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Car still hitting red line on my Temp Gauge?

Tiny
ASH198324
  • MEMBER
  • 2000 CHEVROLET IMPALA
  • 145,000 MILES
2000 Chevrolet impala, 3.6 V6. Head gasket blew took my engine with it. Just replaced my engine, did a compression test, everything was fine, changed thermostat, radiator, radiator cap, Coolant temp sensor. Car still overheating? Need Help ASAP?
Saturday, December 10th, 2011 AT 5:14 AM

11 Replies

Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
So when its running this hot is the radaitor cooling fan coming on?
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Saturday, December 10th, 2011 AT 5:18 AM
Tiny
ASH198324
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Yes it comes on, then it starts dropping again. What can be wrong?
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Saturday, December 10th, 2011 AT 5:22 AM
Tiny
SATURNTECH9
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So both upper and lower radiator hoses are getting really hot?What reading on the temp gauge is the fan coming on?Also do you have a infared temp gun so we can see what temp the cooling fan is actually coming on?
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Saturday, December 10th, 2011 AT 5:27 AM
Tiny
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Actually the both upper and lower radiator hoses are not that hot. We did a Temp test with the infared temp gun couple days ago, when the temp gauge was hitting red line, the engine seemed to be on the normal temp. Can it be the hose going from the thermostat to the heatcore by any chance. Maybe not plugged right?
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Saturday, December 10th, 2011 AT 5:31 AM
Tiny
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Reading on the temp guage when the fan comes on is after it passes the half line and goes up 3 more lines. Then the fans kicks in.
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Saturday, December 10th, 2011 AT 5:32 AM
Tiny
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The heater core will flow ethier direction. What temp did the gun say when the fan came on?Also both hoses should get really hot to the touch or something isnt flowing freely.
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Saturday, December 10th, 2011 AT 5:34 AM
Tiny
ASH198324
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I think it was 180 - 190. The Hoses were hot, but not super hot, because I just started the car it was sitting there for about 2 hrs before I started it and the temp gauge started going up after a good 5 - 10mins.
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Saturday, December 10th, 2011 AT 5:36 AM
Tiny
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I see a listing for the 3.4L or the 3.8L not a 3.6L so which engine do you have?
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Saturday, December 10th, 2011 AT 5:44 AM
Tiny
ASH198324
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  • 8 POSTS
3.4 V6
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Saturday, December 10th, 2011 AT 5:45 AM
Tiny
ASH198324
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Sorry typo. 3.4
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Saturday, December 10th, 2011 AT 5:46 AM
Tiny
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Where did you take your temp readings with the gun?
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Saturday, December 10th, 2011 AT 5:48 AM

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