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03-27-08, 09:03 PM
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#1 |
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IH8MUD Junior
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Temp gauge readings off???
A problem just crept up on my 91 cruiser. The temp gauge creeps up to a little below red then drops while sitting in gear. The funny thing is that it shows no under hood symptoms of being overly hot. The fan clutch even dropped in rpm once when it showed over mid point. I don't think it is the clutch because it seems to be moving a lot of air. I am thinking it was my low budget repair of the bypass hoses with unformed hose that is somewhat kinked. Would this cause excessive heat around the temp. sensor and give false readings? I have a new radiator as well, so that is not an issue.
__________________ 91 fj80, ome low lift, Bilsteins, 180k 72 fj40, 350 chev, 3 speed 65 VW Beetle |
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03-27-08, 10:55 PM
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#2 | ||
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IH8MUD Lifer
Join Date: May 2005
Posts: 3,229
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Quote:
Quote:
Curtis |
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03-28-08, 08:00 AM
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#3 |
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IH8MUD Rookie
Join Date: Nov 2005
Posts: 71
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not sure what the prob may be, but never trust a toyota temp gauge. Apart from a big flat spot in them, may be a bit of steam build up near the sensor
__________________ "Democracy is two wolves and a lamb voting on what to have for lunch.
Liberty is a well-armed lamb contesting the vote." - Benjamin Franklin, 1759 |
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03-28-08, 09:45 AM
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#4 |
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IH8MUD Junior
Join Date: May 2007
Location: tx
Posts: 96
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that is exactly what mine did. replaced the guage and sensor just to be safe. no more problems
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03-28-08, 11:38 AM
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#5 | ||
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...
Join Date: Aug 2006
Location: Pleasant Grove UT
Posts: 1,669
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Quote:
__________________ Lane Anderson 1991 TRD FJ80, Red, 249.9k, 3FE Powa ----- Lifted, flareless, LineX, 31" BFGs, Slee stuff, Dual batts, HIRs, OBA, GPS, headlight buzzer, couple lights, clear/tinted lenses, 100 Series emblems, NLXTACY's garage opener, air horns, custom 3FE sticker __________________________________________
"If Chuck Norris drove a Land Cruiser, the resulting unstoppable force would destroy the earth." Quote:
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03-28-08, 12:01 PM
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#6 | |
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IH8MUD Lifer
Join Date: May 2005
Posts: 3,229
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I know Raven's temp gauge observations and resulting mod apply to 93-97, but I'll bet 91-92's have a pretty big dead spot in the center as well. I've never checked though... My '84 Cressida has a "real" gauge, and it's amazing how much it moves. For example, just opening the heater valve and letting that cold coolant into the system will even register slightly/temporarily. Whereas on the Cruiser, it simply warms up to the center of the gauge and then just sticks. Curtis |
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03-28-08, 12:05 PM
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#7 | ||
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...
Join Date: Aug 2006
Location: Pleasant Grove UT
Posts: 1,669
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Quote:
I've watched my temp gauge move up from the center and not overheat. It was a hot day. Also during cold mornings, it reads lower than center until I've driven around for a while. But I could be wrong. 
__________________ Lane Anderson 1991 TRD FJ80, Red, 249.9k, 3FE Powa ----- Lifted, flareless, LineX, 31" BFGs, Slee stuff, Dual batts, HIRs, OBA, GPS, headlight buzzer, couple lights, clear/tinted lenses, 100 Series emblems, NLXTACY's garage opener, air horns, custom 3FE sticker __________________________________________
"If Chuck Norris drove a Land Cruiser, the resulting unstoppable force would destroy the earth." Quote:
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