idelling problem

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idelling problem #339004 10/29/03 04:20 AM

Joined: Feb 2003

Posts: 91

Roanoke , VA

4runnermedic Offline

Getting the Wheeling Fever

85 4runner w/ 22re and fresh rebuild. My truck starts and runs fine but after driving for a few minutes when i push the clutch to stop it idels up and down for 1 -2 minutes before normalizing. it does not stall or race. it just seems like it cant find where it wants to be. I do not have a tachometer but do have an oil presure guage and it jumps from 20 - 40 and then finaly holds at about 35. any ideas?....Thanks B.Johnson

Re: idelling problem [Re: 4runnermedic] #339005 10/29/03 05:38 PM

Joined: Nov 2002

Posts: 130

People's Republic of Boulder

mtnfreak

Wheeler

Are you pressing the brake while this is happening? If so, your idle speed is prbably too high. Turn it down, or look for air/vacuum leaks if it won't adjust properly. Check the cold-start injector to be sure it's cutting off when it should.

'89 4Runner, V6, Auto, 180K, Some stuff's stock, some isn't.

Re: idleing problem [Re: mtnfreak] #339006 10/30/03 04:54 AM

Anonymous

Unregistered

Mine did the same thing twice today. Had not done that before. I also have a fresh rebuild. Lasted 20 -30 secs. Ill let you know if I come across something. Let me know if you find something.

Re: idelling problem [Re: 4runnermedic] #339007 10/30/03 06:02 AM

Joined: Jan 2000

Posts: 12,153

N. California. USA

4Crawler

Web Wheeler

I would check that the Throttle Pos...s what tells the ECU to idle the engine. Also, check that the dashpot filter is not clogged. If so, the dashpot will close the throttle too slow and you'll get symptoms like that.

r.c.brown@ieee.org
TruckEditor@tlca.org
Project: 4Crawler
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Re: idelling problem [Re: 4Crawler] #339008 11/01/03 03:23 AM

Joined: Feb 2003

Posts: 91

Roanoke , VA

4runnermedic Offline

Getting the Wheeling Fever

where is the dashpot filter?

Re: idelling problem [Re: 4runnermedic] #339009 11/01/03 03:33 AM

Joined: Mar 2003

Posts: 433

coastal nc

solarcrew

Mudrunner

<img src="/forums/images/graemlins/notooth.gif" alt="" />It's a small round thing that hangs from a vacuum hose by the throttle stop plate.My 87 didn't have one,but the 90 throttle body and plenum I swapped in did. <img src="/forums/images/graemlins/kewl.gif" alt="" />

87'4runner-22re,5spd

Re: idelling problem [Re: 4runnermedic] #339010 11/01/03 03:34 AM

Joined: Feb 2003

Posts: 91

Roanoke , VA

4runnermedic Offline

Getting the Wheeling Fever

also where is the cold start injector?

Re: idelling problem [Re: 4runnermedic] #339011 11/01/03 06:29 AM

Joined: Mar 2003

Posts: 433

coastal nc

solarcrew

Mudrunner

<img src="/forums/images/graemlins/lol.gif" alt="" />If your facing the front of the motor,the cold start injector is on the right side of the plenum. <img src="/forums/images/graemlins/cheers.gif" alt="" />

87'4runner-22re,5spd

Re: idelling problem [Re: 4runnermedic] #339012 11/01/03 06:30 AM

Joined: Jan 2000

Posts: 12,153

N. California. USA

4Crawler

Web Wheeler

Quote

also where is the cold start injector?

Top of the intake plenum, look for the hard fuel line running to it, just above the white plastic idle-up adjusting screw in the picture below:

[Linked Image]

r.c.brown@ieee.org
TruckEditor@tlca.org
Project: 4Crawler
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