Welcome to DSMtuners - the largest Mitsubishi Eclipse, Eagle Talon, 4G63t and 420A DSM performance resource on the web



















Login



Go Back   DSMtuners > DSM Forums > General > Newbie Forum
Welcome to DSMtuners - the largest Mitsubishi Eclipse, Eagle Talon, 4G63t and 420A DSM performance resource
You are browsing the site as a GUEST. Please login (or register) and gain the ability to post on our site and interact with other DSMers. You also get to browse the site with fewer advertisements. It is FREE to join!

Newbie Forum: Beginner/newbie/general DSM modification questions. First mods, how to run 10's when you haven't run 12's yet, any tech question that doesn't fit in another tech forum. Probationary Members must limit their tech posts to this forum and sub-forums.

Reply
 
 
LinkBack   Thread Tools
Old 10-27-2009, 01:15 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #1 (permalink)
Proven Member
 

805DSM's Avatar
Car: 3000GT VR4
Registered: Jun 2005
Tech Posts: 206
Photos: 44
Classifieds Rating: 1
Reputation: 805DSM is an unknown

2.4l spyder gs rough idle


Ok Just bought this 96 spyder gs 2.4 n/t with 99.xxx miles and all stock with NO CHECK ENGINE light on . The car was running and idleing good until afew days ago. I noticed it's running Rich at idle and the idle is lopey , drops to 450 then back up to 750rpm. I've done the whole maintanance on it an nothing has changed . Cheked for air leaks, broken/ripped vaccum lines and nothing .. THE CAR IS NON-TURBO so no I can't check for boost leaks.. And it's all stock , so what else should I check?

Thanks

Alex



____________________________
- ALEX
View photos of this member's car 

mark post as helpful recommend reputation points    Reply With Quote
Old 10-27-2009, 08:19 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #2 (permalink)
Probationary Member
 

95strandedDSmR's Avatar
Registered: Sep 2009
Tech Posts: 27
Photos: 2
Reputation: 95strandedDSmR is an unknown
I just finally fixed a huge idle issue on my turbo 2.0 which was very lopey and unstable bouncing between 200-750 etc etc almost as if it souned cammed up, also smoked black smoke as if it was running rich.

Problem ended up being the exhaust cam was out of time by 1 tooth. So it couldn't hurt to double check your timing marks on the motor.


Simpler things to check would be IAC motor,and TPS sensor make sure they are both functional. They both adjust the idle and stability of the air coming through the throttle body into the manifold.

I assume you already did the "maintence" thing like you said, plugs, wires, air filter, fuel filter, oil change etc etc.

Could also check fuel injector o-rings. Im not sure how the PCV valve effects the non turbo 2.4 when its not functioning, but on my previous cars that were non turbo, a bad pcv has caused me some idle issues. Just some ideas hope you have some luck with it bud.
View photos of this member's car 

mark post as helpful recommend reputation points    Reply With Quote
Old 10-27-2009, 09:40 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #3 (permalink)
Proven Member
 

805DSM's Avatar
Car: 3000GT VR4
Registered: Jun 2005
Tech Posts: 206
Photos: 44
Classifieds Rating: 1
Reputation: 805DSM is an unknown
Quote:
Originally Posted by 95strandedDSmR View Post
I just finally fixed a huge idle issue on my turbo 2.0 which was very lopey and unstable bouncing between 200-750 etc etc almost as if it souned cammed up, also smoked black smoke as if it was running rich.

Problem ended up being the exhaust cam was out of time by 1 tooth. So it couldn't hurt to double check your timing marks on the motor.


Simpler things to check would be IAC motor,and TPS sensor make sure they are both functional. They both adjust the idle and stability of the air coming through the throttle body into the manifold.

I assume you already did the "maintence" thing like you said, plugs, wires, air filter, fuel filter, oil change etc etc.

Could also check fuel injector o-rings. Im not sure how the PCV valve effects the non turbo 2.4 when its not functioning, but on my previous cars that were non turbo, a bad pcv has caused me some idle issues. Just some ideas hope you have some luck with it bud.

Yeah , I changed the PCV valve and did all the maintanance on it, when I got it it would idle good and normal , then hear and there it would
idle rough then it go back to normal. Now it's just idleing rough and running Rich at idle. I just need to check the timing marks


____________________________
- ALEX
View photos of this member's car 

mark post as helpful recommend reputation points    Reply With Quote
Old 05-25-2011, 11:12 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #4 (permalink)
Proven Member
 

805DSM's Avatar
Car: 3000GT VR4
Registered: Jun 2005
Tech Posts: 206
Photos: 44
Classifieds Rating: 1
Reputation: 805DSM is an unknown
Its been a while. It ended up being a bad EGR Valve, it was stuck open so it got replaced and Fixed the issue.


____________________________
- ALEX
View photos of this member's car 

mark post as helpful recommend reputation points    Reply With Quote
Reply

Bookmarks

Thread Tools

 

» Recent DSM Photo
» Current Poll
How many times have you been to the Shootout?
1 - 39.86%
167 Votes
2-5 - 41.77%
175 Votes
6-10 - 10.50%
44 Votes
11-15 - 3.10%
13 Votes
16-20 - 4.77%
20 Votes
Total Votes: 419
You may not vote on this poll.
» Online Users: 733
205 members and 528 guests
Most users ever online was 1,704, 03-17-2008 at 09:11 PM.
DSMtuners Main Sections
DSM Forums
DSM Regional Forums
DSM Builds/Journals
DSM Articles
DSM Tech Guides
DSM Upgrade Paths
DSM Parts Reviews
DSM Vendor Reviews

DSM Classifieds
DSM Parts Guides
DSM Photos
DSM Videos
DSM Timeslips
DSM Dyno Sheets
Shirts & Apparel
DSMtuners Decals

Advertising Info
Our Sponsors
Site Rules
Terms of Service
Privacy Policy
Site FAQ
About Us
Contact Us

© 2014 DSMtuners.com - All Rights Reserved

DSMtuners is not affiliated with Diamond Star Motors. The Mitsubishi Eclipse, Eagle Talon, Plymouth Laser, Mitsubishi Galant VR-4, and associated logos are trademarks of Diamond Star Motors, Mitsubishi Motors, and Chrysler Corporation. No, we do not hand out car sponsorships.

All times are GMT -7. The time now is 09:25 PM.


Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

Search Engine Optimization by vBSEO 3.6.0