Jeep Grand Cherokee Diesel running temp.

Submitted: Wednesday, Jul 01, 2009 at 14:15
ThreadID: 70302 Views:4633 Replies:5 FollowUps:2
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I have a 2003 CRD (Merc 5 cyl )runs very well but the temp gauge sits about 2 mm below the second mark (about 60') that seems a bit low to me but Jeep says it ok,
if you have one of these please let me know where yours runs at so I have some ammo for a return.
Thankyou Vic
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Reply By: Member - Vic S (VIC) - Wednesday, Jul 01, 2009 at 14:22

Wednesday, Jul 01, 2009 at 14:22
dont know why its there twice ,only entered once but was very slow ??
AnswerID: 372634

Reply By: happytravelers - Wednesday, Jul 01, 2009 at 20:22

Wednesday, Jul 01, 2009 at 20:22
I worked on one of those today, and yes the temp gauge does read low on those engines. They also take quite a long while to get up to temp.
Regards Jon
AnswerID: 372687

Follow Up By: Member - Vic S (VIC) - Wednesday, Jul 01, 2009 at 20:50

Wednesday, Jul 01, 2009 at 20:50
do you work in Hallam ?? mine reaches temp quickly but has never got past the second mark (70') and when 5 outside is onty just above the 40 so I am not looking forward to snow driving.
Thanks all for the feed back so far
Vic
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FollowupID: 639931

Reply By: Mandrake - Wednesday, Jul 01, 2009 at 20:29

Wednesday, Jul 01, 2009 at 20:29
I got the 2007 Cherokee CRD and my temp gauges sits just to the left of the centre mark - doen't vary much in running - takes 10-15 minutes to get there and sits ...
I don't even know what engine I have - 2.8 L Diesel is all I know LOL

must have a look one day - LOL

Seeya

Steve
AnswerID: 372689

Follow Up By: Member - Vic S (VIC) - Wednesday, Jul 01, 2009 at 20:52

Wednesday, Jul 01, 2009 at 20:52
to me thats where it should be to run efficiently.
Thankyou
Vic
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FollowupID: 639932

Reply By: OzTroopy - Wednesday, Jul 01, 2009 at 21:02

Wednesday, Jul 01, 2009 at 21:02
Have you owned it since new ... ?

Have you had any previous cooling maintenance done to it ... ?

It may have had too low a thermostat fitted to it ...
AnswerID: 372695

Reply By: hoffy - Wednesday, Jul 01, 2009 at 21:10

Wednesday, Jul 01, 2009 at 21:10
I have just been through the same issue with my 2.7 D Grand. It was slow to reach operating temp and running too cool, but then it was running hotter than I liked when towing our van or climbling step hills at low speed. I have a scanguage fitted so I can get pretty accuate readings. It was running around 82 degrees max, but when towing it would climb to 100-105.
I fitted a new thermostat, which is only supplied as a complete housing and thermostat unit for just over $200. It now reaches 88 degrees much quicker and doesn't seem to move more than 1 or 2 degrees either way. Haven't had a chance to hook the van on yet to try it with a load on behind.
A word of warning - if you change the thermostat be very careful with the fuel lines that run across the front of the engine, they are a very stiff type of plastic tubing that snaps very easily if too much pressure is applied to move them out of the way. I speak from experience
It may be worth getting a scangauge from Wooders to get a more accurate digital reading on your temps.
Cheers
Graeme
AnswerID: 372697

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