Car dies when air conditioner is on?
The engine has Idle Air Controller (IAC) that is suppose to keep the engine speed at a constant (even with changing load - AC, FAN, etc.)
If the IAC is broken your idle will be rough or even die.
Good Luck...
Car dies when air conditioner is on?
My power can only be used for the good.
Report Abuse
You may well be wrong in assuming the air conditioner is faulty. There could be other causes
Ideal air control
Sounds as if your air con is drawing more power than your alternator/battery is capable of supplying - you could try fitting a higher charge rate alternator and a heavy duty battery also ensure battery to chassis earth is sound and clean of rust and grime at metalwork.
I will suggest increasing the idle as the a/c compressor needs the engine to turn the pulley. You might want to check with a mechanic.
Your computer is supposed to correct for the increased engine load when the A/C is turned on. So a dealer's scanner may show that the computer is not sensing the A/C coming on or not controlling the idle speed as designed.
The AC compressor places a large load on your engine.If there is a problem with your IAC(Idle air control)which is located on the throttle body it will cause the vehicle to die when you turn the AC on.Remove the IAC and check it for carbon.If there is carbon try to clean it up with a wire brush.
There could be a couple of reasons for this, first the output from the alternator is to low to charge the battery when the air con is turned on. As a result over the summer months the battery get more and more out of condition. However you say that you have changed the battery and the alternator, so I think its fair to say that we can rule this out.
The Idle speed control valve controls the idle speed of the engine when the load on the engine changes and your foot is off the gas. However if there was a problem with this I would suspect that as soon as you turn the air con on the engine would stall.
From your question you say that for months after using the air con the engine dies, I suspect that the real reason for this is that when the air con is on, ice and water forms on the outside of the air con pump and condenser. This ice and water can spray around the engine bay and if there is any electrics that are around it can cause a short circuit.
The easy way to fix this is to identify the air con pump and condenser, then spay WD40 on all the electrical components you can see in the direct area.
WD40 displaces water and will cause no problems with the cars electrics.
Ja.
Any car less than 2 litter engine will always have trouble with A/C, just a Little advice, don't turn your A/C while you're driving, you need to stop, switch A/C on then drive, if you do this while driving will affect the A/C performance.
No comments:
Post a Comment