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Ask Dave Nova Your Own Question
Dave Nova
Dave Nova, Buick Technician
Category: Buick
Satisfied Customers: 1808
Experience:  ASE Master Certification. GM World Class Certification
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High idle at startup and continuing 2500-3000 rpm unplug TPS

Customer Question

high idle at startup and continuing 2500-3000 rpm unplug TPS and it still idles at about 900 rpm even warmed up . suddenly started not shifting into overdrive yesterday.
JA: How old is the transmission? Have you noticed any leaking?
Customer: Hd rebuilt by AAmco about 4 years ago maybe 50,000 miles on it. no leakes good color
JA: Are you fixing your 900 yourself? What have you tried so far?
Customer: my 900?
JA: Anything else you want the mechanic to know before I connect you?
Customer: whats a 900
Submitted: 9 months ago.
Category: Buick
Expert:  Jerry replied 9 months ago.

Hello and welcome. My name is ***** ***** you for visiting the site, I am reviewing your question and will reply shortly, thanks.

Expert:  Jerry replied 9 months ago.

Did my assistant remember to ask you the year make and model? Engine size?

Customer: replied 9 months ago.
1994 Buick Park Ave base model not ultra 3800
Expert:  Jerry replied 9 months ago.

I see, thanks. 2500 is rather high, are there any vacuum leaks that you can see?

Do you know what the TPS signal voltage is?