jcg928s

Hey guys!

Ok whether it is cold or warm. takes a bit to start. cranks and cranks, then after trying a couple to a few times, she starts.......runs like crap (low idle, misses terribly if you give it gas. Only clears in this stage after about 3-4K RPM)

Then after about roughly 20-30 seconds. It clears completely. revs perfectly, idles normally. As if nothing is wrong.

Whether I do it when she is warm or ice cold it does the same thing. Driving after the stubborn 20-30 seconds it runs perfect.

Any thoughts guys?

Thanks,

Joey

Mongo

L-Jet car with symptoms like that usually means the auxiliary air valve or the Temp II sensor is wonky.

jcg928s

Thanks Mongo. After some research, it looks like the same symptoms are typical with the Aux Air valve.

Looks like I will be ordering one from 928intl. The car has 117K. I guess its about time.

Jherriott

Is that an expensive item? I am having the EXACT same problem. I thought it might be a gasket leak on the intake that sealed up once it got warm... but now, like you, it happens hot or cold...

destructo_low

I removed the aux air valve, the cold start injector, the carbon canister, the vacuum limiter, and the piping to the cats from the air pump when I did my fuel system. I have three vacuum lines now after getting rid of the dampers and regulators. I haven't had it in cold weather yet, so we will see how it does.