idle problem
08-17-2012, 05:21 PM
Post: #1
idle problem
Something i noticed this week and it drives me crazy. When the engine's warm it idles around 900 rpm. This is good so no problem there. But when i'm driving and i have to come to a complete stop it starts to idle at 1700rpm. So you're standing there at the red light with a high idle. It's so annoying cause it makes you look like idiot. But when i give the gaspedal a little push the rpm drops back to normal.

Could it be a vacuum leak or something? I checked the hoses and they seem to be fine.

ハチロク

[Image: AEU86 AE86 - idle problem]
Find all posts by this user
08-17-2012, 06:15 PM
Post: #2
idle problem
I had the same problem 2 or 3 years ago.
It was the dash pot (the little thing under the throttle cable)
When you release the gas pedal slowly, it stay stuck on open postion so your idle stay between 1500/2000. When you give a little tap on the gas pedal it hit the dash pot and so your idle goes back to normal.
For me a little spray of WD40 have resolved the problem.

You can also completely remove it (it's an "eco" thing after all)
Find all posts by this user
08-17-2012, 06:50 PM
Post: #3
idle problem
^^I checked the dashpot thingy 20mins ago and it goes back really slow. So i had a look on my other ae86 and there it goes back instantly. Seems to be an easy fix.

Thx for the help. Thumbs up!

ハチロク

[Image: AEU86 AE86 - idle problem]
Find all posts by this user
08-18-2012, 08:41 PM
Post: #4
idle problem
zenki Wrote:...it goes back really slow. ...it goes back instantly.

Try out a 3rd/4th opinion for really slow, instantly is NFG. Should be in between clogged & failed, like landing on a marshmallow.
Find all posts by this user
08-18-2012, 09:26 PM
Post: #5
idle problem
[Image: AEU86 AE86 - idle problem]

Here's a picture. I put some wd40 on the little thingy (no.1). And then i undid the vacuum lines and the vtv (no.2) and placed them back. I did help a bit cause i'm not getting it everytime know.

ハチロク

[Image: AEU86 AE86 - idle problem]
Find all posts by this user
08-20-2012, 01:03 PM
Post: #6
idle problem
There are more things to be checked:
1) check throttle cable for any sign of damage
2) check TB butterfly shaft for free play (replace the seals if necessary)
3) Check TPS sensor according to manual spec.
4) Check butterfly for free play (sometimes it gets loose)

Fun is not the straight line!
Find all posts by this user


Possibly Related Threads...
Thread Author Replies Views Last Post
  No idle below 2000 rpm rich running Steller Engineering 3 962 11-30-2022 02:45 PM
Last Post: RolanTHUNDER
  Engine starts/revs but no idle GenkiMotors 17 5,551 11-20-2021 04:12 AM
Last Post: GenkiMotors
  exhaust odor/idle MOT issue Ryo 7 6,475 07-15-2019 09:17 AM
Last Post: jondee86
  20v silvertop idle issue AlexFourTwenty 3 4,544 12-24-2017 03:27 AM
Last Post: AlexFourTwenty
  Silver top low idle AlexFourTwenty 7 9,199 10-16-2017 10:22 PM
Last Post: AlexFourTwenty

Forum Jump:


User(s) browsing this thread: 1 Guest(s)

Contact Us | AEU86 | Return to Top | Return to Content | Lite (Archive) Mode | RSS Syndication