Overheating problem
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Joined: Mar 2023
Posts: 80
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From: Salt Lake, Utah
Overheating problem
Hello, I am having a problem with overheating. On my 1986 (l98). Yes car is actually getting hot. I cleared the radiator, water pump pumps and isn’t leaking. have a new thermostat, coolant, radiator cap, and cooling fan. Test for combustion gas in coolant came back negative, system vacuum filled and bled multiple times. Fan is always on and still overheats. Used to run around 175 now climbs all the way to mid 230s before I pull over to cool it down. Oil gets to 250-270. It seems like the oil is heating up first and driving the temperature of everything else up as well. Has anyone else had a similar problem? Where should I look next?
Drifting
Joined: Nov 2018
Posts: 1,760
Likes: 647
From: USA
Is the original catalytic converter still on the car? I would take some temperature readings of the exhaust pre-cat, cat, and post-cat. If it's severely plugged, this can drive up oil temps. Just a thought, good luck👍
Le Mans Master
Joined: Jul 2004
Posts: 6,228
Likes: 698
From: Clifton Park, NY ............Clearwater, FL ... 85 Original Owner
Hello, I am having a problem with overheating. On my 1986 (l98). Yes car is actually getting hot. I cleared the radiator, water pump pumps and isn’t leaking. have a new thermostat, coolant, radiator cap, and cooling fan. Test for combustion gas in coolant came back negative, system vacuum filled and bled multiple times. Fan is always on and still overheats. Used to run around 175 now climbs all the way to mid 230s before I pull over to cool it down. Oil gets to 250-270. It seems like the oil is heating up first and driving the temperature of everything else up as well. Has anyone else had a similar problem? Where should I look next?
Thread Starter
Advanced
Joined: Mar 2023
Posts: 80
Likes: 4
From: Salt Lake, Utah
Thread Starter
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Joined: Mar 2023
Posts: 80
Likes: 4
From: Salt Lake, Utah
Yeah it does still have the stock cats. What temps should I be looking at if they aren’t clogged?
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Joined: Mar 2023
Posts: 80
Likes: 4
From: Salt Lake, Utah
also I do have the air pump deleted, could this be causing an issue?
