Continues to rev - Mustang Evolution

Go Back   Mustang Evolution > 1979-2015 Mustang GT || Tech and Talk > 1996-2004 Mustang GT



Reply
 
Thread Tools Search this Thread
Please support our sponsors and let them know you heard about them here!
Old 05-16-2011, 07:07 AM   #1
Registered Member
Regular
 
Codysmustang's Avatar
 
Join Date: Feb 2011
Region: Louisiana
Posts: 197
Continues to rev

Ok so I just got my 02 gt last week and see I got a long way ahead of me.. A very long list of issues that need to be fixed.. But when I sit at idle with ac on my car revs up and down all the time.. I never had a car do that before.. Is it so posed to?
Codysmustang is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 05-16-2011, 08:07 AM   #2
Registered Member
Regular
 
Lastoria24's Avatar
 
Join Date: Mar 2011
Region: Ohio
Posts: 128
Send a message via Skype™ to Lastoria24
Quote:
Originally Posted by Codysmustang
Ok so I just got my 02 gt last week and see I got a long way ahead of me.. A very long list of issues that need to be fixed.. But when I sit at idle with ac on my car revs up and down all the time.. I never had a car do that before.. Is it so posed to?
The idle will fluctuate, a little. Depending on when the a/c compressor is cycling off/on. Its a huge drain on the car, electrically and the engine.

Now, if its cycling a lot, meaning your rpm's are moving up and down frequently, its probably because you're low on freon (r-134a). Is the a/c blowing as cold as you would expect, or no?
Lastoria24 is offline   Reply With Quote
Old 05-16-2011, 08:11 AM   #3
Registered Member
Regular
 
Codysmustang's Avatar
 
Join Date: Feb 2011
Region: Louisiana
Posts: 197
No.. It hardly blowing any cold
Codysmustang is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 05-16-2011, 08:18 AM   #4
Registered Member
Regular
 
Lastoria24's Avatar
 
Join Date: Mar 2011
Region: Ohio
Posts: 128
Send a message via Skype™ to Lastoria24
Quote:
Originally Posted by Codysmustang
No.. It hardly blowing any cold
Then I answered your questions. : )

Take it to a shop, have them do "a/c service". Meaning, charge it full and put a/c dye in it. Then drive the car. You may have a VERY small leak, and the charge could last for years. Could be opposite though, you may be leaking so rapidly that you'll run out of freon in a few days.

If a shop tries to do it any other way, ie, telling you to replace a condenser, or line, etc, dont listen to them. Theyre more than likely trying to rip you off. Charge it, put dye in it and drive it. And go from there.

Good luck!
Lastoria24 is offline   Reply With Quote
Old 05-16-2011, 08:19 AM   #5
Moderator Emeritus
Legacy
Regular
 
SpectorV's Avatar
 
Join Date: May 2003
Region: Alabama
Posts: 26,049
Send a message via AIM to SpectorV
Re: Continues to rev

could be something like the MAF sensor or IAC (idle bypass valve) not working right or needing cleaning. Air filter as well. Thats where to start then you can get into more troublesome items. You can also scan the car for any codes.. might have some but not showing a CEL code.
__________________
2003 Cobra Vert (Redfire) #3938 of 5082 @ 05/27/2003
472rwhp/493rwtq -Modification List - Dyno Sheet
2012 Mustang 3.7L M6 (Kona Blue)
2011 Ford Edge Sport (Red Metallic)
SpectorV is offline   Reply With Quote
Old 05-16-2011, 08:21 AM   #6
Registered Member
Regular
 
Lastoria24's Avatar
 
Join Date: Mar 2011
Region: Ohio
Posts: 128
Send a message via Skype™ to Lastoria24
Quote:
Originally Posted by SpectorV
could be something like the MAF sensor or IAC (idle bypass valve) not working right or needing cleaning. Air filter as well. Thats where to start then you can get into more troublesome items. You can also scan the car for any codes.. might have some but not showing a CEL code.
If it was a MAF or IAC issue, it would throw a code. For certain.

Since the "issue" is only happening with the a/c turned on, I'd certainly start with that.
Lastoria24 is offline   Reply With Quote
Old 05-16-2011, 08:21 AM   #7
Registered Member
Regular
 
Codysmustang's Avatar
 
Join Date: Feb 2011
Region: Louisiana
Posts: 197
The car has a good number of codes but none dealing with this in particular
Codysmustang is offline   Reply With Quote
Old 05-16-2011, 08:23 AM   #8
Registered Member
Regular
 
Lastoria24's Avatar
 
Join Date: Mar 2011
Region: Ohio
Posts: 128
Send a message via Skype™ to Lastoria24
Quote:
Originally Posted by Codysmustang
The car has a good number of codes but none dealing with this in particular
...

