Air conditioner fan dos not come on when turned on
When I turn on my air conditioner in my 1999 Mercury Mystique, nothing happens (no fan, no nothing). It was just working earlier in the day. Could it be a fuse that was tripped or would it be the blower motor?
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
The Mercury Mystique had somewhat of a bad reputation for wiring problems. I guess my question to you is have you had to have the wiring worked on?? If so, I'd guess that it would be pretty possible for a wire to be hooked up wrong at the ignition switch if somebody has been fooling with that. Just a thought... Also, I'm wondering if the fan continues to run until your battery goes dead?? Now, I'm hoping you don't have the blower motor (for the heater and air conditioner) confused with the electric engine cooling fan. It is normal for the engine fan to run for a while after you shut your engine off. But, I'm probably telling you things you already know along that line.
There must be a" T " hose before the heaters' radiator, that would not allow the water to circulate back to the cars' radiator to be cooled off properly. Or the switch that would open and the close the routing.
On fuel injected vehicles, as opposed to those with carburetors, there is no idle-speed adjustment that holds the throttle blade open a little more or a little less. There is no "fast idle" cam operated by a choke — indeed, there is no choke.
Instead, there is a passage that allows air to go around the throttle blade. That passage has an electrically controlled valve that allows more or less air to go through the passage. In conjunction with a tachometer circuit in the Electronic Control Module, the ECM can completely control the idle speed of the engine, speeding it up as necessary when the air conditioner is turned on, if some electrical device is turned on increasing the load of the alternator, or a higher idle speed is needed due to putting the transmission into gear.
It sounds like that feature is the point of trouble. The air passage that is involved can become blocked, the electrical device can cease operating smoothly, etc.
The first thing to do is disassemble and clean that process. Make sure the air passage is clear, the valve is clean and operates, and so on.
it could be anything. check the fuse to make sure compresser runs. there may be a leak in air conditioning system, check ac belt. no freon in system. also check the relay for the compresser if no power it will not run.
BELIEVE IT OR NOT I THINK ITS YOUR ALTERNATOR! THIS IS TYPICAL FOR THE MYSTIQUE OR SHOULD I SAY (MISTAKE). NOTHING YOU CAN DO , ITS AN ELECTRICAL DESIGN FLAW. THE CARS ARE TO ELECTRONIC FOR THEIR ALTERNATORS OUTPUT. OF COURSE THIS IS MY OWN ASSUMPTION. THEY ARE AN ELECTRICAL NIGHTMARE. HOWEVER I DID FINALLY FIX THE PROBLEM I HAD WITH MINE.( I SOLD IT!)
Can you verify that the radiator fan is coming on when needed? Your Mystique has an electric radiator fan. A sensor on the engine tells the computer to turn on the fan. If it is overheating in traffic or at speeds lower than 45 mph, you fan is probably not working when it should. Your mechanic should be able to tell with a scan tool if the computer is turning the fan on or not. Most likely culprit is the fan relay, but I've seen these with a bad fan motor also.