My rpms are jumping in idle - Mustang Evolution

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



Reply
 
Thread Tools Search this Thread
Please support our sponsors and let them know you heard about them here!
Old 04-04-2013, 10:44 PM   #1
Registered Member
Regular
 
andregayola's Avatar
 
Join Date: Apr 2013
Location: newark
Region: New Jersey
Posts: 1,201
My rpms are jumping in idle

the go from 1000 to 500 and sometimes even lower whats going on
__________________
1999 V6
Sonic Blue
Mods - Eibach Super sports
Cold Air Intake
K&N Air Filter
Front sway bar Bushings
andregayola is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 04-05-2013, 08:40 AM   #2
Registered Member
Regular
 
tonyd01gt's Avatar
 
Join Date: Feb 2013
Location: ayden
Region: North Carolina
Posts: 1,065
What have you checked so far on your car? When does your rpm drop? Have you check vacuum lines, IAC, TPS etc.
tonyd01gt is offline   Reply With Quote
Old 04-05-2013, 10:46 AM   #3
Registered Member
Regular
 
1slosix's Avatar
 
Join Date: Jul 2012
Region: Tennessee
Posts: 7,311
cleand the MAF, IAC, and the TB...see how your car feels after that
__________________

carving corners like a boss
1slosix is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 04-05-2013, 11:19 AM   #4
Registered Member
Regular
 
Crowned1's Avatar
 
Join Date: Oct 2012
Region: Texas
Posts: 748
Quote:
Originally Posted by 1slosix View Post
cleand the MAF, IAC, and the TB...see how your car feels after that
could you point out to me where the IAC is located? I've always been curious.
Crowned1 is offline   Reply With Quote
Old 04-05-2013, 05:27 PM   #5
Registered Member
Regular
 
Join Date: Feb 2013
Location: London
Region: Canada
Posts: 209
The IAC is behind the throttle body on the back of the upper intake manifold on the split port 3.8's.

You might need a new PCV valve and fuel filter.
Redstang19 is offline   Reply With Quote
Old 04-05-2013, 05:37 PM   #6
Registered Member
Regular
 
sam62893's Avatar
 
Join Date: Jul 2012
Location: Colton
Region: California
Posts: 2,029
Quote:
Originally Posted by 1slosix View Post
cleand the MAF, IAC, and the TB...see how your car feels after that
On the IAC, When you put it back on, DO NOT over tighten. I did and the next time I tried to take the bolts off they broke. Had to get my spare manifold and put that on lol still haven't gotten my original manifold fixed yet haha
Attached Thumbnails
Click image for larger version

Name:	image-360268598.jpg
Views:	87
Size:	444.1 KB
ID:	100661   Click image for larger version

Name:	image-3079594046.jpg
Views:	80
Size:	439.4 KB
ID:	100662  

Click image for larger version

Name:	image-1349870751.jpg
Views:	95
Size:	505.6 KB
ID:	100663  
sam62893 is offline   Reply With Quote
Old 04-05-2013, 10:31 PM   #7
Registered Member
Regular
 
1slosix's Avatar
 
Join Date: Jul 2012
Region: Tennessee
Posts: 7,311
lol you never wanna over tighten any bolt just snug them up...glad you had the spare upper, but for those that don't a stud extractor will do..then just rethread it
__________________

carving corners like a boss
1slosix is offline   Reply With Quote
Old 04-05-2013, 10:44 PM   #8
Registered Member
Regular
 
sam62893's Avatar
 
Join Date: Jul 2012
Location: Colton
Region: California
Posts: 2,029
Quote:
Originally Posted by 1slosix View Post
lol you never wanna over tighten any bolt just snug them up...glad you had the spare upper, but for those that don't a stud extractor will do..then just rethread it
Yeah I learned my lesson. Haha probably going to extract the bolts this weekend.
sam62893 is offline   Reply With Quote
Reply

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


» Like Us On Facebook



05:22 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.