I have replaced the left side blower and the heater valve which anti freeze flows through. I was reading about some other problems on a 99 and they were claiming that I should replace the fuse for fog lights. Help would be greatly appericated. Thanks!
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If you replaced the compressor unit, normally R-12 or what ever is used, is evacuated and thus they create a vacuum, then recharge the system to the proper level of gas/ pressure. Vehicles have a vacuum controlled shut-off valve to stop or reduce the flow of anti freeze from the engine to the heater core, near the condenser. There is sometimes a pressure control valve or switch to control, when the actual compressor unit clutch engages to start to pump the gas to cool the cabin area of the vehicle.
There are also fuses/ circuit breakers near the left front fender well under the hood, and left driver's side under left side of dash. I am presuming that the clutch assembly on the compressor functions properly engaging/ disengaging, when system is properly "charged."
put a radiator flush in your expansion bottle run it for about 20 miles to clean out both the core of the radiator and your heater core .then drain it. refill with 50/50 mix of anti freeze. leave off the cap the now as you need to bleed it first. to do so .put your heating on full with the engine ticking over .the water starting to heat up put on your cap.
the heater core is bad it could be leaking and thats what the smell is coming from. you only smell it when the heat is on is because air flows throught the heater core to warm it by the hot anti freeze that flows through the heater core see if you anti freeze resivoir is low.
Probably the heater control valve, had same issue, started with one side not hot, then erratic, hot then cold while heat is set to hot, now both side are cold to lukewarm. diagnosed as heater control valve, common for jag s-types and x-types. located on the passenger side, down low the side of the radiator, it has several hoses into and out of valve, and a electrical connector.
If the thermostat and heater control valve (not the door actuator) are good. Ypu woulwant to check that the heater core is not clogged. The heater control valve is a valve in line with one of the heater hoses which allows flow or no flow to the heater core. You need to check that when temperture is on hot the hose is hot on both sides of the valve. If the valve doesn't work you will not get ant heat.