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Discussion Starter #1 (Edited)
Can we make this a sticky?

Idle Surge Check List

Here is a site for everyone to check when they think there idle is jumpy/surging.

Try the Checklist from cheapest up.

http://www.myzero.com/engine/surge.html

ALSO.....I have heard that if you capacitors in your ECU start going bad they can cause idle surge.
 

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Would be a good idea but iv done all those but one and i still have the problem after this ill be an expert at idle surge and ill write up a faq for everyone.. we can make that a sticky or somthing.
 

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i have a similar problem, my rpm's keep going up and down between 1200 and 2000 rpm's , but its kinda tricky, if i start the car and drive off right away and stop at a light then my rpm's are never steady, unless i start the car and wait 7-8 minutes for it to worm up then my idle stays steady at about 1000 rpm, so if i want my car not to act up i always have to wait a while before i drive off which is anoying especially when its a hot day. do you guys think i can still follow these procedures to fix my problem.
thanks. :dunno:
 

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Thanks, i really needed this site.

I have one quick question, can of these cause my car to die when i shift? Say for example my TB plate getting stuck or my biss screw is too lose?

THe other day my car started to idle at 700RPM and it usually idles a little over 1000. I figured it was my dump tube "S" shaped pipe piece came off again, but it was still on. Now when i shift my car wants to die, like the RMPs drop too fast for the car to catch itself and come really close to dieing (less than 100 RPM) or just dies.

This gives me a good chance to clean my TB, block off the EGR valve and replace my O ring on my BISS.
 

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OMG THIS IS GREAT!

I just registered here b/c i have mad dsm probs...and the first thing i see is this sticky thread for my exact [email protected]! this is madness!!!!...I haven't even read the thingy yet i was so excited!! happy days! :D
 

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Discussion Starter #8
OMG THIS IS GREAT!
I feel so great that i could make a "sticky" thread for everyone.
You like me.....you really, really like me!! (name that movie)


I do hope this thread helps everyone though....seriously.
 

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On my galant Vr-4, we used the Apexi S-afc to fix the idle surge. Leaned it out, at low throttle. Now idles about 800-900 rpm.

If anybody needs the settings, email me.

Thanks
Justin
MastaMinds
 

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is idle surge really just when the car is sitting there in park? my cars rpms go up and down when I am cruising at around 10-20mph but it idles fine.
 

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I'm having the high idle surge sometimes (1100-1500 jumps back and forth) then sometimes it works great, and sometimes it idles at like 400. I am so lost...Is it most likely my ECU?
 

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Discussion Starter #12
Click the link in the first post.
 

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hay guys, the link to the VFAQ is nice, because for those of you who are new to DSMs and their many problems, this may fix one. I would suggest highly to attempt to read the link to terry's little guide as well, because you'll know whats going on better.

DONT try to adjust the biss on a 2g, to do it right im pretty sure you'll need a 'SCANTOOL' to hold the idle arms still while adjusting.

if you have a turbo, LOOK for boost leaks, and if you can, pressurize the intake to hear the hiiden leaks that can kill your boost and make idle rough.

If you add a high flowing intake and ditch the air box, that will usally lower your idle, and may cause stalling.

After i added my K&N, my revs drop low after reving her up, and almost stall, during startup as well, and when i back up i stall some times. Its most likly cause my engine is beging flooded with extra gas because i have a small leak in my intake and the new filter. I also get a bit of surging sometimes too!

Don't forget basic stuff like plugs and wires, they can cure some of the little dumb things in DSMs too. happy hunting!:D
 

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I had terrible surge ever since I bought my car in march. I replaced just about everything under the hood including a new turbo. What it ended up being was that my throttle body was bad. So I got a new new one from a local shop and now my car runs great. My car would jerk violently when I was cruising and do all sorts or wierd things. Now they are all gone because of the new TB.
 

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ERRATIC IDLE, HESITATION, STALLING

1995 Eagle Talon ESi, 118,500 - no modifications. Original owner.
THREE PROBLEMS: ERRATIC IDLE, HESITATION, STALLING. Intermittently while stopped, vehicle vibrates/starts to stall and stops - "check engine light" comes on. Car restarts immediately and will will run O.K. (light goes out). Intermittently while driving down road "check engine light" comes on and engine hestiates - will clear up or stall. Stalls intermittently while pulling away from complete stop and power steering fails (light comes on). Vehicle always restarts immediately and light goes out. Last time driven, car began abruptly bucking at 40 mph for a few seconds then resumed normal operation however when stopped in "park" again began to erratically idle (needle on rpm guage was zooming up and down). Upon turning off ignition and immediately restarting, car idled normally (about 900 rpms). The diagnostic trouble code has never set a code in the computer. I have replaced spark plugs, valve cover gasket, idle air control, timing belt, water pump, throttle body, and cleaned fuel injection. My mechanic and a local Dodge dealer are clueless since there is no DTC. I hope someone can help me as Daimler Chrysler has not responded to my inquiries and I am trying to sell this car. Thanks.
 

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Discussion Starter #18
1995 Eagle Talon ESi, 118,500 - no modifications. Original owner.
You may want to try a neon forum on the 420a motor. Here we know mostly about the 4g63
 

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What about the plug wires (that cause alot of problems for me, so simple)? does the 420a use a distributer (i idin't think so but...)? Have you tried cleaning the throttle body? maybe its an intake leak ? anything you can remember doing befoer the problem poped up?
 

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1995 Eagle Talon Esi

verserv said:


You may want to try a neon forum on the 420a motor. Here we know mostly about the 4g63
Thanks. I wasn't aware I was in the wrong forum. Could you explain the difference between the types of motors you mentioned?
 
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