jseremba

I know this is a Corvette forum. But, I have had a problem that has kept my Lumina off the road for two months. I am hoping someone has an idea that can help.
Hello, I own a 1998 Lumina. Car runs great, when it runs. Lately it has a stalling problem. The car will drive fine and then stall. There are NO CODES. It may restart and idle but it will not move. If I put it in gear it stalls immediately and will not restart.
My mechanic has changed the MAF, Alternator, Battery, Fuel pump and filter.
Does anybody have any clue what this is. If it sits it will start and idle without any problem. Last time it stalled it restarted and I had it idle for twenty minutes while waiting for a tow truck. When I put it in drive shut off and would not restart.

s carter

here is a quick search result, your problem seemed familiar.
https://www.cargurus.com/Cars/Discussion-t2668_ds614627

jseremba

This is a great thread I forwarded it my mechanic. Thank you so much.

Kevova

Which engine is in it. When it won't start what is missing fuel , injector pulse, or spark?

jseremba

It has the 3.1. Frankly I do not know what is missing. I frankly think that it is the transmission. but, no codes from the trans. It just will not fire up. The engine is like it has been shut off. It really sucks. Thank you all

Kevova

Purely a guess crank sensor or chaffed jumper harness. It can fail with no codes. It's not easy to get to back side of block above pan rail. You need diagnose when it won't start. Ground wires are always a possibility. Transmission is electronic it should default to second.

jmgtp

There's a forum specifically for GM 60 degree V6 motors (60degreev6.com) which includes your 3100. May be worth your time to checkout.

jseremba

I want to thank everyone that responded to this thread. I sent the responses to my mechanic. He started looking for wires and stuff and discovered that the wiring harness to the Crankshaft position sensor was melted.
Thank you all