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Ask GM Tech (Cam) Your Own Question
GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
Satisfied Customers: 15181
Experience:  GM Grand Master Technician 2007. 14 years experience.
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Chevrolet lumina: I have a 1995 chevy lumina van. When I start

Customer Question

I have a 1995 chevy lumina van. When I start it the engine revs really high and then comes bake to normal. What could be causing this because it never did this before.
Submitted: 6 months ago.
Category: Chevy
Expert:  Gary replied 6 months ago.
is it only when starting it cold ?i mean if its hot and you shut it off and start it back up is it fine then ?is the check engine light on ?do you know if there are any codes set in the computer ?
Customer: replied 6 months ago.
it does it every time I start it. the check engine light has not come on.
Customer: replied 6 months ago.
(Posted by JustAnswer at customer's request) Hello. I would like to request the following Expert Service(s) from you: Live Phone Call. Let me know if you need more information, or send me the service offer(s) so we can proceed.
Expert:  Gary replied 6 months ago.
has it been checked for codes yet ?
Customer: replied 6 months ago.
yes
Expert:  Gary replied 6 months ago.
most of these engines that do this with no codes set usually has a vacuum leakcan you be 100 % sure there are NO vacuum leaks at all ? including the throttle body gaskets ?