Overheating is STILL a mystery

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Dec 30, 2022 | 02:40 PM

#11

ski.dive

Senior Member

Joined: Feb 2019

Posts: 300

When my Chevy truck started to run hot at idle, the problem was the radiator fan clutch

Jan 21, 2023 | 10:41 AM

#12

Disel

Senior Member

Joined: Jan 2023

Posts: 133

Hi. The problem with overheating is easily solved. You need to move the thermostat to the top. The problem disappears)).

Jan 23, 2023 | 05:48 PM

#13

650Hawk

Senior Member

Joined: Jun 2015

Posts: 795

From: SoCal

Quote:

Originally Posted by Kameron S

Bought it new off showroom floor. Regular mx always done. This all started w a o2 sensor code which as we know can be many diff things. No one could figure it out but it was finally resolved when the head gasket was replaced. Now the overheating is a mystery. Radiator was last thing to be replaced as mechanic found crack last week. It ran better and took longer to overheat but still overheating. Prior to replacing radiator, overflow was full of thick mud like liquid.

This suggests that oil is mixing with the coolant, likely from a blown/bad head gasket.

Jan 24, 2023 | 01:48 PM

#14

TAINTER

Senior Member

Joined: Sep 2008

Posts: 6,126

From: SE Michigan

Plugged CAT?

Feb 5, 2023 | 09:45 AM

#15

Kameron S

Thread Starter

Junior Member

Joined: Sep 2022

Posts: 13

Quote:

Originally Posted by 650Hawk

This suggests that oil is mixing with the coolant, likely from a blown/bad head gasket.

Head gasket has been replaced along with most everything else.. thermo, rad, heater core, hoses blah blah.

Feb 5, 2023 | 11:45 AM

#16

bronxteck

Senior Member

Joined: Apr 2019

Posts: 3,192

From: BX NY North East

maybe the timing is a bit off or jumped a few teeth causing too much advance timing or maybe the exhaust is plugged up. need to check for exhaust back pressure

Feb 5, 2023 | 02:15 PM

#17

Kameron S

Thread Starter

Junior Member

Joined: Sep 2022

Posts: 13

Quote:

Originally Posted by 650Hawk

This suggests that oil is mixing with the coolant, likely from a blown/bad head gasket.

UPDATE:Just let in run for 10 min in the driveway. Cold engine and no drips of any kind (see pic) , after 10 min, warm engine oil oozing from pan (see pic) and milkshake on oil dipstick and under fill cap.
headgasket was replaced 50-ish miles ago.

Feb 5, 2023 | 03:20 PM

#18

hummerz

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Joined: Jul 2012

Posts: 8,999

From: C-Town

Who replaced the head gasket?

Feb 5, 2023 | 04:29 PM

#19

Kameron S

Thread Starter

Junior Member

Joined: Sep 2022

Posts: 13

Quote:

Originally Posted by hummerz

Who replaced the head gasket?

the same guy who’s been working on it from the start. Shade tree but that’s all he does so his shop is his house. I’m beginning to think he put the gasket on upside down. But that oil leak in the above pics.. yikes! What’s going on w this thing? Do I need t take it elsewhere or will the milkshake be a definite diagnosis?