What would cause a Pontiac G5 to run hot even when heater is on?

Asked by May 21, 2014 at 09:52 AM about the 2008 Pontiac G5 GT

Question type: Maintenance & Repair

The fan does not go on when temp
goes up

3 Answers

19,675

The heater in the passenger compartment will not alleviate an overheating problem- and that problem is dangerous to your engine- look at the usual culprits- leak, thermostat, fan switch, fan relay- etc.

1 out of 1 people think this is helpful.

Rad cap,thermostat,cooling temp sensor,water pump,cooling relay1,2 HVAC relay cooling fan all done put freon in A/C still the some. Any idals

4,075

Coolant level at the right amount? Low coolant = hot engine. If level is OK then I would suspect a blockage in the system given all the ancillary parts you have changed. Also, make sure your dive belt is not slipping on the water pump pulley.

Your Answer

Add photo

Related Questions

  • what is the normal running temp range for a 2008 pontiac g5 1 answer

    I was sitting at a drive through and noticed my heater was blowing cold air I checked the temp gauge and it was at 250 fixed the problem but now not sure what normal temp should be.?

    2008 Pontiac G5 Base

    -

    Maintenance & Repair

  • Why aren't my middle air vents aren't blowing any air? Mode Door? 3 answers

    Ever since I got my car a year ago, the two air vents in the middle haven't been blowing out any air. I can hear the air blowing, and both of the outer ones work. I still get both air and heat blowi...

    2007 Pontiac G5

    -

    Maintenance & Repair

  • Heater not getting hot 22 answers

    I have a 2005 pontiac grand prix. Heater fan works, but blows cool air. We replaced the thermostat but that didn't make a difference. What else could be wrong besides the heater core? Is there any...

    2005 Pontiac Grand Prix GT

    -

    Maintenance & Repair

  • Heater not getting hot in my 2005 Pontiac Grand Prix GTP Supercharger 2 answers

    I have a 2005 Pontiac Grand Prix and my heat does not get hot. It blows good but only ever gets luke warm even when the car is warmed up. I was told that the way Pontiac runs their vents the air has...

    2005 Pontiac Grand Prix GTP

    -

    Maintenance & Repair

  • Runs hot 190-240 but heater blows cold air 22 answers

    the temp guage goes to 185 then raises to 240 then back to 180. meanwhile the heater is blowing cold air. Then I park it for five minutes, the temp goes down to 180 and stays there and the heater star...

    1995 Pontiac Firebird Base

    -

    Maintenance & Repair

G5

Looking for a Used G5 in your area?

CarGurus has 567 nationwide G5 listings starting at $2,200.

ZIP:

Search Pontiac G5 Questions

Pontiac G5 Experts

#1 joemom
joemom
Reputation 40
#2 Js08016
Js08016
Reputation 30
#2 Drew Jones
Drew Jones
Reputation 30
View All

Related Models For Sale

Used Pontiac G6
132 Great Deals out of 4,912 listings starting at $999
Used Chevrolet Cobalt
89 Great Deals out of 4,941 listings starting at $1,000
Used Pontiac G8
19 Great Deals out of 403 listings starting at $5,000
Used Honda Civic
1,124 Great Deals out of 64,640 listings starting at $1,195
Used Honda Accord
1,165 Great Deals out of 77,424 listings starting at $969
Used Ford Mustang
682 Great Deals out of 38,187 listings starting at $1,750
Used Pontiac Grand Prix
20 Great Deals out of 3,715 listings starting at $1,995
Used Mazda MAZDA3
437 Great Deals out of 27,029 listings starting at $1,999
Used Toyota Camry
1,439 Great Deals out of 99,763 listings starting at $700
Used Toyota Corolla
1,310 Great Deals out of 67,492 listings starting at $1,399
Used Ford Focus
1,221 Great Deals out of 58,731 listings starting at $1,395
Used Nissan Altima
1,090 Great Deals out of 85,225 listings starting at $695
Used Mitsubishi Eclipse
37 Great Deals out of 1,518 listings starting at $1,495

Used Cars For Sale

2009 Pontiac G5 GT For Sale
29 listings starting at $2,990
2008 Pontiac G5 GT For Sale
27 listings starting at $3,995
2007 Pontiac G5 GT For Sale
32 listings starting at $2,499