Operating temp
Thread Starter
CF Veteran
Joined: Oct 2009
Posts: 5,390
Likes: 3
From: Chicago IL
Year: 1997
Model: Cherokee
Engine: 4.0 Straigh 6
my 95 zjs temp needle doesnt seem to be in the middle its like at a 1/4 the way hot i guess you could say. is this ok or no?
Newbie
Joined: May 2010
Posts: 1
Likes: 0
From: Enola, Pensylvainia
Year: 1990
Model: Cherokee
Engine: 4.0 6 cyl.
Thread Starter
CF Veteran
Joined: Oct 2009
Posts: 5,390
Likes: 3
From: Chicago IL
Year: 1997
Model: Cherokee
Engine: 4.0 Straigh 6
So if its running cold its a posibility that the thermostat is stuck open? I just got the jeep and I am just picking up the slack from th PO. Would it help if I said I was getting horrible gas milage even with the tune up and seafoam I used.
CF Veteran
Joined: Mar 2009
Posts: 28,068
Likes: 6
From: Tenn. and Mich.
Year: 2004
Model: Grand Cherokee
Engine: 4.7L V8
My '97 runs just under the halfway mark after warming up.
If your t-stat is stuck open you should be getting a code for that, and it will use more fuel as it thinks it's still warming up. It would be a code 17-"Engine is cold too long. Engine coolant temperature remains below normal operating temperatures during operation (check the thermostat)."
You can check for codes yourself. Here's how.>-> http://jeephorizons.com/phpbb/viewtopic.php?t=2719
Dan
If your t-stat is stuck open you should be getting a code for that, and it will use more fuel as it thinks it's still warming up. It would be a code 17-"Engine is cold too long. Engine coolant temperature remains below normal operating temperatures during operation (check the thermostat)."
You can check for codes yourself. Here's how.>-> http://jeephorizons.com/phpbb/viewtopic.php?t=2719
Dan
Thread Starter
CF Veteran
Joined: Oct 2009
Posts: 5,390
Likes: 3
From: Chicago IL
Year: 1997
Model: Cherokee
Engine: 4.0 Straigh 6
Well I bought a thermostat. I did a tune up like I said and its idling rough and seems to b runnning rich and gas milage Is like 13mpgs.
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