Carb? Torque converter? Or?

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Rubenr1980

n00b
Sep 26, 2021
2
1
1986 Buick Regal v6 , after car is running for about 30 minutes, it starts stalling out . I will stop at a light and when I take off it dies ….. could it be the carb ? The sensors on the carb? What do you think
 

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CrammerGram69

Master Mechanic
Nov 15, 2019
324
43
SW, Michigan
I think sensors probably, have you thought to see if you're getting enough fuel? maybe remove the inlet fuel line from the carb and cycle the keys, assuming you have a electric sending unit or efi whatever its called.
 
Oct 14, 2008
8,248
113
Melville,Saskatchewan
I see someone mangled the fuel line and unhooked the charcoal canister. Always start with simple things like the fuel filter, change it. Is the check engine light on?
 

ck80

Comic Book Super Hero
Feb 18, 2014
4,547
113
Could be a lot of things. Float could be sticking in the carb and when you open throttle after the stop the af mixture is off and stalls.

Is it only with a stoplight or are there any other changes in drivability as things heat up in the engine bay?

Are there any stored ecm codes if you use the paperclip trick to try pulling the codes on the blinking idiot light?

If there were some sensor off, or something not reading properly leading the ecm to mismanage the ccc system I'd expect a code.

Have you pulled spark plugs to check for deposits? How's the tailpipe, any fouling that doesn't belong? Have you pulled the fuel filter to check for debris/bad gas?

There's so many possibilities here it's tough to know where to start. For example, we had a bad batch of gas once in one of the Cutlass Supremes I could drive it a bit while the gas circulated and trash got sucked up. After a certain number of minutes so much crud attached to the fuel sock we had fuel starvation and the car died. It sat, the crud dropped off, and we could repeat the process.
 

Rubenr1980

n00b
Thread starter
Sep 26, 2021
2
1
It runs good for about 30 minutes …….I would say at least until the trans heats up maybe 🤔
 

Clone TIE Pilot

Comic Book Super Hero
Aug 14, 2011
3,301
113
Galaxy far far away
Could be a bad accel pump, modern gas will quickly eat low quality accel pump seals.
 

ck80

Comic Book Super Hero
Feb 18, 2014
4,547
113
Could be a bad accel pump, modern gas will quickly eat low quality accel pump seals.
Just another reason why with the number of miles I drive I just put ethanol free into anything I own that was made prior to 2002 (which by default jumps back to 1987-down)
 
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