1991 Buick lesabre stalling

[zachcontos]

hey so i have owned a 1991 buick lesabre for a little over a year it has started stalling and running really rough sometimes it is fine though. i have gotten new spark plugs and wires i have gotten a new fuel filter and i have gotten a new ignition module. and it keeps stalling. when it stalls it sometimes starts back up other times it wont if it wont start right away ill give it gas and it will be fine but then it can stall right away.( also worth noting is that during the summer it stalled alot less,now that it is winter it is stalling alot more and not starting unless i give it gas) i need help i've already dumped about 500 dollars trying to get this fixed and nothing is working. thanks !

 

[redmondjp]

When you say that it is stalling, does it idle normally and then stall, or is the idle speed abnormally low? One thing to check is the ISC (Idle Speed Control) motor - sometimes they get sticky and cause a low idle speed/stalling condition.

Have you checked the ECM for any active or stored fault codes? This would be a good idea.

 

[zachcontos]

it honestly just depends sometimes it idle's fine then stall's other times it idle's really rough. we have checked for codes it is giving us any.