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Unread 08-05-2011, 01:34 PM   #1
willy45015
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is this normal

Ok with a/c on my temp creep over 210 almost to the firstis this normal line

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Unread 08-05-2011, 01:46 PM   #2
4Tom
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creep over 210 to what temp. ?

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Unread 08-05-2011, 01:55 PM   #3
tbone1004
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we're in the middle of a nasty hot summer, you're adding strain to the engine with the AC on. If you're doing around town driving I wouldn't say it's abnormal. If you're on the highway I'd be a little concerned. I wouldn't worry too much about it if it's only up a few degrees
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Unread 08-05-2011, 06:37 PM   #4
willy45015
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Like it in between 210 an the next line on gauge an yes it more in the city where I notice it but I always heard to not over heat the 4.7 cuz there pop even by little
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Unread 08-05-2011, 06:40 PM   #5
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When mine started to creep up over normal I found that I had a bad electric fan.
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Unread 08-05-2011, 06:43 PM   #6
willy45015
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I'll have to check it out tomorrow after work didn't even think about that electric fan
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Unread 08-05-2011, 06:47 PM   #7
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Mine was still spinning but not as fast as it should have been. My brushes were worn and a grove had got worn into the motor commutator (sp). Of course I had about 200,000 miles on it.
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Unread 08-06-2011, 08:05 AM   #8
4Tom
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Quote:
Originally Posted by willy45015
Like it in between 210 an the next line on gauge an yes it more in the city where I notice it but I always heard to not over heat the 4.7 cuz there pop even by little
It should sit at 210 and at idle or slow driving when temp rises the e fan switches on. The e fan also switches on when using AC.

It sound like you e fan isn't turning on. Most common fault is e fan relay.

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Unread 08-06-2011, 08:15 AM   #9
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Don't 2000 WJs have a clutch fan?
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Unread 08-06-2011, 09:31 AM   #10
narnwv
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Quote:
Originally Posted by shepd View Post
Don't 2000 WJs have a clutch fan?
99-2000 4.7s have a mechanical clutch fan AND an electric fan. In 2001 both fans were replaced with the hydraulic fan that's driven from the power steering pump.
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