Cascade Crew

crazychevy87 · New Member Joined: 13 Mar 2011 Posts: 8

Camaro will run for 15-20min then shuts off. If I disconnect the battery for 5min then reconnect it and the engine will run for 15-20min then shut off again. Does anyone know if there is an anti-theft code in the ECM or fuel cut-off?

aaron_sK · Posted: Tue Dec 13, 2011 10:20 pm Post subject:

What car?

What engine/intake/ecm?

When it dies does it lose fuel or does it lose spark?

Twilightoptics · Posted: Tue Dec 13, 2011 10:25 pm Post subject:

No antitheft system in our cars has that much delay.

aaron_sK · Posted: Tue Dec 13, 2011 10:29 pm Post subject:

I just realized he mentioned an '87 IROC on here before. Laughing

BluFbdy · Posted: Wed Dec 14, 2011 9:39 am Post subject:

Must be the expirmental vats gm secretly snuck into a few cars! super delay so your car can be stolen BUT be within a 20 mins drive in any direction Laughing

thats a joke btw...just a disclaimer... anyway lets start with the basics, pull any codes? like arron said are you losing fuel? losing spark? do it again and monitor both issues and see whats going on because no antitheft will do that lol

Alphius · Posted: Wed Dec 14, 2011 10:09 am Post subject:

Here's a question: If you don't disconnect the battery for 5 minutes will it still not start?

91RSVert · Posted: Wed Dec 14, 2011 10:11 am Post subject:

Would 87 even have vats? (I dunno what year they started that).

The vats on my car wont even let it crank.

Sounds to me like the ICM or coil is getting hot and stalling.

BluFbdy · Posted: Wed Dec 14, 2011 10:24 am Post subject:

aaron_sK · Posted: Wed Dec 14, 2011 5:59 pm Post subject:

I agree that it sounds like a heat soak issue, but there are numerous things that can heat soak.

Could be the pump pulling a vacuum on the tank.

Hell he could have put a carb on it and it's vapor locking! With no info we're all just shooting in the dark. Rolling Eyes

crazychevy87 · New Member Joined: 13 Mar 2011 Posts: 8

It's a rebuilt motor with new injectors, new distributor, new cap, new plugs, new plug wires, new starter. I haven't pulled any codes because I am waiting on a cable for my code reader for my camaro. Since I have new parts does anyone know why it would shut off other than the codes? Also I don't have a VATS.

91RSVert · Posted: Wed Dec 14, 2011 7:03 pm Post subject:

You dont need a cable to pull codes unless you have an aftermarket wire system.

And just cause it has new parts, doesnt mean they are good. In fact, I would look at them parts first Laughing

So, as mentioned......
ICM
Coil
pickup coil
Suction on the tank

I would start with checking for codes.

aaron_sK · Posted: Wed Dec 14, 2011 7:04 pm Post subject:

Does the CEL come on?

As Jay said you don't need a code reader for most pre-OBD2 stuff, just use a jumper.

All new parts are suspect.

Alphius · Posted: Wed Dec 14, 2011 8:31 pm Post subject:

Still wondering... Is it the waiting 5 minutes or the disconnecting of the battery that fixes it?

That would help narrow down whether or not it's heat soak. Wink

Dv8 · Member Joined: 05 Mar 2010 Posts: 108 Location: Ruston WA

My money is on the distributor module.... Very Happy

BluFbdy · Posted: Thu Dec 15, 2011 1:14 pm Post subject:

From past experience ill say cap and rotor lol

Leejo2005 · Member Joined: 12 Jul 2009 Posts: 466 Location: Kennewick

My 1992 S10 4.3 just did this a couple days ago. The ignition coil and wire that goes to dist cap were horribly corroded. Would run fine sometimes, choppy other times, and not start a few times. I got a new coil and wires and it runs great. Don't forget your connector grease!

Twilightoptics · Posted: Thu Dec 15, 2011 2:45 pm Post subject:

Need more symptoms other than just shuts off. Does it miss? Buck? Hesitate?Surge? Or just off like a light switch?

IROCDave · Posted: Fri Dec 16, 2011 4:35 pm Post subject:

crazychevy87 · New Member Joined: 13 Mar 2011 Posts: 8

Replaced the ignition coil and it ran fine. Then tightened the lifters some and it won't start it just cranks. I'm not sure if they are too tight or if some thing else is the problem.

BluFbdy · Posted: Mon Jan 02, 2012 9:03 am Post subject:

Start from scratch, air fuel spark, can't really restrict air, soooo.... spark and fuel?