Welcome to the all new Geo Metro Forum. We hope you enjoy your visit.You're currently viewing our forum as a guest. This means you are limited to certain areas of the board and there are features you can't use and images you can't see. Registration is simple, fast, and completely free. If you're already a member please log in to your account to access all of our features: Join our community! |
| Surging idle is back...but different this time | |
|---|---|
| Tweet Topic Started: Oct 27 2013, 01:17 PM (445 Views) | |
| CharlestonMetro | Oct 27 2013, 01:17 PM Post #1 |
|
Member
![]() ![]() ![]() ![]() ![]()
|
'93 vert LSI with stick shift.... The idle is surging again, but here is what is different this time. The surging stops when the vehicle comes to a stop. It's like there is some moving part causing the surging that goes away when the vehicle is idling still. I have checked all the vacuum lines...I can't find a leak anywhere. Any ideas? Thanks! |
![]() |
|
| sjbene123 | Oct 27 2013, 08:59 PM Post #2 |
|
Advanced Member
![]() ![]() ![]() ![]() ![]() ![]()
|
i would say tps that is usually the opposite it starts when u stop |
![]() |
|
| Fester9521 | Oct 30 2013, 11:12 AM Post #3 |
|
New Member
![]() ![]() ![]() ![]()
|
Does the engine stumble for a quick second before it returns to idle? I have had a very similar issue with mine, along with a ton of other people. Do the easy/cheap trouble shooting first. Check all of the vacuum lines and also replace the PCV valve. If it is stuck open, it causes a huge vacuum leak causing the idle to "hunt" around. A new PCV valve is about $5 at any local auto store.
Edited by Fester9521, Oct 30 2013, 11:13 AM.
|
![]() |
|
| Vkhelldog | Oct 30 2013, 11:19 AM Post #4 |
![]() ![]()
|
When you stop you have your foot on the brake, this is vacuum assisted brake, it changes the vacuum dynamic... it's either a vacuum leak or a sticky idle control valve... try plugging the tiny hole in your air filter, see if that stops it. |
![]() |
|
| Vkhelldog | Oct 30 2013, 11:26 AM Post #5 |
![]() ![]()
|
Is that year an ics or iac?' http://geometroforum.com/single/?p=632384&t=4754158 http://geometroforum.com/topic/4804867/1/ http://geometroforum.com/topic/3279581/1/ Edited by Vkhelldog, Oct 30 2013, 11:29 AM.
|
![]() |
|
| 1 user reading this topic (1 Guest and 0 Anonymous) | |
| « Previous Topic · Engine Tech & Diagnostics · Next Topic » |


Welcome to the all new Geo Metro Forum. We hope you enjoy your visit.


![]](http://z3.ifrm.com/static/1/pip_r.png)





2:16 PM Jul 11