scifone

thanks for coming in... im trying to figure out what is causing my heater to act crazy. so i start the car and it reaches operating temp and the heater still blows cold air... but it doesnt do it all the time... and once the temp gauge was reading that it was hotter than it usually is... i know its right or pretty close to being right because i have a 98 and their temp gauge is pretty accurate. its kind of a wierd situation... any input would be greatly appreciated. and yes the **** is turned to hot not cold. thanks.

robby

02 wife

Thermostat

ls1_doc

iTrader: (6)

Could be a malfunctioning blend door where it is stuck on the open position and only letting cold air in

badjuju342

iTrader: (3)

Or a leaking vacuum line, do you hear any hissing under the dash. A lot of the climare control stuff uses vac. solenoids.

scifone

the only noise i hear is some engine noise through my audio system so i dont think its a vacuum leak... need a better ground. i was leaning towards thermostat... thanks for the replies.

KimberWS6

1.low anti-freeze
2.vaccum problem
3.thermostat
4.heater core
Thats the order I would check stuff in.

scifone

anti-freeze is perfect.... how would i go about finding a vacuum leak?