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Funky idle issue happening on my 85 4Runner #1048551 06/27/12 02:42 PM
Joined: Sep 2003
Posts: 1,686
Staceman Offline OP
Body Damage is Cool
A few weeks ago after a long trip, my truck wouldn't idle. It would just die at a stop. Removed the AFM and thoroughly tested. All tests passed. Turned out idle screw, runs normal. 3 days later, same thing. Turned out the screw again a few turns, runs fine. Now today, same thing. Gonna dig into this weekend, before the idle screw comes all the way out. I know my air-tube is leak free, so does anyone have any suggestions? Thanks.


85 4Runner - With NEW Marlin 4.7 Gears!! It's a whole new beast!
Re: Funky idle issue happening on my 85 4Runner [Re: Staceman] #1048552 06/27/12 04:52 PM
Joined: Jan 2000
Posts: 12,153
4Crawler Offline
Web Wheeler
*****
Might check the TPS idle setting:
- http://www.4crawler.com/4x4/CheapTricks/TPS/index.shtml#Troubleshooting

If that IDL-E2 contact is not closing, the idle can be off. Might be yours is right on the edge. Also, maybe the o-ring on the idle adjustment screw is shot and letting the screw move on its own.

Re: Funky idle issue happening on my 85 4Runner [Re: 4Crawler] #1048553 06/29/12 04:26 PM
Joined: Sep 2003
Posts: 1,686
Staceman Offline OP
Body Damage is Cool
Quote
Also, maybe the o-ring on the idle adjustment screw is shot and letting the screw move on its own.


I think we have a winner. After work yesterday, I adjusted it out to get it to idle properly again. This time I taped the screw to keep it in place. Working great. I'll check the o-ring this weekend. I'd suppose 27 years of hot-cold cycles on a small piece of rubber under the hood has got to give eventually. <img src="/forums/images/graemlins/kewl.gif" alt="" />


85 4Runner - With NEW Marlin 4.7 Gears!! It's a whole new beast!

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