thermostat change temperature variation
02-05-2015, 01:33 PM
#1
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Year: 1990
Model: Cherokee
Engine: 4.0
thermostat change temperature variation
I changed my t-stat today. it is a 92 degree one. now I have a strange temperature struggle. it goes to near 100 degrees and drops to about 70 degrees. up down up down without an end...what could this be? outside temperature is about 30 F
Last edited by Steffen84; 02-05-2015 at 01:37 PM.
02-05-2015, 02:31 PM
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Year: 1998
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Engine: 4.0L HO
R u positive the cooling system is full?......the bottle should be about 1/3 full, motor COLD. Did u test the new stat for smooth/slow open/close? Could be bad gauge electrical connection as well.
Last edited by djb383; 02-05-2015 at 02:35 PM.
02-05-2015, 03:24 PM
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Year: 1990
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I did not test the t-stat as it is a new one. how can I check the stand of the system? Renix closed system!!! I do not know how to!
02-05-2015, 04:52 PM
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Year: 1991
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Engine: 1999 4.0L
Does it change quickly or slowly? A fast change suggests a defective sender for the gauge. Its a poor design, and fails often.
02-05-2015, 06:17 PM
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here is a vid standig still. the temperature goes up and falls down this never stops??!!??
https://*******/l7nE
https://*******/l7nE
02-05-2015, 06:41 PM
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Year: 1991
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thermostat is broken, or you might have a big air bubble in the back of the head
Last edited by ehall; 02-05-2015 at 06:45 PM.
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02-06-2015, 03:40 AM
#9
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Year: 1990
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I am referring to the fluid level...
OK I found something but have another question. when the sender is out and the motor cold and not running, where do I put the fluid in?
I have to put it in higher than the sensor hole to get it up to this point, right? but there are no other connections I can use to fill it up
OK I found something but have another question. when the sender is out and the motor cold and not running, where do I put the fluid in?
I have to put it in higher than the sensor hole to get it up to this point, right? but there are no other connections I can use to fill it up
Last edited by Steffen84; 02-06-2015 at 04:04 AM.
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