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04-02-10, 04:14 PM
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#1 | | 250+ Club
Join Date: Aug 2008 Location: Franktown, CO
Posts: 329
| 22re temp sender question
I have a 1985 x-cab truck with the 22re. I noticed when you start it cold in the morning the temp gauge shows cold like it should, but about 30 seconds after starting it jumps up to about mid-range and stays there. Obviously that is too short of a time for it to really be getting warm. Once it jumps up there the temp never seems to fluctuate on the gauge even a little.
I pulled the wire off of the sending unit thats in the top of the thermostat housing and grounded it to see if the sender was bad but the gauge remained mid-range. Plugged in, unplugged, grounded does not seem to change the gauge position. Is there another temp sending unit for the gauge in a different location? Any other ideas on what could be up with this?
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1974 FJ40, Smurf Blue, Beadlocked 39's, ARB locked 4.88's F&R, Longfield axles/Birfs, SOA/C&T, H41, Orion TC, disc brakes, W8274, F.5 motor, Redline tube fenders & body armor and MetalTech stinger, sliders & full cage.
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04-03-10, 05:38 AM
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#2 | | Frame waxer
Join Date: Apr 2003 Location: Southern NH
Posts: 4,856
| Mine does the same thing, it always has. I don't trust it at all. Factory gauges look cool but they are notoriously inaccurate. My plan is to install a rack of Autometer gauges at some point.
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KB1OSF
'87 Toyota xcab SR5 - SAS'd, e-lockers, stuff (22RE/R151F/4.7's) - currently undergoing frame-off restore
'05 Lexus ES330 - Nav/ML/17's
'04 Toyota Highlander
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04-03-10, 06:11 AM
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#3 | | 250+ Club
Join Date: Aug 2008 Location: Franktown, CO
Posts: 329
| Interesting, now I know it's not unique to my truck.
Anyone? Pappy? Is there more than 1 water temp sending unit? I could be wrong but I thought I've heard there is 1 for the gauge and 1 for the EFI computer. If there is, where is it located? I've only found the 1 on top of the thermostat housing. Thanks
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1974 FJ40, Smurf Blue, Beadlocked 39's, ARB locked 4.88's F&R, Longfield axles/Birfs, SOA/C&T, H41, Orion TC, disc brakes, W8274, F.5 motor, Redline tube fenders & body armor and MetalTech stinger, sliders & full cage.
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04-03-10, 08:13 AM
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#4 | | Lifer
Join Date: Oct 2007 Location: Everett, WA
Posts: 3,260
| Both my '85 and '86 trucks do this. It bothered me enough on my '86 that I installed an Autometer gauge. 
__________________ Arnold 1997 CE Land Cruiser: 3x Locked, OME lift, 315 Duratracs, ARB w/ M12000 1996 LX450: 3x Locked, OME lift, 315 Duratracs, ARB w/ XD9000 1990 XtraCab 4x4 pickup: ARB w/ M8000 1986 Standard cab 4x4 pickup: 2x Locked, ARB w/ XD9000 1985 SR5 XtraCab 4x4 pickup: ARB w/ M8000 1995 Acura Integra: ARB w/...Just kidding (Daily Driver) | |
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04-03-10, 08:39 AM
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#5 | | 250+ Club
Join Date: Jul 2006 Location: Canada
Posts: 298
| Yes, there is two. One on the passenger/right side of the block for the temp gauge. The other is located on the front of the engine.
My truck is a 1992. Not sure if it changed over the years? | |
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04-03-10, 12:38 PM
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#6 | | Lifer
Join Date: Mar 2009 Location: the Lower Shenandoah Valley
Posts: 2,515
| the temp unit in the thermostat housing is for the computer, there is another one on the intake below, the cold start injector, where the intake bolts to the block.
i do not have a good pic of it but it is in this section. 
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well i am posting, so i must be drunk!
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04-03-10, 04:34 PM
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#7 | | 250+ Club
Join Date: Aug 2008 Location: Franktown, CO
Posts: 329
| OK, thanks for the lead. Does anyone have a better picture or description of where the gauge sending unit is?
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1974 FJ40, Smurf Blue, Beadlocked 39's, ARB locked 4.88's F&R, Longfield axles/Birfs, SOA/C&T, H41, Orion TC, disc brakes, W8274, F.5 motor, Redline tube fenders & body armor and MetalTech stinger, sliders & full cage.
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04-03-10, 06:47 PM
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#8 | | Lifer
Join Date: Mar 2009 Location: the Lower Shenandoah Valley
Posts: 2,515
| man you guys are some picky ones, lets see go out raise your hood and look on the intake it is right there in front of your face.  hope these will help you.  
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well i am posting, so i must be drunk!
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04-04-10, 08:32 AM
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#9 | | 250+ Club
Join Date: Aug 2008 Location: Franktown, CO
Posts: 329
| Thanks! With all of the crap still installed I just wasn't seeing it, now I know exactly where to go look.
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1974 FJ40, Smurf Blue, Beadlocked 39's, ARB locked 4.88's F&R, Longfield axles/Birfs, SOA/C&T, H41, Orion TC, disc brakes, W8274, F.5 motor, Redline tube fenders & body armor and MetalTech stinger, sliders & full cage.
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04-04-10, 07:30 PM
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#10 | | Lifer
Join Date: Mar 2009 Location: the Lower Shenandoah Valley
Posts: 2,515
| glad too see you can take some shit hope you get it fixed.
i put an auto-meter in mine.
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well i am posting, so i must be drunk!
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1987 Toyota Xcab Pickup
