art5518

I have a 2000 camaro z28 ls1 speed. The car was running great last week, and all of a sudden wouldn't start. I let the car sit for 40min and it turned on no prob but 10min later once it warmed up, it just turned off. The car won't turn back on. It has to cool down, until it turns on. Once the car is warm, it just cranks, but it wont start. I checked the spark, and it has no spark once it's warm. Any help will be appreciated. Thanks

Hemi2Slo

Sounds like maybe VATS has went nuts.

art5518

What's vats? I'm new to this. My buddy said to change the crank position sensor

Old Geezer

iTrader: (3)

Data log it, and see what comes up when the problem occurs...

Exeodus

iTrader: (1)

VATS stands for Vehicle Anti-theft System. When it will not start, is the Security light lit on the dash cluster?

Hemi2Slo

^^^ what he said. But its odd that it doesn't quit untill after the car has run long enough to warm up. After thinking about it VATS would have to be haywire for that to happen I would think. Could be a problem that has occured in closed loop. Just thinkin off hand though.

art5518

The security light on the dash does not stay on. The check engine light also doesnt stay on. Theres no codes when we plug it in to the obd scanner. Now the car won't start at all even when cold. We checked and the fuel pressure is good. There just isn't any spark. The engine cranks normal, just won't start. We checked all the fuses and they are fine. What Can cause a no spark symptom?

JRENIGAR

iTrader: (37)

crank sensor maybe???

art5518

Well after a long search for the problem, I ended finding out that the problem was a bad ignition relay. I swapped out the relay with the fan relay, and the car started right up and stayed on. I ending up buying a new relay, now the car runs great. Thanks for the help, hopefully this also helps someone else out

SSickLS1SS

i was literally just about to post ignition relay until i read that you alrdy fixed it lol.