jessebuickguy

iTrader: (1)

My 1995 z28 was sitting in the garage for about a week, I was waiting on my last torq thurst wheel to come in

I installed the new rim today, and decided to take it out for a spin. The car ran fine for about 15 min, then suddenly at a stop my idle got choppy. Acceleration felt horrible afterwards, the car didn't want to rev past 2 grand. I figured that maybe a little condensation got into the opti, so I continued to drive. After a while the car felt normal again. Then after a couple of more minutes the car felt like **** again, and then once again a few minutes later the car felt great again. So is the opti that shitty that a week in storage will kill it? Could it be a sensor perhaps? I'm lost... The almost NEW GM opti barely has 2grand on it, I have new taylor over the valve cover wires, and a new msd ignition coil. What could cause the car to have such intermittent ignition trouble? I also noticed that there is alot of moisture coming out of the exhaust, even after 2hrs of driving!!

here are a couple of quick pics of the car i took with my phone if you guys are curious..

Ponch95

iTrader: (5)

Sounds more like a vacum leak or a fuel pump going out, run down to O'reillys or autozone and do a fuel preassure check and a vacume check

shutzero

kinda sounds like whats goin on with my car, cant figure it out

robsquikz28

iTrader: (246)

yep id say check fuel psi first....i had a very similar problem.

BizZzatch350

iTrader: (33)

Check the fuel pressure and the ICM.

TrikeMike

iTrader: (7)

I have no value to add to this thread but nice z.

crookedbowtie

Same problem, I have already checked pressure and vacuum. How do you check the ICM?

AChotrod

iTrader: (17)

Beautiful car!!! Did you grease the plug boots?

Drumer919

iTrader: (2)

Same thing here too, how do you check it?

crookedbowtie

I took mine to Napa they have a tester. Mine checked out good though. Make sure they get heat into it while testing it. I also brought it back did the spacer mod added some dielectric grease and ...same prob. Tested my coil primaries and secondaries cold with volt meter... and the values are within spec and match a new one! I am going to try to test it when it is hot tomorrow. I'll let you know. I bought a new ICM and coil just in case.

Imrayzor666

Check the gap on your spark plugs. My wife's truck would run like **** when the throttle was floored. The plugs were so old that the gap that should have been .054 had opened to .090 or more. She also had a rough idle that was fixed when I found and fixed the vacuum leak. Good luck!

crookedbowtie

I have no vacuum leaks, checked with carb cleaner. Plugs are new and gapped correctly.

Jessebuick guy I hope you don't feel like I jacked your thread, but hopefully I can help rule some things out.