Car stalls, now it will not start?

#1TROUBLE

MEMBER
2001 CHEVROLET MONTE CARLO
3.8L
V6
2WD
AUTOMATIC
200,000 MILES

In the beginning idle fluctuated. Then it started shutting off at times but would restart. Finally, it wouldn't restart. I did a bunch of research and ended up cleaning the idle control valve. It worked great for a few days. Then it stalled and wouldn't restart. Pulled the ICV and recleaned it. Sprayed the shit out of it with WD40 (the pentel shaft) and for a week it was perfect. Then it was back to stalling and now no start. Bought a new ICV but it still won't start. I came to realize I can't hear the fuel pump when I turn the key on, so I checked fuses, the relay and I'm about to replace the fuel pump. (If I have 12v to the pump). Any suggestions? Thanks, Charles

1 Reply

BORIS K

MECHANIC
795 POSTS

Hello,

At the fuel pump you should have 12V on pin B, grey wire, with ignition on.
Remember this 12V will only be there for about 2-3 seconds to prime the fuel system without the engine running. Otherwise, you will need to get a helper to crank the engine while you test for 12V at the grey wire

To check use a suitable test light or voltmeter.

How to use:
https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

and

https://www.2carpros.com/articles/how-to-use-a-voltmeter

See wiring diagram on image below.

Hope this helps.

Cheers, Boris

Image (Click to make bigger)