Jeep Cherokee - overheating, and what does the red "EXH" light mean?

Submitted: Tuesday, Oct 28, 2003 at 08:38
ThreadID: 8137 Views:2552 Replies:4 FollowUps:2
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Hi all, I have a friend with a Jeep Cherokee (about a 96 model, i think) with the 4.0 litre injected engine, auto. It has a red light down on the dash marked "EXH" which is now permanently on. Can anyone tell me what it means? I should add that this is an American model, LHD (we are in Vanuatu). It has also started overheating - he says the light came on about the same time. I've checked for water in the oil, funny coloured exhaust, cream in the oil cap, but no signs there - but the overflow bottle regularly overflows. This also confuses me, as it doesn't seem to have a separate radiator cap, everything seems to actually circulate through the expansion bottle. How does that work with pressure - is that bottle actually pressurised, and if so where is it supposed to vent, as I can't see anything anywhere that looks like a means of pressure relief?

Thanks, Tim Z
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Reply By: Member - Toonfish - Tuesday, Oct 28, 2003 at 10:14

Tuesday, Oct 28, 2003 at 10:14
does it stand for exhaust?1999 NISSAN NAVARA DUALCAB
DIESEL 3.2 & SPRINGY CARLTON TOY
2 awestruck kids (dads driving!)
AnswerID: 35360

Follow Up By: Member - Cocka - Tuesday, Oct 28, 2003 at 11:07

Tuesday, Oct 28, 2003 at 11:07
Toonfish Where are we going with all these pics
What's the connection between sushi and 4wd'ing ??

I got the impression this is a 4wd forum, now we get happy pics of the kids, motor bikes, Jap food (love it) et al. I'm getting confused and distracted from my mission. Carpe Diem
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FollowupID: 25556

Reply By: Member - Toonfish - Tuesday, Oct 28, 2003 at 11:17

Tuesday, Oct 28, 2003 at 11:17
its actually nemo and me being a chef it is my avatar of course .
my weird sense (or lack of )humour.
hope you find some help re your jeep
oh yeah where are we headed with pics and stuff?

hopefully happiness in whatever we do (4 me food and outdoors)1999 NISSAN NAVARA DUALCAB
DIESEL 3.2 & SPRINGY CARLTON TOY
2 awestruck kids (dads driving!)
AnswerID: 35371

Reply By: jeepy - Tuesday, Oct 28, 2003 at 12:26

Tuesday, Oct 28, 2003 at 12:26
Head over to http://www.ausjeepoffroad.com/forum/ and they will sort you out

Cheers
Jeepy
AnswerID: 35384

Follow Up By: zigglemeister - Tuesday, Oct 28, 2003 at 15:26

Tuesday, Oct 28, 2003 at 15:26
Thanks jeepy, I'll give that a try.
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FollowupID: 25582

Reply By: Nav 80 - Tuesday, Oct 28, 2003 at 15:40

Tuesday, Oct 28, 2003 at 15:40
Dont know what the light indicates but if its overheating and blowing water out of the bottle he has a compression leak into the cooling system,ie. hot combustion gases entering the cooling system from either a blown head gasket or corroded or cracked head.
AnswerID: 35415

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