Question about Cars & Trucks
2002 Lexus es 300 electrical cooling fan shuts on and off with ac on
Hi Dennis, When the AC is selected an additional cooling fan should cut in to cool the additional requirements of the condenser radiator, mounted in front of the radiator cooling the engine. If the operation of the AC fan is intermittent the most probable cause is a defective control relay or a loose connection. The relays are easy to find, being in a housing usually marked on top of the outside. Regards John
Posted on Jul 22, 2012
SOURCE: 92 lexus es300 knock sensor
Need to remove the upper and lower air intake manifold. There are two knock sensors for the front and rear pistons banks. If you plan to do this yourself it is about 1 to 2 hours. While you are at it, there is a short coolant bypass hose sitting in the same spot, replace it. Another problem with the knock sensor is the wire harness used to connect the two knock sensors into one connection sometimes wears out and contacts the metal on the engine causing false signals to the ECM, so replace this cable also.
Just did this last summer on my 99 ES300. Pretty easy.
Posted on Mar 16, 2009
there is a valet switch which prevents this check the glovebox or the panel that opens with the adjustment controls not sure of your model year has all this but if it does you would know where it is
Posted on Mar 23, 2009
When belts squeak it's either from dryness wear or tension / tightness / looseness affecting alignment.
Check for tightness and you can spray with belt dressing and try some WD40 on the compressor pulley.
If none of that doesn't stop it it very well could be the clutch or pulley is stiff from non use and could need replacing soon.
Posted on Jul 27, 2009
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