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1992 Buick Lesabre Hesitates, then stalls

Tiny
DDA9955
  • MEMBER
  • 1992 BUICK LESABRE
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 140,000 MILES
When the ouside temperature exceeds approximately 90 degrees, and my car has been driven for approximately 20 minutes or more my car will hesitate then shutdown. I can wait maybe 3 to 10 minutes then the car will run fine for a short time. The more I drive my car the more it will occur. The problem will get worse as the outside temperature increases, I live in bullhead city, AZ. So it gets pretty hot. Whatever info you can give me I would appreciate.

Thank You
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Tuesday, January 22nd, 2008 AT 7:26 AM

7 Replies

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
Is your service engine soon light on? If so get the codes read, if no codes, check the crank sensor.
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Tuesday, January 22nd, 2008 AT 8:51 AM
Tiny
DDA9955
  • MEMBER
  • 3 POSTS
My service engine light came on and I did replace my crankshaft sensor, However my car continues to hesitate under the same condition's. Maybe you can confirm some information I read on the internet. I read that it could be do to a faulty fuel pump. When the outside temperature increase's and the car's operating temperature increase's that the fuel pump overheats causing it to first hesitate, then shutdown.
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Wednesday, January 23rd, 2008 AT 5:31 AM
Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
I still don't see the code! Yes a weak fuel pump can do this but so can't a malfunctioning EGR system, or ESC circuit. Go to Autozone and rent a fuel pump pressure test gauge. Take the readings, if low pinch the return line and take that reading, get back to us with ALL info, even that code! I assume you have done the basic stuff already? The complete tune up? All filters? Looked inside the coil towers? They tend to rust, or corrode in there.
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Wednesday, January 23rd, 2008 AT 8:03 AM
Tiny
DDA9955
  • MEMBER
  • 3 POSTS
I would like to clarify my problems. My service engine light is not coming on at this time. Also because the climate is very cool, I am not experiencing any problems with my car at this time. And last when I do experiencie hesitation my service engine light does not come on. I would also like to add that my car 1992 Buick Lesabre 3.8L (Vin L) does not use a EGR valve
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Wednesday, January 23rd, 2008 AT 12:23 PM
Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
I said EGR system, not valve. All GM's of that vintage and newer have some type of exhaust gas recirculation.
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Thursday, January 24th, 2008 AT 9:38 PM
Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
Check #11!!!


https://www.2carpros.com/forum/automotive_pictures/62217_9238_1.jpg

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Thursday, January 24th, 2008 AT 9:42 PM
Tiny
CLOW339
  • MEMBER
  • 12 POSTS
You might just want to change your camshaft sensor I have buick 86 did same ch fuel pump pump relay every thing changed cam and crankshaft sensons has been fine since they work with each other
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Monday, March 21st, 2011 AT 12:14 AM

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