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  #1  
Old 07-11-2018, 07:52 AM
abear abear is offline
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Default Overheating with Full Coolant

Hello All!

Been quite some time since I have been on this forum, but I have recently developed an overheating issue with my truck that has me stumped.
A little history on the motor: I have a 2000 3.0 V6. I originally had issues with over heating due to a leaking freeze plug and a bad water pump which resulted in a blown head in December 2016. At that point I had a new motor, water pump, radiator, thermostat, and hoses replaced.
I have only put roughly 17k miles on it and have had no issues until recently when I noticed the truck will start to overheat while driving in traffic or in the city. I live and work on the outskirts of town, so I do mostly highway or backroad driving with no issues, but when I do have to go into town it will start to overheat. The coolant level is still full. There is a little bit of brown gunk under the radiator cap, but the coolant is still green. I couldn't imagine there being a water pump or head issue considering all that was replaced not that long ago. Possibly just a cheap thermostat going bad?
Any help is greatly appreciated as I am unsure what to look at.
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Old 07-11-2018, 01:23 PM
karu89 karu89 is offline
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Default Re: Overheating with Full Coolant

Did you also replace the fan clutch


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  #3  
Old 07-13-2018, 12:05 AM
Undrstm8ed Undrstm8ed is offline
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Default Re: Overheating with Full Coolant

Or a faulty temp sensor... may show hot when its not
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  #4  
Old 07-13-2018, 01:54 PM
tomboy tomboy is offline
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Default Re: Overheating with Full Coolant

Also have you washed the radiator out from both sides?
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  #5  
Old 07-14-2018, 01:04 AM
karu89 karu89 is offline
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Default Re: Overheating with Full Coolant

Quote:
Originally Posted by Undrstm8ed View Post
Or a faulty temp sensor... may show hot when its not


Can’t be because he stated it overheats in “city” driving


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Old 07-15-2018, 07:37 PM
abear abear is offline
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Default Re: Overheating with Full Coolant

Thanks for the input guys. I did not replace the fan clutch. So that might be the problem. I'll look into replacing that and seeing if that fixes it.

It's definitely not a temp sensor because I can drive all day with no issues until I get into traffic. Then it starts to overheat.
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Old 07-15-2018, 07:55 PM
63merc 63merc is offline
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Default

Quote:
Originally Posted by abear View Post
Thanks for the input guys. I did not replace the fan clutch. So that might be the problem. I'll look into replacing that and seeing if that fixes it.

It's definitely not a temp sensor because I can drive all day with no issues until I get into traffic. Then it starts to overheat.
Definitely change the fan clutch and maybe a new expansion tank cap. Sometimes the seal goes bad and can cause issues.
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