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2.6L High Idle issue #1103980
11/12/17 07:01 AM
11/12/17 07:01 AM
8
87CanadianRaider  Offline OP
Getting the Wheeling Fever
Joined: Oct 2006
Posts: 66
Ontario, Canada
Its been a long while since I've been on this board. My '87 raider had donated its motor to my '88 montero. I've been frantically working to get it pretty much stock but functional in time to plow my driveway. Once started up however, it's sitting at a pretty high idle and not kicking down, like the 2K mark.
I've read plenty in the searches about the problem with the V6's but not so much with the 2.6L. Here's some more background. its a gen 1 SWB 2.6, auto with a/c (not hooked up)

1. the block was switched out but the manifold and carb are original to the truck and have been sitting for who knows how long
2. throttle cable adjusted and idle screws adjusted (including the DO NOT touch ones)
3. traced (the fun job) my vacuum lines checking for leaks.
4. coolant up to level and run up to temp. (have not checked the sensor yet)

To note she's running rich and appears to be dumping fuel from high idle circuit ie. above the throttle plate.

Just looking for any thoughts before I R&R the carb with one of the others I have on the bench

Thanks

Last edited by 87CanadianRaider; 11/12/17 09:16 AM.

Love the raider, hate the raider, love the raider,.....
new: '88 Montero, auto, LSD 2.6L
'87 Raider, 2.6L(#2), 5spd, Dual batt., Xterra roofrack......soon off to the wreckers
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Re: 2.6L High Idle issue [Re: 87CanadianRaider] #1103981
11/13/17 02:10 AM
11/13/17 02:10 AM
rxinhed  Offline
Trail Leader
Joined: Feb 2005
Posts: 7,098
Gerber, CA *****
ECU is toast, probably your O2 sensor as well.

When I joined this board, way back in 2005, Brendan sent me the ECU...fixed that issue right up


1988 Mighty Max turbo 2.6 service body
1980 Power Wagon W400
Sundry Mitsubishi Montero Gen 1 parts, Gen 1 and Gen 2 Max parts
Parts vehicles: 89 LS Montero 4-door, 2002 Sport AWD
For Sale: 1989 Power Ram 50 extended cab, #277 Montero
Re: 2.6L High Idle issue [Re: 87CanadianRaider] #1103982
11/15/17 01:55 AM
11/15/17 01:55 AM
8
87CanadianRaider  Offline OP
Getting the Wheeling Fever
Joined: Oct 2006
Posts: 66
Ontario, Canada
Thanks for the reply. I tried swapping ECU's from the truck to be scrapped, no luck. I did put a cleaned up new carb on and voila. I'm guessing from sitting something inside the first carb was either stuck open or cracked etc. I have a rebuild kit coming from rock auto, I'll autopsy it later. Right now it's nice to have life back in the monty again!!
Just a few electrical gremlins to excise now.....

Last edited by 87CanadianRaider; 11/15/17 02:09 AM.

Love the raider, hate the raider, love the raider,.....
new: '88 Montero, auto, LSD 2.6L
'87 Raider, 2.6L(#2), 5spd, Dual batt., Xterra roofrack......soon off to the wreckers

Moderated by  Macka, Mudraider, off-roader, PajEvo, rxinhed 

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