racemyski

Was the cracked intake the actual intake pipe or an intake manifold?

deathblooms

I think I might be having the same problem as you, it just started today actually. I went and filled up my tank (93 octane) and drove to my gf's house and everything was normal, I turned it off for 15min, and when i turned it back on it started idling funny, and when you give it gas it acts like it doesnt want to go at all, it does that skipping thing your describing, and its also vibrating funny. I have replaced my IAC recently, at about 40k, my car now has 64k on it, also the front O2 sensors were also replaced about the same time as the IAC. My car isnt throwing any codes either, so I dont have any idea wtf is going on. I think im going to call Justin at VMP tuning and see if he can help, since he was the one that tuned my car. Oh and for futher info, my car is a 01 GT Auto, with just some basic bolt ons. If anyone can offer any help, please let me know. Thanks!

Brute03

idk, it sounds like an ignition related problem to me. a bad COP will usually make itself know under load at lower rpms

jefster411

my intake was cracked at the thermostat. it had coolant running down on some of the spark plugs so i thought that might have been causing my miss, but it wasnt.

ying.yang.gt

Not always the case.
After running the car all day, about a year ago, car started to sputter and lost power. Pulled over, turned it off and looked under the hood, found nothing. Got in turned the key and no more problem. Car would go a few months fine then same problem. No codes, no check engine. Pressure test of fuel sys, "low pres when hot". I'm going to replace the pump this week, car still runs, no codes and no check engine.