besides the ac compressor what other motors kick on and off as the car is running? Something is taking power away from the motor as it is running like an ac compressor would do but turn the ac off and it still happens. turns on and off about every four seconds. the power steering stays constant altenator stays constant. Any info will be appreciated.

Thanks
Kevin

 

The AC compressor shouldn't just "kick on and off". Are you talking about the rad fans?

 

no i don't think so this is something that is draining power from the motor while running.

 

More info please?


When does this happen, how often, and by draining power from the engine could you be more specific???

 

Off the top of my head the only thing I can think of that your hearing is the AIR pump, but it shouldn't be coming on every 4 seconds.

 

I dont quite follow you, but your Cooling Fan (which draws heavy amps) turns on automatically when the A/C engages........NOT only when the engine temps rise.

Now......If you are running your defroster in cool weather, you A/C will cycle automatically in order to dehumidify the warm defrost air. When that happens, your cooling fan will kick on.

The reason the cooling fan kicks on when the A/C engages is so cool air is forced past the condensor in order to cool the freon. If the freon is not cooled it will over pressurize and pop a safety valve.

Any time the cooling fan is engaged, there will be a substantual power draw

 

I'd say it's the cooling fans, the A/c compressor does not cycle on and off like most cars. The A/C compressor is a variable stroke rotary, as demand increases the swash plate will tilt and increase load on the unit but it won't be an on/off issue, actually a pretty complex setup.

I've never taken my engine out yet but I don't think that there is an "AIR" pump in our emission controls anywhere.