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Unread 04-11-2008, 10:01 PM   #1
concretewake310
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Join Date: Mar 2008
Location: Beckley
Posts: 5
another Comanche on/off the road

My 1989 4x4 longbed has bin sitting in my wifes dads yard for 4 years! After a starter, fuel pump, exhaust from manifold back, and a bunch of light bulbs. O yea cant forgit the trans filter. by the way what would the best trans fluid for my automatic transmission? Valvoline atf III is what I used with some lucas. The old stuff could of bin coffee. One other question the emass maint light is on what could be setting this off? it runs like new only 100,500 miles on it.

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Unread 04-12-2008, 08:59 AM   #2
maddzz
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1989 MJ Comanche 
 
Join Date: Nov 2007
Location: Rhode Island
Posts: 277
The emission maintenance light is probally from the oxygen sensor. They are programmed to go off at the scheduled maintenance interval (around 85,000 miles). They cant be reset you can either replace the timer or just disconnect it.
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Unread 04-12-2008, 09:56 PM   #3
Pete M
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1988 MJ Comanche 
 
Join Date: Sep 2005
Location: S/E Michigan
Posts: 1,837
Yeah, that light is on a mechanical timer and goes off no matter what is going on with the truck. Most guys just disconnect it, but that depends on if you have inspections in your neck of the woods. Worse comes to worst you can likely get a replacement at the dealership.
Jeep on!
--Pete
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-88 MJ; 4.0L, ex-2wd, TJ ax15/231, 78 Ford D44 w/spool, 9" w/posi, 33" trXus MTs, custom roll-bar/bumpers/etc.
Also an 86 MJ Metric ton and 2 '90 MJs
Projects/wheelin' pics: picturetrail.com/petermontie
My email: petermontie@hotmail.com
ComancheClub.com/forums
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Unread 04-13-2008, 08:13 PM   #4
Grand Fan 4eva
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Join Date: Jun 2005
Location: Maine
Posts: 735
does this mean i can disconnect my MAINT REQRD light too? do i have to pull the dash or is there another way?
Thanks
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TORQUE... An Underrated Anti-Depressant.

'97 XJ ~5" / 33 trxus / RK 3-link / FOA 12" CO's
'00 XJ Stock DD
'68 M715
'98 5.9 Limited
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Unread 04-14-2008, 08:15 AM   #5
Pete M
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1988 MJ Comanche 
 
Join Date: Sep 2005
Location: S/E Michigan
Posts: 1,837
91+ have a real light and that likely means your O2 sensor is bad.
Jeep on!
--Pete
__________________
-88 MJ; 4.0L, ex-2wd, TJ ax15/231, 78 Ford D44 w/spool, 9" w/posi, 33" trXus MTs, custom roll-bar/bumpers/etc.
Also an 86 MJ Metric ton and 2 '90 MJs
Projects/wheelin' pics: picturetrail.com/petermontie
My email: petermontie@hotmail.com
ComancheClub.com/forums
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Unread 04-19-2008, 08:08 PM   #6
concretewake310
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Join Date: Mar 2008
Location: Beckley
Posts: 5
a new O2 sensor and taking out the light bulb so I could pass inspections. The o2 was rusted so the air could not pass threw it. 4 screws to get to the bulb very easy just put the trucks shifter all the way to the right the bulb pulls strait out.
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