what should my temp be

[thisismylife]

I have a 87 Cherokee 4.0 it is lifted 3.5” and a have 32x11.5 tires my question is what should my temp be running at it is runing at 210 and I just wont to check thanks

[wwwildman]

210 is about right if you have the 4.0.

[citizen@large]

Yup... x2. On the money @ 210*.

[dave92cherokee]

Depends on the cooling system but between about 180 and 210 is the normal range for the 4.0's.

[thisismylife]

hey thanks you all did not wont to over heat

[XJ99]

Yea thats what my 99 xj 4.0 runs at if not a little less then. Of course the ele fan kicks on at idle for 2 sec then off....then on....then off

[mmcpeck]

I run at 210 with my '87, my electric fan has never kicked on once in the 3 years I've been driving it.

I thought it was only supposed to kick on with the A/C compressor, which doesn't work in mine. I thought only transverse engines heated up enough at idle to kick the second fan on or any fan for that matter. Figured since RWD engines always have the main fan running at all times that they never heated enough to kick the electric secondary fan on, unless the A/C turned on, and that's only to cool the condenser.

[sector95]

Originally Posted by mmcpeck

I run at 210 with my '87, my electric fan has never kicked on once in the 3 years I've been driving it.

I thought it was only supposed to kick on with the A/C compressor, which doesn't work in mine. I thought only transverse engines heated up enough at idle to kick the second fan on or any fan for that matter. Figured since RWD engines always have the main fan running at all times that they never heated enough to kick the electric secondary fan on, unless the A/C turned on, and that's only to cool the condenser.

Pop the hood and take a good look at how that engine is stuffed in there. The problem with I-6 engines is they are really *long*.....the same displacement in a V-6 arrangement would only be half as long....and an I-4 or V-8 would be just slightly longer than the V-6. The radiator works by airflow and if you look into all that mess jammed up behind the rad, you'll see there ain't much opportunity for good airflow. Any of the other engine configurations would allow a lot more room behind the rad and offer better air flow....I would venture to guess the original GM-built 2.8l V-6 did not run at 210 deg.

Mike
00XJ

[mmcpeck]

Makes sense to me, I wouldn't argue it, but I wouldn't trade my 4.0 I6 running 210 for that 2.8 V6 running cooler anyday, I've never heard a good thing about that engine.

[thundergod1320]

I can't resist.... Your temperature should be 98.6 Your vehicle temp should ba as hot as possible without detonating or blowing antifreeze all over the place. An engine is a heat pump the more heat the more horsepower (as long as it isn't hot enough to delf destruct. As long as the temp is stable, and you are using good oil, the only variation should be winter/summer variations. Make sure you don't overload it, or, if you intend to, use a trans cooler and an auxilliary fan (if neceassary).

[AlohaBra]

Originally Posted by mmcpeck

Makes sense to me, I wouldn't argue it, but I wouldn't trade my 4.0 I6 running 210 for that 2.8 V6 running cooler anyday, I've never heard a good thing about that engine.

I had the 2.6 V6...what a piece of j......the 84 MY...
Glad I traded that Jeep in for the new 97 4.0L....which I still have.

[mmcpeck]

Just and update, not sure what I was thinking, but looked down today and realized what I meant to say was 180*. I had the mark on the gauge in my head and thought it was 210, but I was thinking of 180.

So I guess that big I6 isn't running all that hot after all.

[AlohaBra]

180 might be too cold. The gas mileage is going to be worse at that temp..