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sprinkles08
sprinkles08, ASE Certified Technician
Category: Buick
Satisfied Customers: 21971
Experience:  ASE Master and Advanced level certified. Factory trained with 15 years dealership experience
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I have a 1991 buick park avenue with only 25,000 miles on it

Customer Question

I have a 1991 buick park avenue with only 25,000 miles on it bought it almost 2 years ago . It's been a nightmare that no one can fix , one dealer ruined the original engine . I sued won and got a rebuild done on it . Now I'm down to a hot start problem . It's at another shop now that has a really good reputation . The mechanic tell me that it is getting to much fuel on a restart and he can't figure out why . So far every thing he has tested like 02 sensors are testing OK . This thing is driving me absolutely crazy and I now have a fortune tied up in it .
Submitted: 6 months ago.
Category: Buick
Customer: replied 6 months ago.
far crank sensor , plugs and wires , fuel injectors , check valve on fuel pump ,fuel filter , complete engine rebuild
Expert:  Juan Crespo replied 6 months ago.

Hi there.

How can I help you?

Customer: replied 6 months ago.
did you read my problem ?
Customer: replied 6 months ago.
Any one there ??????
Customer: replied 6 months ago.
Am I supposed to sit here forever ? Any one there ? HELLO !
Expert:  Juan Crespo replied 6 months ago.

Sorry, I don't think I can help you. I'll opt out so others may try.

Customer: replied 6 months ago.
lets just cancel this .
Expert:  sprinkles08 replied 6 months ago.

Hello and welcome to JustAnswer!

If the engine is receiving too much fuel on a hot restart and the injectors have been ruled out then I would first suspect an inaccurate coolant temperature sensor. If the coolant sensor is reporting a temperature that is colder than the engine really is then it will cause the engine to run rich.

How was it determined that it is receiving too much fuel?

Customer: replied 6 months ago.
My son who drives this car just informed that this actually takes place intermittently on cold starts too .
Expert:  sprinkles08 replied 6 months ago.
How was it determined the engine is receiving too much fuel?
Customer: replied 6 months ago.
I would imagine his scan tool not to mention the smell when it floods . According to the scan tool this rich situation is only at idle . Other than the starting and the idle motor runs strong .
Expert:  sprinkles08 replied 6 months ago.

The fuel injectors were replaced?

Customer: replied 6 months ago.
all the fuel injectors were replaced .
Expert:  sprinkles08 replied 6 months ago.

Can you unplug the coolant sensor and see if that makes a difference?