Automotive Forums .com - the leading automotive community online! Visit IgorSushko.com and see what it's like racing in Japan
-
Google  
Web AF
See Latest Posts
Access AF from your phone - point your mobile browser to http://m.automotiveforums.com
Go Back   Automotive Forums .com Car Chat > Chevrolet > Nonspecific
Reply Show Printable Version Show Printable Version | Email this Page Email this Page | Subscription Subscribe to this Thread
 
Thread Tools
Old 07-22-2007, 06:41 AM   #1
Splendid
AF Newbie
 
Join Date: Jul 2007
Location: Starkville, Mississippi
Posts: 2
Splendid Normal reputation
Idle RPM

How can the engine idle be increased on a chevy tahoe 2001? Presently, it is approximately 500 RPM and the AC compressor will not operate at this RPM. Manually speed the RPM to approximately 800-1000 and the AC will operate.

Proper operation of the Air Conditioning system in the South is important with the high humidity and temperature we have.

Any assistance to reset the throtle control sensor would be appreciated.
Splendid is offline   Reply With Quote
Old 07-24-2007, 06:05 PM   #2
abaird
AF Regular
 
Join Date: Mar 2004
Location: lincoln, Nebraska
Posts: 450
abaird Normal reputation
Re: Idle RPM

Idle is set by the PCM and is not adjustable. If there was a problem, the SES light would be on. This is kind of long shot but I have seen this on a dodge cummins before: At idle a lack of air flow through the condensor would cause AC pressures to stay high enough that the compressor would never kick on and the complaint was that at a stoplight the air out the vents would get hot. The fix: I washed out the radiator and condensor fins because they were plugged full of leaves, bugs, dirt, etc...Don't know if this helps or not.
__________________
2009 Silverado 1500
1993 Taurus SHO
2005 Yamaha GP1300R
abaird is offline   Reply With Quote
Old 07-24-2007, 09:37 PM   #3
Splendid
AF Newbie
 
Join Date: Jul 2007
Location: Starkville, Mississippi
Posts: 2
Splendid Normal reputation
Re: Idle RPM

Quote:
Originally Posted by abaird
Idle is set by the PCM and is not adjustable. If there was a problem, the SES light would be on. This is kind of long shot but I have seen this on a dodge cummins before: At idle a lack of air flow through the condensor would cause AC pressures to stay high enough that the compressor would never kick on and the complaint was that at a stoplight the air out the vents would get hot. The fix: I washed out the radiator and condensor fins because they were plugged full of leaves, bugs, dirt, etc...Don't know if this helps or not.
Thanks for the advice; What you describe is exactly what is happening; also had a dodge cummings and it would do the same thing. No lights are on, but the AC will kick out-speed up the RPM and the AC will kick in. I will try flushing the condenser and radiator fins. This Tahoe was inherited from my wife and she never complained. She bought a new one and gave me this one. I do like the Air here in the south.
Splendid is offline   Reply With Quote
 
 
 
 
Reply

POST REPLY TO THIS THREAD


Bookmarks
Go Back   Automotive Forums .com Car Chat > Chevrolet > Nonspecific

« Previous Thread | Next Thread »
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 01:54 PM.

Google  
Web AF
Community Participation Guidelines | How to use your User Control Panel

Powered by: vBulletin | Copyright Jelsoft Enterprises Ltd.
no new posts