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Offline 95 Lowbuck

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  • Posts: 140
Overheating
« on: November 24, 2005, 06:31:45 AM »
I just bought a 1995 Rio Grande with a 2.5.
I thought the motor was running quite warm by the guage, (210-225),
and it was very slow to warm up.
Also the clutch on the fan was leaking oil.
I replaced the clutch, flushed the cooling system, and replaced
the thermostat with a stock 195*.
By the way, some had drilled a bypass hole in the thermostat.
It also had a new 2 core radiatior installed before I bought it.
It now warms up quick and I can tell when the thermostat opens
and closes by the guage, but still runs at (210-225).
If it was running this hot the thermostat would never close.
Are the guages on these Jeeps normally off this much,
or do I still have a problem.
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1995 YJ RioGrand, 2.5, AX5, 231 T.C., A.A. SYE,
D30, XJ D44, Truetracs F+R, CV D.S. F+R, 4.88's
R.E. 4" STD., 33-10.50 BFG KO2's on stock rims.

jwrape

  • Guest
Re: Overheating
« Reply #1 on: November 24, 2005, 08:30:38 AM »
Quote from: "95 Lowbuck"
I just bought a 1995 Rio Grande with a 2.5.
I thought the motor was running quite warm by the guage, (210-225),
and it was very slow to warm up.
Also the clutch on the fan was leaking oil.
I replaced the clutch, flushed the cooling system, and replaced
the thermostat with a stock 195*.
By the way, some had drilled a bypass hole in the thermostat.
It also had a new 2 core radiatior installed before I bought it.
It now warms up quick and I can tell when the thermostat opens
and closes by the guage, but still runs at (210-225).
If it was running this hot the thermostat would never close.
Are the guages on these Jeeps normally off this much,
or do I still have a problem.


My 92 YJ 2.5L runs at 210 all the time. That is hot by my standards too and I know when I took my valve cover off a month ago that it looked like it had ran hot a few times by all the burnt grease on the rocker arms. I cleaned off as much as possible without getting it all down in the crankcase but I think they all run hot cause my Grandmothers Cherokee looks the exact same way under the valve cover. Hers runs at a decent temperature but still has the same burnt grease deposits.
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Offline Jeffy

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Overheating
« Reply #2 on: November 24, 2005, 12:31:15 PM »
195-210 is about normal for a AMC 2.5L & 4.0L
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Youtube Channel: https://www.youtube.com/channel/UCZNlr60GXH5OlKIFrT7P6mg
My Jeep: http://4bangerjp.com/forums/index.php?topic=2783.0
"If the motor car were invented today, there is absolutely no way that any government in the world would let normal members of the public drive one."

Offline 95 Lowbuck

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  • Posts: 140
Overheating
« Reply #3 on: November 25, 2005, 06:23:56 AM »
That sounds like a reasonable temp to me.
But I am still wonder if I should trust the guage,
or trust the 195* thermostat that I can see is working
by the guage. It looks like it does open and close.
Should I go to a 185* thermostat ?
Swap out the sending unit ?
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1995 YJ RioGrand, 2.5, AX5, 231 T.C., A.A. SYE,
D30, XJ D44, Truetracs F+R, CV D.S. F+R, 4.88's
R.E. 4" STD., 33-10.50 BFG KO2's on stock rims.

Offline Jeffy

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  • Posts: 14934
Overheating
« Reply #4 on: November 25, 2005, 11:41:39 AM »
Swapping to a 180 degree thermostat won't do anything.  Once the thermostat opens, it's open and temps are allowed to rise.  Unless it's boiling over, I would just keep my eye on it but not worry about it too much.
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Youtube Channel: https://www.youtube.com/channel/UCZNlr60GXH5OlKIFrT7P6mg
My Jeep: http://4bangerjp.com/forums/index.php?topic=2783.0
"If the motor car were invented today, there is absolutely no way that any government in the world would let normal members of the public drive one."

Offline 95 Lowbuck

  • Member
  • Posts: 140
Overheating
« Reply #5 on: December 27, 2005, 08:38:19 AM »
By the way, after trying different sending units,
the factory one gave me a accurate reading. (185-210*)
Logged
1995 YJ RioGrand, 2.5, AX5, 231 T.C., A.A. SYE,
D30, XJ D44, Truetracs F+R, CV D.S. F+R, 4.88's
R.E. 4" STD., 33-10.50 BFG KO2's on stock rims.
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