other sites
