Sunday, June 14, 2009 - 09:51 pm, by: Michael Toet(Myke31)
Andrew, did you manage to work out what was going on?
I have a similar issue where the car is fine until it warms up. Once heat is in the engine it is sluggish until about 3000rpm when it just takes off as normal. Its almost as if it is in the wrong gear. I have no mods, no BFI, no nothing. So I am hoping to resolve it before doing the BFI mod.
Sunday, June 14, 2009 - 11:31 pm, by: Damian Ware(Frozenpod)
Andrew the ISCV is almost impossible to damage. There is no contact for the stepper motor and the only moving parts are the bearings and valve. It is near impossible to burn out the windings.
The bearings do wear out and need to be replaced which will in most cases return it to a perfect working unit.
The ISCV also has nothing to do with a sluggish response.
From my experience unplugging the AFM has a massively changes the operation of the engine.
This is both with faulty AFM and good AFM's.
My suggestion is that your AFM could be ok and that either your O2 sensors are stuffed or that more than likely your ECU is on the way out.