A good number...?
Lastoria24 is offline   Reply With Quote
Old 05-16-2011, 08:29 AM   #9
Registered Member
Regular
 
Codysmustang's Avatar
 
Join Date: Feb 2011
Region: Louisiana
Posts: 197
Yeah.. Need to change all o2 sensors and some other stuff.. Then abs light is on and traction is off
Codysmustang is offline   Reply With Quote
Old 05-16-2011, 11:54 AM   #10
Registered Member
Regular
 
wereKEV's Avatar
 
Join Date: Mar 2011
Region: California
Posts: 1,863
Re: Continues to rev

sounds like you have your work cut out for you good luck.
wereKEV is offline   Reply With Quote
Old 05-16-2011, 12:33 PM   #11
A.K.A. Baby-D!
 
Join Date: Jan 2010
Region: Louisiana
Posts: 1,871
Re: Continues to rev

my RPMs fluctuate with my A/C as well. i believe that is normal when the compressor kicks on and off. but as mentioned, i would def. have the A/C services if it is jumping rapidly.
__________________
Current:
2011 V6 MCA Premium--the daily
1989 GT--the project
Previous:
2004 V6--my first pony
1988 GT--July 2010 MOTM
04TRV6 is offline   Reply With Quote
Old 05-16-2011, 01:05 PM   #12
Registered Member
Regular
 
Codysmustang's Avatar
 
Join Date: Feb 2011
Region: Louisiana
Posts: 197
It not like every single second I think it acting normal.. I cleaned the IAC and did alil better and gonna try to put freon in it shortly and see how works.. I def no for sure it not blowing as cold as should
Codysmustang is offline   Reply With Quote
Old 05-16-2011, 02:46 PM   #13
Registered Member
Regular
 
1bad01gt's Avatar
 
Join Date: May 2011
Posts: 73
Don't need traction control anyways lol!! Your abs and traction control are linked together.
1bad01gt is offline   Reply With Quote
Old 05-19-2011, 09:19 PM   #14
Registered Member
Regular
 
Codysmustang's Avatar
 
Join Date: Feb 2011
Region: Louisiana
Posts: 197
Ok got the revving problem fixed.. It needed freon for sure then me and a frnd fixed the idle screw set a small amount higher and can def feel the difference.. It blows real cold, doesn't idle up and down, and sounds better.. Not got to bypass the O2, sensors fix abs problem, put 6 injectors in, put the new control arms on, and should be looking good
Codysmustang is offline   Reply With Quote
Old 05-19-2011, 10:22 PM   #15
Registered Member
Regular
 
Lastoria24's Avatar
 
Join Date: Mar 2011
Region: Ohio
Posts: 128
Send a message via Skype™ to Lastoria24
Quote:
Originally Posted by Codysmustang
Ok got the revving problem fixed.. It needed freon for sure then me and a frnd fixed the idle screw set a small amount higher and can def feel the difference.. It blows real cold, doesn't idle up and down, and sounds better.. Not got to bypass the O2, sensors fix abs problem, put 6 injectors in, put the new control arms on, and should be looking good
Glad to hear it!

Im guessing "bypass the o2" means rear sims...? Off road pipe?
Lastoria24 is offline   Reply With Quote
Old 05-20-2011, 06:38 AM   #16
Registered Member
Regular
 
Codysmustang's Avatar
 
Join Date: Feb 2011
Region: Louisiana
Posts: 197
Well because the car has been lowered and there no stock jack to be found I have to improvise to get under the car.. But it looks like 3" pipe from front to back.. I can't tell if the person that changed the exhaust even put new O2 sensors on it or not.. But most ppl I no just bypass them to get the code to erase.. Those sensors are a pain to maintain.. Especially if lowered
Codysmustang is offline   Reply With Quote
Reply

Lower Navigation
Go Back   Mustang Evolution > 1979-2015 Mustang GT || Tech and Talk > 1996-2004 Mustang GT

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Trackbacks are Off
Pingbacks are On
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
And the War Continues Rocket 442 General Car Discussion 18 01-10-2007 04:00 PM
Guess New Curse Continues bluemustang The Bar 3 03-25-2005 06:55 PM
Well guys looks like my bad luck continues..... Brent The Bar 17 12-19-2003 01:41 AM

» Like Us On Facebook



06:53 PM


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0

MustangEvolution.com is in no way associated with or endorsed by Ford Motor Company.