low end stumble and big loss in power
Thread Starter
On The Tree
Joined: Apr 2002
Posts: 107
Likes: 0
From: Enfield CT
low end stumble and big loss in power the past few days my car (94 Z28 M6) seemed to hesitate around 1500-2000rpms. Just yesterday it got a lot worse. After i let the clutch out and try to accelerate the car will just bog for a couple of seconds untill i have to give it like 80% throttle and then it finaly goes. Power in every gear is also horrible now. Ive replaced the opti,plugs,wires,coil all within the past 2 years. I was thinking maybe it was a intake manifold leak, O2 sensors or maybe the ICM.
If anyone has any sugestions or ideas about how to hunt this problem down please let me know.
If anyone has any sugestions or ideas about how to hunt this problem down please let me know.
How many miles do you put on your car every year? I change my plugs and wires every 3 oil changes. Probably not neccesary but you should do them about every 10k. As you know, the opti could take a crap at any moment even when its brand new. First, I would check the plug wires and make sure that all of them are still in good shape, no burns or cracks. Next I would move onto the plugs and make sure they all look good and are gapped properly. Then I would look into some of the smaller things such as the IAT sensor, vacuum leaks, ect. Finally I would look at the coil and opti. Theres a lot of things that could go wrong with the ignition sytem of a LT1 in 2 years. Start small and work your way to the more expensive things. Good luck with it.
Thread Starter
On The Tree
Joined: Apr 2002
Posts: 107
Likes: 0
From: Enfield CT
one more thing Theres one thing that is leading me to believe its a intake manifold leak. The fack that the intake (the slp one not the manifold) sound when I put my foot to the floor is almost twice as loud. I wouldnt think that a miss or anything with igniton timing would effect that. And if it was the opti I think i would have thrown off the check engine light because thats what it did last time it took a crap on me.
