98 Monte Carlo starting problem.

74laguna wrote:if the key has a chip in it you need to check the lock cyl. wires for the theft system

I have a brand new key. Next "fix" is to disconnect the anti theft module and bypass it.

This is the reason I don't screw with newer cars anymore. I spent over $2k both working on it myself & at the dealership trying to find a simple $50 problem on the Taurus. I ended up finding & repairing the problem, not the dealership.

the key is not the LOCK CYL. will

I know, I'm not STUPID! When the problem first occurred, one suggestion was to get a new key made, because maybe it wasn't making good contact due to being worn out, for the old one WAS worn out, and even bent. And besides...that doesn't sound like something that would happen only in heat anyway.

Next time it happens, I'll try Corey's vapor lock suggestion.

Well, after a lot of diagnosing, it was narrowed down to the anti theft module. Picked up two new ones at the salvage yard on Monday for $5 a pop, and put one on that day. So far so good...