I have a 2002 Bonneville and my heaT blows luke warm air not hot .. it will heat up if driving and go on thruway but not when just sitting and running any suggestions????

Asked by Nov 25, 2016 at 01:05 PM about the 2002 Pontiac Bonneville

Question type: Maintenance & Repair

1 Answer

24,825

Check the coolant level. If it's low, not enough coolant can circulate to the heater core. You can also check the heater hoses when the engine is running and up to temperature, squeeze them and see if they are hot and feel pressurized. If not coolant is not flowing to the core, which indicates either low coolant levels, a bad thermostat not opening, or a failing water pump. Based on your description though, my bet is on a bad water pump.

Your Answer

Add photo

Related Questions

Search Pontiac Bonneville Questions

Pontiac Bonneville Experts

#1 ticklemedaly
ticklemedaly
Reputation 380
#2 Js08016
Js08016
Reputation 360
#2 dandyoun
dandyoun
Reputation 360
View All

Related Models For Sale

Used Pontiac Grand Prix
3 Great Deals out of 77 listings starting at $2,990
Used Chevrolet Impala
59 Great Deals out of 982 listings starting at $799
Used Chevrolet Monte Carlo
13 listings starting at $7,895
Used Chevrolet Camaro
848 listings starting at $8,995
Used Chevrolet Malibu
101 Great Deals out of 2,535 listings starting at $2,995
Used Buick Regal
10 Great Deals out of 382 listings starting at $9,555
Used Honda Accord
117 Great Deals out of 1,243 listings starting at $1,495
Used Ford Mustang
4 Great Deals out of 1,358 listings starting at $5,980

Used Cars For Sale

2004 Pontiac Bonneville For Sale
1 listings starting at $5,950

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.