Drive belt 1990 xj
08-05-2014, 09:42 PM
#16
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Well I made some progress today in the heat :/
Pulled everything off and found out thermostat is a 180* made by motorad) I'm assuming it would run at 210 *now all the time with a 195* ??
I got the superstant part # 45359 195*f/90*c
There was a lot of excess RTV inside the thermostat housing too.
Why would someone put a 180 in there ?
Pulled everything off and found out thermostat is a 180* made by motorad) I'm assuming it would run at 210 *now all the time with a 195* ??
I got the superstant part # 45359 195*f/90*c
There was a lot of excess RTV inside the thermostat housing too.
Why would someone put a 180 in there ?
08-05-2014, 11:35 PM
#17
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Does anyone run a 180* therm?
Seem like it was taking along while to get up to 210* but when it did most of the time it would come back down, as long as I wasn't in Traffic.
But on my last drive going to the boat races my GPS took me for a loop and it seemed the fan was working pretty hard to keep it at 210*
(How do I tell if the thermostat is in stuck mode open or closed?) should I get any water pump for a 4.0 i6 1990 it's a mid year make 5/1990? Thanks again !
Seem like it was taking along while to get up to 210* but when it did most of the time it would come back down, as long as I wasn't in Traffic.
But on my last drive going to the boat races my GPS took me for a loop and it seemed the fan was working pretty hard to keep it at 210*
(How do I tell if the thermostat is in stuck mode open or closed?) should I get any water pump for a 4.0 i6 1990 it's a mid year make 5/1990? Thanks again !
08-06-2014, 07:01 AM
#18
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Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
Some people do. There's really no point.
Thermostat stuck open = can't get to temp.
Thermostat stuck closed = always overheat.
Thermostat stuck open = can't get to temp.
Thermostat stuck closed = always overheat.
08-06-2014, 07:30 AM
#19
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Year: 1990
Model: Comanche
Engine: 4.0
These engines are designed to run hot, and the 195° is the correct stat to use. My '90 runs at 195° even on 100+° days, unless I'm pulling my boat up a long grade, then it will go to around 210° or so and stabilize until I top the hill. It also warms to 195° within the mile on my dirt road prior to getting to the highway....about 5 minutes, regardless of outside temps.
Make sure your new water pump is a reverse rotation pump. The correct pump will have an "R" stamped on the impeller.
Make sure your new water pump is a reverse rotation pump. The correct pump will have an "R" stamped on the impeller.
Last edited by Bobolink; 08-06-2014 at 07:32 AM.
08-06-2014, 07:32 AM
#20
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Here's a possibility in this case.
Low temp thermostat or a crappy one. I only use 52028186 from the dealer anymore.
Fan clutch is bad causing the rise in temps in traffic.
Replace them both.
Low temp thermostat or a crappy one. I only use 52028186 from the dealer anymore.
Fan clutch is bad causing the rise in temps in traffic.
Replace them both.
08-06-2014, 11:32 PM
#21
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Discovered my thermostat housing bottom bolt had been broke off in the head by previous owner and instead of tapping it out drilled a hole right next to it .
This would explain the excess RTVin the housing.
I never saw it actually leaking from that housing, but I did see it leaking from the top of the WP .
Am I totally screwed now. ?
Just waiting on a WP from Napa, guess I'll find out if it was the seal on the WP once I get it all back together.
This would explain the excess RTVin the housing.
I never saw it actually leaking from that housing, but I did see it leaking from the top of the WP .
Am I totally screwed now. ?
Just waiting on a WP from Napa, guess I'll find out if it was the seal on the WP once I get it all back together.
08-07-2014, 04:06 PM
#22
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Here's a pic of the housing if someone can chime in and tell me how smart this was to drill a new hole instead of tapping it out ??
Q. Can I tap out the remainder of this bolt without risking damage to the head?
If I did that is there a way to fill the hole in the head?
Q. Can I tap out the remainder of this bolt without risking damage to the head?
If I did that is there a way to fill the hole in the head?
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