Stalling issue

STUCKONAPROBLEM

MEMBER
1991 BUICK PARK AVENUE
3.8L
6 CYL
FWD
AUTOMATIC
130,000 MILES

The car randomly stalls out it could be while I am driving or it could be while sitting at idle, but stalls out try to crank it over cranks but no start. Let it sit for ten minutes fires right over. Replaced the ignition module and ignition coil recently and mass air flow sensor recently. Sometimes I will get out disconnect the fuel line going to the fuel pressure regulator hook it back up and will start back up when I go to give it gas the rpm's drop to zero almost as if the fuel got cut off. Any ideas of what it could be?

3 Replies

HMAC300

MECHANIC
48,601 POSTS

Check fuel pressure with a gauge if you do not have one auto parts rent it. Check while this happens if possible it may be pump heating up and locking up. Or when it happens bang bottom of tank with closed hand or rubber mallet see if it starts if it does it is a pump.

SPONSORED LINKS

Was this

answer

helpful?

Yes

No

Sunday, April 30th, 2017 AT 8:49 AM

STUCKONAPROBLEM

MEMBER
3 POSTS

Okay, I will give it a shot also sometimes when it does start back up I will give it a little gas and rpm's will go up then drop to zero and cut out then I let sit about two minutes and sometimes starts.

Was this

answer

helpful?

Yes

No

Sunday, April 30th, 2017 AT 8:52 AM

HMAC300

MECHANIC
48,601 POSTS

If it stalls mostly at idle have you tried cleaning throttle plate on both sides and IAC hole with choke cleaner? That will cause it as well especially around throttle shafts as it goes to TPS.

Was this

answer

helpful?

Yes

No

Sunday, April 30th, 2017 AT 10:43 AM