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  #1  
Old 09-28-2009, 12:12 AM
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1970chevy 1970chevy is offline
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Default Engine runs hot

I bought my 2005 dodge ram in october of 2008. I have always noticed that it runs a little hot when in hot weather and/ driving uphil (especially with the air conditioner running). I understand that these are things that will make any engine run a little hotter. My temperature gauge will be in the 3/4 and above range if there any sort of incline, warm weather, or air conditioning is on. many times it has been above 3/4 to overheating. It has only gotten to max temperature one time and I had a full load and was traveling up an 8% incline.

Is this normal behavior for a dodge ram 4.7 L? I am tired of always turning off my air conditioning and stressing on long trips weather or not my truck is going to overheat!

I have a brand new water pump, fan clutch, belts, fresh 50/50 anti-freeze/water mixture, my hoses are in great condition, and i had a pressure test done. Everthing that I just listed was done two weeks ago. there is no change in the temperature of my engine since maintenence was performed.

So is this normal and I just need to stop worrying?
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Old 09-28-2009, 12:28 AM
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Well hello and welcome to RamForumZ, since I see this is your first post (might wanna wander over to the Newbie Checkin section so you get welcomed proper), but in my experience, Dodge engines tend to run on the cooler side of the gauge. Sounds like the engine cooling system has had the required maintenance, but how about the A/C? Perhaps someone with more A/C experience can chime in on this, but I know when my A/C went out in my Jeep, it caused the car to run hot, too. Has it been charged lately? Hope you enjoy the board!

- Cajun
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Old 09-28-2009, 12:30 AM
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Well, you can change the thermostat and that should drop it a bit. Only costs about 10 dollars and it's a real simple installation, honestly about 10-15 minutes.

Don't have a 4.7 myself, but doesn't sound quite normal. Maybe the sensor is off?
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Old 09-28-2009, 12:32 AM
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Quote:
Originally Posted by 98sst View Post
Well, you can change the thermostat and that should drop it a bit. Only costs about 10 dollars and it's a real simple installation, honestly about 10-15 minutes.

Don't have a 4.7 myself, but doesn't sound quite normal. Maybe the sensor is off?
Yeah, good thought, 98sst, or engine coolant temperature sensor???

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Old 09-28-2009, 12:33 AM
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change the thermostat i gaurantee you the seal around it is blown apart. And make sure all the air is out of it these things can be a nightmare if you dont have them air lifted
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Old 09-28-2009, 12:44 AM
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I forgot to add that the thermostat was also changed two weeks ago. I thought the same thing too. how do I check if the sensor is working properly?
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Old 09-28-2009, 12:48 AM
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Did some research and it says that the problem can be caused by a poor ground at the PCM, which the ECT is depending on for proper operation. If the PCM ground is OK, check sensor resistance with a digital ohmmeter.
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Old 09-28-2009, 02:10 AM
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Thanks a lot for the help. Im gunna check this out and post back
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Old 09-28-2009, 10:08 AM
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May be a bad guage , sender , bad radiator or missing fan shroud . Do you have a mechanical fan or electric fan . If you have an electric fan could even be a bad cooling fan temp sensor , relay , or fan unit . You can also check and make sure you don't have any debris in front of the radiator core impeading air flow through the core for heat transfer . Could even have debris in the core or a defective (clogged) core . You can pull the radiator and take it to a reputable radiator shop and have them evaluate it . Just checked Rock Auto and a new radiator is $123.00 . Like Cajun said make sure you go to the newbie section and introduce yourself . Let us know how you make out . Talk to ya soon . Tom
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