2003 1500 4.7 running hot.......
#2323752
06/19/17 06:50 PM
06/19/17 06:50 PM
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Joined: May 2014
Posts: 61 wheeling, west virginia
wvjohn
OP
member
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OP
member
Joined: May 2014
Posts: 61
wheeling, west virginia
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2003 1500 4x4 4.7 going up long hills , temp gauge starts creeping up.replaced radiator, was original,195 thermostat,auto zone water pump, plastic impeller,it is shaped like 2 round dics with vanes in middle.still runs hot on a pull. any help is appreciated.not losing any fluid, bled system, correct anti freeze, new mopar heavy duty clutch fan bottom hose not collapsing.
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Re: 2003 1500 4.7 running hot.......
[Re: wvjohn]
#2323828
06/19/17 09:17 PM
06/19/17 09:17 PM
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Joined: Jan 2005
Posts: 12,419 Kalispell Mt.
HotRodDave
I Live Here
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I Live Here
Joined: Jan 2005
Posts: 12,419
Kalispell Mt.
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probably head gaskets, a small leak might not put gasses in the coolant till its under a heavy load.
I am not causing global warming, I am just trying to hold off a impending Ice Age!
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Re: 2003 1500 4.7 running hot.......
[Re: wvjohn]
#2325258
06/22/17 03:01 PM
06/22/17 03:01 PM
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Joined: Jan 2005
Posts: 12,419 Kalispell Mt.
HotRodDave
I Live Here
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I Live Here
Joined: Jan 2005
Posts: 12,419
Kalispell Mt.
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We have worked on tons of them in my shop, 2 are in here right now for head gaskets and cracked heads. I don't stock much for new parts here except oil, oil filters and 4.7 head gaskets and timing chain sets. The symptoms are exactly what you describe and typically begin after overheating because of a faulty water pump or radiator. The 4.7 can not stand to be overheated at all, pretty much instant failure of a head gasket when the gauge goes over 1/2 way and 3/4 pretty much means cracked heads.
I am not causing global warming, I am just trying to hold off a impending Ice Age!
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Re: 2003 1500 4.7 running hot.......
[Re: wvjohn]
#2326148
06/24/17 04:43 PM
06/24/17 04:43 PM
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Joined: Jan 2005
Posts: 12,419 Kalispell Mt.
HotRodDave
I Live Here
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I Live Here
Joined: Jan 2005
Posts: 12,419
Kalispell Mt.
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Even easier and more concise is just do a chemical test of the coolant for exhaust gasses, napa carries the tester and it takes about 30 seconds. I buy a lot of those 4.7 rigs and never buy one without testing it and most of em are blown head gaskets or cracked heads.
I am not causing global warming, I am just trying to hold off a impending Ice Age!
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Re: 2003 1500 4.7 running hot.......
[Re: wvjohn]
#2336522
07/13/17 03:24 PM
07/13/17 03:24 PM
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Joined: Jun 2008
Posts: 1,822 Colorado
denfireguy
top fuel
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top fuel
Joined: Jun 2008
Posts: 1,822
Colorado
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HotRodDave is the expert on here for the 4.7. He will also tell you that it is very easy to warp the heads on the 4.7 and if you have to replace a head gasket, replace the timing chain set and adjusters. Craig
2014 Ram 1500 Laramie, 73 Cuda Previous mopars: 62 Valiant, 65 Fury III, 68 Fury III, 72 Satellite, 74 Satellite, 89 Acclaim, 98 Caravan, 2003 Durango Only previous Non-Mopar: Schwinn Tornado
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