quick question
04-20-2012, 05:32 PM
#1
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Year: 1989
Model: Cherokee
Engine: 4.0
How can I tell if my temp. Gauge giving a false reading, the enginge seems hotter than what it says
Sorry for the bad grammar
Sorry for the bad grammar
Last edited by my89xj; 04-20-2012 at 05:41 PM.
04-20-2012, 05:50 PM
#2
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Year: 1998
Model: Cherokee
Engine: 4.0L HO
One of those point-n-shoot infrared temp guns is as handy as a pocket on a shirt....for all kinds of things. Point it mainly at the t-stat cover.....now days they're cheap too.
04-20-2012, 05:52 PM
#3
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Year: 1989
Model: Cherokee
Engine: 4.0
Alright thanks, and while your hear, how much should the coolant resivor be filled? I can't find a clear indication
04-20-2012, 05:59 PM
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Year: 1998
Model: Cherokee
Engine: 4.0L HO
I believe your XJ has the pressurized bottle and would think/suggest about 1/2 full of coolant. Keep tabs on it both when motor is hot and cold. I would think it should have at least some coolant in it even when the motor is cold.
04-20-2012, 11:16 PM
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Year: 1989
Model: Cherokee
Engine: 4.0L 242ci I6
Fill it halfway and monitor it over a day. Keep filling (NOT WHILE HOT!) if it goes down. I keep mine just under halfway so I know there's enough, but not too much. Also, be careful with the cap. They tend to strip very easily and leak. Just snug it on there. Buy a few bottles and caps for the years to come. About $20 each and they only last for a few years, so stock up. I think we went through about 4 on mine since we got it in 92. It's been in the family a while. I grew up in it, and now I get to drive it 
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