Weird Overheating Symptoms
CF Veteran
Joined: Sep 2011
Posts: 4,172
Likes: 4
From: Riviera, Texas
Year: 1998 Sport
Model: Cherokee
Engine: 4.0
Yes! A bad head gasket can cause the same problem. The only way you are going to know if it's the gasket or the head is by removing the head. But the first thing you need to do is stop driving it or you will be needing to rebuild or replace the whole engine.
Either head or gasket can cause that. Problem is, a little coolant in the oil will wipe out bearings in short order. The damage may already be done. How's your oil pressure?
Thread Starter
Member
Joined: Feb 2012
Posts: 213
Likes: 0
From: Wilton, CT
Year: 1998
Model: Cherokee
Engine: 4.0 Inline 6
Oil pressure is at a about 3/4 when I'm on the throttle, drops down to a little below halfway when I'm off it
Thread Starter
Member
Joined: Feb 2012
Posts: 213
Likes: 0
From: Wilton, CT
Year: 1998
Model: Cherokee
Engine: 4.0 Inline 6
Clearwater has this head available, is what i should be looking for for an upgrade?
http://cylinder-heads.com/details.cfm?itemid=1828
http://cylinder-heads.com/details.cfm?itemid=1828
CF Veteran
Joined: Sep 2011
Posts: 4,172
Likes: 4
From: Riviera, Texas
Year: 1998 Sport
Model: Cherokee
Engine: 4.0
Clearwater has this head available, is what i should be looking for for an upgrade?
http://cylinder-heads.com/details.cfm?itemid=1828
http://cylinder-heads.com/details.cfm?itemid=1828
Thread Starter
Member
Joined: Feb 2012
Posts: 213
Likes: 0
From: Wilton, CT
Year: 1998
Model: Cherokee
Engine: 4.0 Inline 6
Thread Starter
Member
Joined: Feb 2012
Posts: 213
Likes: 0
From: Wilton, CT
Year: 1998
Model: Cherokee
Engine: 4.0 Inline 6
So the plan for right now is new head gasket, and while i have everything apart i will do a new hi flow water pump and new thermostat, as well as new headers i have wanted for a while, if i get the head off and find that it is indeed cracked, i will have to order and new one and deal with the extended downtime of being without a vehicle. for right now i definitely wont be driving the jeep anymore.
Do you guys think i am missing anything?
also, really appreciate all your guys input on this.
Do you guys think i am missing anything?
also, really appreciate all your guys input on this.
CF Veteran
Joined: Jan 2012
Posts: 3,170
Likes: 312
From: Australia
Year: 1997 (RHD)
Model: Cherokee (XJ)
Engine: 4.0 ltr
Like the positive attitude in all this mate....better than the breaking down crying when the bad news was brought about gasket/head crack.... Go for it.
Thread Starter
Member
Joined: Feb 2012
Posts: 213
Likes: 0
From: Wilton, CT
Year: 1998
Model: Cherokee
Engine: 4.0 Inline 6
My one concern is my oil pressure, at a hot idle it would sit a little under the halfway mark, is that okay?
CF Veteran
Joined: Jan 2012
Posts: 3,170
Likes: 312
From: Australia
Year: 1997 (RHD)
Model: Cherokee (XJ)
Engine: 4.0 ltr
If you have concerns about it, verify it with a mechanical gauge. Thats the only way to know what your pressure really is. Just under half way on the gauge is nothing to worry about, it means you actually have pressure 
If it would be getting too low, I'd clean the passage where the oil pressure sending unit sits and verify pressures on the next oil change. Different filters can have a significant effect on your pressure reading too, fyi.
But for now I would not worry.

If it would be getting too low, I'd clean the passage where the oil pressure sending unit sits and verify pressures on the next oil change. Different filters can have a significant effect on your pressure reading too, fyi.
But for now I would not worry.
Last edited by Roler; Feb 11, 2014 at 03:32 AM.
CF Veteran
Joined: Mar 2010
Posts: 47,923
Likes: 38
From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors


