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ZUKIWORLD Discussion Forum => Suzuki 4x4 Forum => Topic started by: redfourwheel on January 08, 2009, 09:14:12 PM

Title: Grand Vitara with little heat 2002
Post by: redfourwheel on January 08, 2009, 09:14:12 PM

I have a 2002 Grand Vitara with 70K. The heat worked fine until this winter. Now the heat seems to work fairly well while driving but promptly after stopping the heat is almost undetectable.

The coolant is full and clean, and the belts are tight.

Any thoughts?

Dan

Title: Re: Grand Vitara with little heat 2002
Post by: beercheck on January 09, 2009, 06:26:00 AM

First cheap-to-fix guess, assuming it really is full of coolant, is thermostat stuck mostly closed.

Title: Re: Grand Vitara with little heat 2002
Post by: IHBP on January 09, 2009, 10:07:44 AM

check that your heater blower motor is working, there should be a fuse for it in the dash, if the thermo was stuck mostly closed the engine would overheat or run hotter than normal at least and the thermostat doesn't stop coolant flow through the heater core, coolant is always circulating through the heater core unless you shut off the valve in the heater line.

it sounds like when my blower motor quit, if I was up driving 40-50mph it got nice and warm in the truck because there was enough air flow at the front of the truck to force through the heater, when you stop the air flow stops and no more forcing through the heater.

Hope it helps, good luck.