A/c compressor turns on late

[Raven34]

Hello all,
I'm having an issue with my a/c. When I first turn the car on and a/c the compressor doesn't kick in.

If I let it idle for ten minutes in park the compressor begins working and a/c blows cold air and usually works for most of the day.

If I just get in it and drive, the compressor doesn't seem to ever turn on until I slow down to pull into the parking lot of my destination but only after about 30 mins of driving. Does the same thing if I drive for 2 hours. Doesn't turn on until I arrive.

I replaced the low pressure switch today hoping that would fix it, no such luck. I hooked up to my gauges 2 weeks ago with the compressor on and everything looked fine.

Maybe the high pressure switch next to the exhaust manifold is bad??

Thanks for any help.

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[fastblackmerc]

Try switching relay # 204 (A/C Clutch) in the Power Distribution Box under the hood behind the battery with relay #206 (Fog Lamp). If the A/C starts working then replace the #204 relay.

After alot of use the relay sometimes get "slow" or the contacts don't work properly.

[martyo]

If Jim's suggestion doesn't work, I would also just check the high and low pressure sides.

Remember these cars are 10 years old now and the loss of freon is not uncommon.

[Raven34]

Thanks fbm! Your suggestion worked!

I had to swap #204 with #207 which is the fog lamp relay. #206 is empty.

Thanks for the fast responses everyone!

I don't always post on mm.net....
... But when I do I get valuable help.

Happy 4th everyone!

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