03-09-2011, 12:28 AM
Join Date: Mar 2010
Have u cleaned the debris out of the heater chamber above the core ?
U can see it if u take the ducts off the side of the chamber at tranny tunnel
level below the radio. R u sure the rad fluid is getting to the heater core. That switch in the heater hose has been known to freeze (corrode) seize closed. Goop,LPS,WD40 or other spray can sometimes free it up to move.
It is said that u might be able to get a vacuum hose into the chamber if u drill a hole with a hole saw just above the core...of course if u hit the core it is all over. The holesaw only needs to be vac/hose size. Cover with ducttape.
If u take the dash out to expose the heater, u can then vacuum the leaves and detritus out and reassemble. Worked for me. Before u take it all apart tho u might check to see that all the heater ductwork is connected to the outlets to the dash and defrost at the windshield.
If the fan is working then it will push some heated air into the cabin and to the w/s. The vents on the dashside near the mirror should push warm air.
If the fan is not working then little or no heat will arrive inside with u.
It is a Suzuki quirk that the fan switch will go south. The fan will usually be ok even when the switch has to be replaced.
The fan switch is common to most Suzuki vehicles near the age of urs. My donor switch came from a 3 cylinder car. Check the auto wreckers.
Cleaned the heater box, replaced the switch, loosened the fluid switch and good to go. Avoid taking the dash out if u can...it is time consuming work.
Get ur wife a good lined jacket for the Arizona cold and u will get kudos for both the heater and the heater(jacket) wink, wink, nudge, nudge !!