All times are UTC - 6 hours [ DST ]




Ask A Question Reply   
Author Message
 

contributions: 2
I have a 2002 Grand Prix with 60,000 miles on it. All of a sudden when starting idle races to 3500 rpm. Some wires got chewed up by mice for the coolant sensor. I replaced wires so far, and still running the same. Any suggestions?


   
Reply with quote  
* Search   
 

contributions: 2
It has the 3800 Series II motor


   
Reply with quote  
 
User avatar

contributions: 2275
Images: 37
Location: Oregon
a high idle can be caused by a vacuum leak. unmetered air entering the intake system run lean and the O2 sensor says richen up the to get the exhaust to 14.7 to 1. More air plus more fuel means more rpms.

If you can get your hands on a scanner, check your fuel trims. Is your check engine light coming on? Do you have codes that you can tell me the numbers?


   
Reply with quote  
Ask A Question Reply   

   Similar Topics   Author   Replies   Views   Most Recent 
New Articles View the first 1999 Grand Prix jerks and cuts out at 3500 RPM

in Pontiac Grand Prix

Guest

1

1600

Thu Apr 15, 2010 7:23 pm

Stan View the latest

New Articles View the first 2005 Buick 3500 Coolant Temperature Sensor Location

in Buick

SNOOT

1

2091

Sun Aug 15, 2010 11:35 pm

Brett View the latest

New Articles View the first how to get a smooth idle

in Buick

SHOOTER

2

2755

Sun Oct 02, 2016 6:12 pm

SHOOTER1 View the latest

New Articles View the first low idle when warm

in Oldsmobile

tfortom

1

997

Mon May 20, 2013 3:22 pm

ProTech View the latest

New Articles View the first 2001 Grand Am - getting hot only at idle

in Pontiac Grand Am

Sprowler

2

2825

Mon Jun 06, 2016 10:54 pm

Guest View the latest

New Articles View the first Rough Idle and Knocking

in Buick

RMax

2

2065

Fri Oct 20, 2017 8:05 pm

Lagat View the latest

New Articles View the first Rough idle - codes listed

in Buick

Digitaldad143

1

2463

Sun Jan 31, 2016 12:52 pm

carriedi View the latest


All times are UTC - 6 hours [ DST ]



Search for:
Jump to:  
Contact Us