ok i need someone who knows a/c compressors to tell me what i should see on a digital ohmmeter when i put the tester leads on the spades of a mid 90's GM a/c compressor clutch

should i see high resistance or low resistance if it is good ?

i have to go to a yard in the morning and buy one for the '98 3.1L achieva/grand am and i dont know where else to ask right now


this thread shows 4.5 and 4.8 on an old GM jaguar clutch coil

http://bernardembden.com/xjs/comclutch/index.htm
thanks for anything

 

Low resistance, usually. In the range of, I'd say, 3-6 ohms. Bigger compressors would have smaller resistance.

If you have a small motorcycle/alarm 12V battery, you could always bring it with you and put 12V on the compressor clutch to see if it works.

Hope this helps a bit.
Lou

 

awesome thanks it did

the original coil had 2 ohms

GM dealer said compresosr was bad

so we got a known good replacement from another car and it is 4.5

it is the small style delphi compressor, the later style that doesnt kick in and out by physical movement(late 90's serpentine)


but this other one for some reason the pulley is rubbing on the clutch somehow and making metal shavings and in which are sticking to the clutch hub!

it makes metal noise louder and quieter back and forth while running
but is alot quieter when the clutch is engaged though


what is wrong ?

its a known good take off

and its doing this for no reason

thanks!