goblue9976

I was driving my 05 z28 today (87k miles, new opti), and it just died. No warning signs, didnt act like it was stalling, it just flat out died. All of the lights were on, and never dimmed. It wouldnt start for about 5 minutes, then started. I had to crank it for about 2 seconds and then it fired. I pull it out of the road, and into a parking lot (about a 16th of a mile) and it did the same thing. 5 minutes later, it started up and drove home fine. Any ideas?

mdenz3

Sounds ignition related, where did you get your new opti from?

BlackDog

If it didn't throw any codes, I would check the coil, ICM and fuel pump.

goblue9976

I just bought the car. I can call the guy and ask where he got the opti from (its a buddys brother) if that would help. What is the ICM?

goblue9976

Is it normal for the voltage to be just above the "danger zone" at idle, and jump up to around 13 at any rpm over idle?

goblue9976

morning bump...

1SWT95Z

Maybe the ignition switch or the lock cylinder? I had mine turn off like that going about 75 down the interstate.

Mauiguyy911

dont think thats normal, seein how my car has never done that...also, its prob not the ignition lock cylinder since that usually will stop the car from starting all together, not kill it while driving...did you check the wire connection to the coil, when mine use to come lose while i was driving, my car would die immediately without warning, then i would wiggle the wire around and whadda-u-kno, started right up...but kept coming lose so it actually happened like 5 times before i took some pliers, and bent the sides of the wire where it connected to the coil so it would stay on better. And if it is the coil ,chances are that you will almost always hear a spark coming from under the hood if its not connected, its located right under your intake on the drivers side. So i would check that and the ICM which is the little black box right above the coil, then maybe fuel etc..

goblue9976

Update. It did it again, and this time, i smelled burning wires. The driver side fan dosent work, so Im thinking that becuase of the headers, and the lack of air coming through, that the coil or the ICM got fried. Am I on the right track on that?

2000GTP

The ICM is the ignition control module. If you smell something burning, then that may give you some visual clues. Check over all the wiring and ignition components really well for starters.

Injuneer

Did you scan it for codes?

goblue9976

Yea, and the weird thing is, there wasnt any codes even though my Service Engine light is on. I went to 2 different autozones, and used a Tech-II at my school and they all said the same thing. (or lack of anything)

EDIT: If I have a MSD 6al ignition box, would I have to get a MSD coil, or would a factory one work? (I got another factory coil, but I dont feel like wasting the time to put it on if it wont work.)

Eddie Z-28

[QUOTE=goblue9976;4576979]I was driving my 05 z28 todayQUOTE]

I think we would all love to drive our 05 Z-28s.

goblue9976

I said 95 in the title. If you have any ideas, please let me know. I just replaced the ICM, and now its even worse. Now, when it starts (will start 1 in 10 trys, if that), it acts like its not getting any fuel. Anything higher than idle RPM and it dies. I noticed it was acting like it was stalling, and then it got progressively worse as time went on while driving it earlyer today.

95Z-DAWG

Check your MAF sensor. My Z died on me one day driving down the highway. Turned out it was the MAF....$400 for a new one at the time. It didn't throw any codes either.