1990 Pontiac Grand Am OBD code 66 and 62

1990 PONTIAC GRAND AM
181,000 MILES • 4 CYL • FWD • AUTOMATIC
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GIZZARD111
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The A/C on this car has been completly removed and all thats left is electrical connections and the ends of the a/c lines coming out of firewall. My question is I'm getting obd code 66 when i pull the codes and I dont ever have the a/c switch on inside the car,and I am wandering if I can bypass the electrical conector for the a/c pressure switch or if there's any other way to get rid of theses code. I am also getting code 62 and I am thinking a transmission oil and filter change might fix this ? Car runs fine, Have reset the codes and it will go for a couple of weeks before the check engine light and codes comes back.
May 1, 2010 at 11:42 PM
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MMPRINCE4000
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Try pulling fuse to AC system.
May 2, 2010 at 8:12 AM
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GIZZARD111
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unfortunately I can't pull the fuse as that also runs heater fan
May 2, 2010 at 6:51 PM
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MMPRINCE4000
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Then it may be easier to run heater fan on seperate circuit, with factory switch or aftermarket one.
May 3, 2010 at 8:23 AM