4.0 Water Temp Sensors
#16
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Year: 1998
Model: Cherokee
Engine: 4.0L HO
Either you're running a really low t-stat, no t-stat, your t-stat is stuck open or your temp gauge is wacked. Factory t-stat is 195 and most people say the factory gauge displays 210.
#19
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Year: 1998
Model: Cherokee
Engine: 4.0L HO
.......or why not run a brass nipple in the heater hose that exits the t-stat housing......coolant constantly flows thru that hose. Need to run a ground wire, unless the aftermarket gauge is mechanical.
Last edited by djb383; 02-07-2011 at 12:34 PM.
#20
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Year: 1998
Model: Cherokee
Engine: 4.0
I would have put it in between the heater hose tube and the water pump if I would have known before the water pump went on. I don't want to pull the water pump just to remove the tube and put in a sensor.
#21
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Year: 1998
Model: Cherokee
Engine: 4.0L HO
The hottest coolant is in the cyl head......that's the best place to get a coolant temp reading......from the coolant that's in the head or has just left the head.
U use a nipple with 3/4" hose barbs.
U use a nipple with 3/4" hose barbs.
Last edited by djb383; 02-07-2011 at 02:09 PM.
#22
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Year: 1997
Model: Cherokee
Engine: 4.0L 6Cyl, K&N, 62mm TB, Electric Fans, D Neon Injectors, Head gasket needing replaced.
I tried the same t-fitting setup to add another temp sensor for a fan. The temp reading was off by 20 deg. I verified it twice with the fitting in an out driving the XJ around for two weeks. My temp with normal driving was always 195. With the t-fitting it never got over 175. 20 deg could mean a lot when trying get out of a mud hole or over a rock.
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#23
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Year: 1996
Model: Cherokee
Engine: 4.0 I6
After reading this thread I did the exact same setup on my xj and it DOES work.
It made me very happy to see my temp gauge finally working and sitting at 210 at idle
But I noticed on my way to class in stop and go highway traffic I was running a little hot
And as you've guys said its 20 degrees off?
So am I overheating?..... I'm a bit worried now that I see it's been running this hot for the last 5 months I've had it.
96 jeep Cherokee sport with 99 engine swap
I6
Rad was replaced by PO
water pump is good
Mechanical and e fan are working
No leaks or anything else.
Drives great
It made me very happy to see my temp gauge finally working and sitting at 210 at idle
But I noticed on my way to class in stop and go highway traffic I was running a little hot
And as you've guys said its 20 degrees off?
So am I overheating?..... I'm a bit worried now that I see it's been running this hot for the last 5 months I've had it.
96 jeep Cherokee sport with 99 engine swap
I6
Rad was replaced by PO
water pump is good
Mechanical and e fan are working
No leaks or anything else.
Drives great
#24
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Year: 1996
Model: Cherokee
Engine: 4.0 I6
Originally Posted by NYsNumba1Man
After reading this thread I did the exact same setup on my xj and it DOES work.
It made me very happy to see my temp gauge finally working and sitting at 210 at idle
But I noticed on my way to class in stop and go highway traffic I was running a little hot
And as you've guys said its 20 degrees off?
So am I overheating?..... I'm a bit worried now that I see it's been running this hot for the last 5 months I've had it.
96 jeep Cherokee sport with 99 engine swap
I6
Rad was replaced by PO
water pump is good
Mechanical and e fan are working
No leaks or anything else.
Drives great
It made me very happy to see my temp gauge finally working and sitting at 210 at idle
But I noticed on my way to class in stop and go highway traffic I was running a little hot
And as you've guys said its 20 degrees off?
So am I overheating?..... I'm a bit worried now that I see it's been running this hot for the last 5 months I've had it.
96 jeep Cherokee sport with 99 engine swap
I6
Rad was replaced by PO
water pump is good
Mechanical and e fan are working
No leaks or anything else.
Drives great
#25
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that reading is when the e-fan should kick on and bring the temps back down. That is normal in stop/go traffic and at drive-thrus. If you're running over 215 constantly though there is a problem.
#26
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Year: 1996
Model: Cherokee
Engine: 4.0 HO Straight Six
After reading this thread I did the exact same setup on my xj and it DOES work.
Attachment 104883
It made me very happy to see my temp gauge finally working and sitting at 210 at idle
Attachment 104885
But I noticed on my way to class in stop and go highway traffic I was running a little hot
Attachment 104884
And as you've guys said its 20 degrees off?
So am I overheating?..... I'm a bit worried now that I see it's been running this hot for the last 5 months I've had it.
96 jeep Cherokee sport with 99 engine swap
I6
Rad was replaced by PO
water pump is good
Mechanical and e fan are working
No leaks or anything else.
Drives great
Attachment 104883
It made me very happy to see my temp gauge finally working and sitting at 210 at idle
Attachment 104885
But I noticed on my way to class in stop and go highway traffic I was running a little hot
Attachment 104884
And as you've guys said its 20 degrees off?
So am I overheating?..... I'm a bit worried now that I see it's been running this hot for the last 5 months I've had it.
96 jeep Cherokee sport with 99 engine swap
I6
Rad was replaced by PO
water pump is good
Mechanical and e fan are working
No leaks or anything else.
Drives great
#29
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Year: 1991
Model: Cherokee
Engine: 4.0 6cyl
I had the same problem after swapping a 98 zj motor to my 91 xj. I just drilled and tapped the head at the same spot the other head had the temp sender.
#30
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Year: 1988 2-door
Model: Cherokee (XJ)
Engine: 4.0
Temperature sensor
-1988 Renault 4.0 closed cooling system mounted directly to radiator-
-75% original closed cooling system '88 4.0-
-The only other comparable sensor is connected to exhaust manifold '88 4.0-
Hopefully this helps someone out cheers!
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