Question about 2001 Oldsmobile Aurora

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4.0 AC compressor cuts off under engine load.

AC blows cold initially but compressor cuts off after a while and everytime under load such as climbing a moderate hill. I turn off the AC then on after a minute or so and the compressor kicks right in but still cuts off under load. If cruising around town on flat ground or sitting parked for a few minutes, the compressor will re-engage without resetting the on/off button.
The car has undergone recent maintenance to install all new gaskets on the engine. Everything was disconnected and the engine/trans/front wheels were removed to do this. AC compression washer on top of the engine compartment had to be replaced after leaking all the oil twice.
I love this car. I just want to be able to use in the 100+ temps here in El Paso.
jimcelpaso@sbcglobal.net

Posted by on

  • km99 Aug 11, 2008

    Yes, GM indicates the compressor needs replaced because it is producing to much pressure which is cutting off the compressor under load. This would be the third compressor in a car with 70,000 miles.

  • yadayada
    yadayada May 11, 2010

    km99 are u aware that at about 60% throttle the compressor is cut off by the PCM? this is normal strategy in any modern car, some less some more, depends on the engine.

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6 Suggested Answers

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SOURCE: Random problem unable to solve...

could be alot things if it didnt pull a code might be ur torque convertor , dirty or faultyinjectors crank position sensor

Posted on Jun 16, 2008

  • 193 Answers

SOURCE: Overheating Intrigue

Check your coolant level and see if it is down. If you have checked heads you will notice your engine oil beginning to turn milky white.

If you want a more complete check for cracked heads, plug all spark plugs, and if you can get a coolant pressure tester, pump it up to 12 or 13 psi and then crank the engine over. Watch for water to spray out of one of the cylinders.

Bill

Posted on Nov 23, 2008

  • 3 Answers

SOURCE: I have a coolant leak.2001 alero 4cy 2.4

Look around the sides of the motor. Aleros are famous for faulty pan gaskets. Ours has been in the shop twice for this. If the mechanic doesn't get it put in just right it will continue to leak.

Posted on Jan 26, 2009

  • 14036 Answers

SOURCE: 1999 olds alero leaking coolant

problem could be heads bolts . i put new bolts in put a little sealer on them . make sure your bolt holes is clean free from debris. put a lillte sealer on intake gasket on top and bottom where coolants travel. if all was done . drain engine oil in clean container .set it aside. take radiator cap off .you a coolant pressure rise kit .put a pan under oil pan with drain plug still off .pressure your radiator about 10 psi. make sure you have antifreeze in radiator and engine . when you pressure up to 10 psi look under the car if coolant comes out oil pan. you got leaking head gasket. if not .put oil pan plug back on . put oil back in car . check your freeze plugs also.

Posted on Mar 17, 2009

  • 32 Answers

SOURCE: MI CADILLAC CATERA 99 PASA ACEITE A EL DEPOSITO DE ANTICONGELANTE

tu problema no eran las cabezas sino un enfriador de aceite que se esncuentra en medio del motor por debajo del multiple de admision lo puedes identificar por las dos lineas gruesas que se le conectan, su funcion es enfriar el aceite del motor pero hay defecto de fabrica y la agencia te repone el motor gratuitamente o puedes comprar la refaccionen la agencia la cual viene perfeccionada por el precio de 350dll

Posted on Sep 19, 2009

  • 18 Answers

SOURCE: engine light came on,dash light said "engine power is reduced"

Did the light stay on after the car was shut off and restarted?

Posted on Jan 21, 2010

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posted by Ron0293 on Sep 27, 2008 Report abuse
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