Hey, I have an '03 Ram 1500. I have been batteling it overheating for the last week and have tried numerous attempts at fixing it, but with no luck. Is this a common occurrence with 4.7's?

Asked by Dec 22, 2011 at 03:27 PM about the 2003 Dodge Ram 1500 SLT Quad Cab SB

Question type: Maintenance & Repair

I have flushed the radiator, replaced the tstat, fan and clutch, cleaned the radiator, and have yet to get it to stop overheating. I did notice today that the heat is not blowing when I turn it on. Has anyone run into this problem before? Any suggestions?
Thanks

5 Answers

335

get it into a garage soon i did all of that stuff and had mine blow up they said it was a weak cyl wall

3,575

Have you checked the water pump? I know this would be strange and rare but it has happened before that the impeller has either rotted away or fallen off. Would drastically reduce circulation with would cause both problems you describe.

935

Sounds like a waterpump to me as well and not all that uncommon. I have had friends just recently , a 2007 with 145k miles and a 2005 with 120k miles had to replace waterpumps. The 2007 had a drip coming from the weep hole in the pump. that is a tell tale sign. the other just failed without any hints. Good luck. Oh the 07 did the job himself just over $350. The 05 took it to the dealer and cost $780 with employee discount.

505

You did not mention the thermostat. That should be prime suspect since you say no heat in the cabin. Replace it today. If you have time replace the water pp as well. That should fix it. Best of luck.

145

My 02 Dakota ended up being a head gasket after changing all parts mentioned, including a new radiator and water pump.

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