So lately the cobra has been acting up in an annoying manner.
So, half the time the car starts and drive perfectly normally. However, the other half, its been doing this.
At start up, revs drop immediately instead of holding 1000rpm and dip to 750ish or so. Vacuum is low, i.e. at 5 inches of vacuum at 800rpm cold idle.
For the most part, the car runs fine, but after a good hard pull, the idle sometimes dips, and even when it doesn't, at a hot 800rpm idle, the vacuum is like 8in/hg as opposed to the 13-14 it normally is.
I did a datalog and nothing looks out of the ordinary for the fuel trims, maf ad counts, engine load or anything else, but of course, during the datalog it was acting fine.
Anything you guys can think of? I checked for vacuum leaks and intake obstructions, blower impellar looks fine as do all the clamped connections.
Car pulls hard on full throttle but tends to break up a bit more than normal at very light throttle.
I figure since its very intermitant its gotta be an electrical problem, be it the maf, CPS, Cam sensor, etc.
Any help would be appreciated.
Thanks
So, half the time the car starts and drive perfectly normally. However, the other half, its been doing this.
At start up, revs drop immediately instead of holding 1000rpm and dip to 750ish or so. Vacuum is low, i.e. at 5 inches of vacuum at 800rpm cold idle.
For the most part, the car runs fine, but after a good hard pull, the idle sometimes dips, and even when it doesn't, at a hot 800rpm idle, the vacuum is like 8in/hg as opposed to the 13-14 it normally is.
I did a datalog and nothing looks out of the ordinary for the fuel trims, maf ad counts, engine load or anything else, but of course, during the datalog it was acting fine.
Anything you guys can think of? I checked for vacuum leaks and intake obstructions, blower impellar looks fine as do all the clamped connections.
Car pulls hard on full throttle but tends to break up a bit more than normal at very light throttle.
I figure since its very intermitant its gotta be an electrical problem, be it the maf, CPS, Cam sensor, etc.
Any help would be appreciated.
Thanks