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#1103593 - 07/10/17 07:30 PM Gen 1 Throttle Body  
stevec  Offline

Getting the Wheeling Fever
Joined: Dec 2010
Posts: 73
Austin, TX
I have a second Gen1 (LWB, 3.0L, like my first) which I've got running for my son to drive. However the idle is wacky (too high, then goes hunting at various times).

We know that it runs well with a good TB, as I've taken the one off of my vehicle and put it on there. Then it idles @750, right where you want it. I've tested the IAC as well and it measures out just fine on the ohmmeter so I'm pretty sure it's just the TB.

For good measure I even have a spare TB that I pulled off of a vehicle in a local salvage yard. But no luck; get the same high/flaky idle out of that one. So a couple of questions:

1. Does anyone have a known-good TB that they're looking to part with?
2. Does anyone know of a rebuilder that can bench test and rebuild these things?

I'm not really finding any for sale other than looking at more from the salvage yards (e.g. car-part.com). I'm not sure what my chances of landing a good one from there is likely to be.

Any other suggestions as to how to track one down or fix one that I've got in hand?

Thanks everyone. Enjoy the ride; I know that I sure do in mine!

steve


90 LWB Montero, 3.0 V6 EFI SOHC, MT, original owner

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#1103625 - 08/04/17 05:01 PM Re: Gen 1 Throttle Body [Re: stevec]  
poormansporsche  Offline
Need a Spot
Joined: Oct 2016
Posts: 6
Los Angeles, Ca
I have the same issues (as do many I assume) Steve at throttlebodys.com will rebuild the 6G TBs. Pretty reasonable price. However, I don't know if it will fix your issues since I think it's more an issue of the FIAV that is problematic and there's no rebuilding that from what I can tell. That's the only reason I haven't spent the 150 bucks or whatever it was.

http://www.throttlebodys.com/DSMTBs.htm

cheers

poorman


#1103627 - 08/04/17 11:05 PM Re: Gen 1 Throttle Body [Re: stevec]  
rxinhed  Offline

Trail Leader
Joined: Feb 2005
Posts: 7,031
Gerber, CA *****
I have an 89 LS parts car that was running in May, prior to throwing a rod. I'm aware of other differences between 89 and 90/91, is this part same?


1988 Mighty Max turbo 2.6 service body
1980 Power Wagon W400
Sundry Mitsubishi Montero Gen 1 parts
Parts vehicles: 1980 D50 2wd, 1988 Mighty Max 4wd, 89 LS Montero 4-door, 2002 Sport AWD
For Sale: 1989 Power Ram 50 extended cab

#1103813 - 09/03/17 08:52 PM Re: Gen 1 Throttle Body [Re: stevec]  
off-roader  Offline

Web Wheeler
Joined: Jan 2000
Posts: 16,224
Bay Area, CA *****
Looks like rxinhed has you covered. 👍


Off Roader
96SR (3.15:1 xcase, 35's)
96SR Build Up Thread
Old web page
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Moderated by  Macka, Mudraider, off-roader, PajEvo, rxinhed 

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