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Virtual Wrench
Virtual Wrench, Chevy Mechanic
Category: Chevy
Satisfied Customers: 14620
Experience:  35 years Master Mechanic
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Im have problem with 89 caprice classic 5.0 stalls at

Customer Question

hi im have problem with 89 caprice classic 5.0 stalls at acceleration
Submitted: 1 year ago.
Category: Chevy
Expert:  Virtual Wrench replied 1 year ago.

Hello,

Are you going to attempt to repair this yourself or just wanting to know what the possible causes are?

Customer: replied 1 year ago.
im work in the car now
Expert:  Virtual Wrench replied 1 year ago.

Thanks,

The 2 most common reasons for the hesitation are a vacuum line leaking or disconnected OR, even more common, is a dirty throttle body.

Go to the parts store and get a can of throttle body spray cleaner and clean out the inside of the throttle body opening REAL good. 99% of the time that is what causes this issue. Also look at all vacuum hoses and make sure one isnt disconnected or cracked and sucking air.

If you have any further questions just let me know.

LJ

Expert:  Virtual Wrench replied 1 year ago.

Hi,

Any further questions?

Customer: replied 1 year ago.
I'm check for cracked hoses and don't have any leak
Expert:  Virtual Wrench replied 1 year ago.

Ok, go and clean the heck out of the throttle body hole. Use a small brush and scrub off all the carbon and make sure its real clean inside and outside.

Customer: replied 1 year ago.
I'm cleaned all the throttle body and changetl all the gaskets..
Expert:  Virtual Wrench replied 1 year ago.

Hard to say then but it may be a weak injector not spraying enough fuel....

Expert:  Virtual Wrench replied 1 year ago.

Have you checked the timing yet?

It's tricky and if its not advanced enough it can cause a hesitation....

Customer: replied 1 year ago.
Hi I'm have a question. ..the injectors in the 1989 caprice classic has pulsations or paternity is stedy
Expert:  Virtual Wrench replied 1 year ago.

Have you checked the timing yet?

If you have, what is it set at?