reving high - Mustang Evolution

Go Back   Mustang Evolution > 4 Cylinder | V6 | Classic Mustangs || Tech and Talk > Pre-2005 V6 Mustang

Thread Tools Search this Thread
Please support our sponsors and let them know you heard about them here!
Old 02-28-2006, 11:52 AM   #1
Registered Member
red pony V6's Avatar
Join Date: Jan 2005
Region: Texas
Posts: 107
Send a message via AIM to red pony V6
reving high

my car has been reving high recently and it's really freakin' annoying. everytime i stop at a light or whatever my engine still revs up to about 1500 or 2000 rpms for a few seconds, then it comes down to normal. what is causing this?
1998 V6
true dual flows
MGW shifter
and slow as hell...
red pony V6 is offline   Reply With Quote
Sponsored Links
Old 02-28-2006, 12:49 PM   #2
Moderator Emeritus
SpectorV's Avatar
Join Date: May 2003
Region: Alabama
Posts: 26,049
Send a message via AIM to SpectorV
Re: reving high

my 01 did this, its the idle decay rate. You can potentialy fix it by cleaning the MAF sensor with electronic NO residure contact cleaner (cleans on contact no need to wipe, and you shouldnt wipe)

and replace/clean out the idle bypass valve (located on the backside by the firewall right behind the throttle body if not bolted to it. Small little thing.

After this reset the computer (or unplug the neg battery terminal while you do this)

if this doesnt work then you can have it altered with a tune.
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 02-28-2006, 01:06 PM   #3
Legacy Member
Herbstang's Avatar
Join Date: Jan 2005
Region: Florida
Posts: 2,932
Re: reving high

When I got my 04 it did the same thing, I went through all the cleaning of the MAF. Which didn't help !!! I got a SCT chip & had the idle decay rate lowered and that solved the problem

Mods-K&N CAI , True Dual Flowmaster 40, BBK Ceramic Shorties, 3.73 , 25% UDP, 3/8 Phenolic Intake Spacer ,Steeda Tri-ax, SCT Chip/Dyno Tune

"Some people are like Slinkies; useless, but fun to push down the stairs."
Herbstang is offline   Reply With Quote
Sponsored Links
Old 03-03-2006, 12:58 PM   #4
Registered User
Join Date: Mar 2006
Region: Florida
Posts: 7
Send a message via Yahoo to CreativeCustoms
Re: reving high

I never had that problem on my Mustang, but it did happen on my 97 Ranger. I cleaned the MAF sensor and reset the computer and its seemed to settle down for a while. Then it returned when I had the A/C on while I was at an idle. So I had it tuned. This seemed to fix the problem. Hope that helps.

1996 v6 3.8L --- soon to be a 302!
Help its Stock!
CreativeCustoms is offline   Reply With Quote

Lower Navigation
Go Back   Mustang Evolution > 4 Cylinder | V6 | Classic Mustangs || Tech and Talk > Pre-2005 V6 Mustang

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
High beams Rascal Pre-2005 V6 Mustang 2 03-20-2010 08:51 AM
Is this dude high? iwannagofast 1996-2004 Mustang GT 12 09-26-2009 11:34 PM
The High Came and Went bluemustang The Bar 28 03-01-2007 02:33 PM
A little high? n8r The Bar 10 02-13-2006 01:14 AM
Reving while in Park or Neutral? Ibanezplayer272 Pre-2005 V6 Mustang 12 05-31-2004 01:15 AM

» Like Us On Facebook

09:23 PM

Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd. is in no way associated with or endorsed by Ford Motor Company.