Renegade Posted May 13, 2007 Posted May 13, 2007 Can I expect the temp sending unit/idiot light on my 89 to go bad(110,000 miles, 4.0)? The light comes on after a half hour of driving but when I shot a laser at the motor, I found temps ranging from 138 at the radiator outlet to 190 on the block & thermostat housing) I'd say that's about normal. BTW, makes no difference if I have the aux fan running or not(I control it manually).
jeepthing07 Posted May 13, 2007 Posted May 13, 2007 I had a problem like that on my Comanche. Replacing the sending unit fixed it.
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