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| Replacing Thermostat (Page 1/1) |
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Salsapants
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MAY 11, 06:37 PM
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So I noticed that my car had been showing signs that it was starting to overheat. There's plenty of coolant in it, so i thought I would change out the thermostat. Got a new one today and put it in. Took it for a drive around the block to just be sure but then the needle pegged out at max temp. The motor didn't feel any hotter than it normally does when I would drive it before. Is this not a thermostat issue and maybe something else? Any help would be great, as I now need to drive this for a little since my truck got a tree dropped on it.
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olejoedad
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MAY 11, 07:08 PM
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Pull the thermostat and drive it around a bit, first making sure that the radiator, expansion tank and engine are full.
Recheck and fill as needed.
Be sure that the hose from the radiator overflow to the expansion tank is not leaking!
After the system maintains level, pop the t-stat back into it.
Also, make sure that the thermostat cap inner disc is free to rotate, so that when the t-stat cap is tightened it doesn't twist the handle on the t-stat.[This message has been edited by olejoedad (edited 05-11-2022).]
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Patrick
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MAY 11, 07:15 PM
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| quote | Originally posted by Salsapants:
...but then the needle pegged out at max temp.
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If your temp gauge was accurate, then you would've had coolant boiling out of the overflow reservoir. I suspect you have either a gauge or sender issue.
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Salsapants
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MAY 11, 07:25 PM
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| quote | Originally posted by Patrick:
If your temp gauge was accurate, then you would've had coolant boiling out of the overflow reservoir. I suspect you have either a gauge or sender issue.
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That's what I figured, but better safe than sorry, so I hurried back home.
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Salsapants
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MAY 11, 07:26 PM
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| quote | Originally posted by Patrick:
If your temp gauge was accurate, then you would've had coolant boiling out of the overflow reservoir. I suspect you have either a gauge or sender issue.
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I DID hear some slight bubbling when I opened the hood, coming from the overflow.
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Patrick
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MAY 11, 07:34 PM
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| quote | Originally posted by Salsapants:
I DID hear some slight bubbling when I opened the hood, coming from the overflow.
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Keep in mind that every time your engine heats up and cools down, coolant is being transferred back and forth from the coolant reservoir. That's one reason why olejoedad suggested to you... "Be sure that the hose from the radiator overflow to the expansion tank is not leaking!"
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Dennis LaGrua
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MAY 11, 10:02 PM
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You can check engine temperature with a laser pyrometer. Focus it on your radiator and it will give a good idea if the engine is overheating. You can buy them at Harbor Freight or online for around $20. ------------------
" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "
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Salsapants
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MAY 12, 09:14 PM
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So I think i might have the issue fixed. I think i just need to add some more coolant. Man, this has not been a good week lol.
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