a/c clutch stopped engaging. no power to green wire to clutch.

[hammer1918]

ya my car idles up and the fan comes on when i short the lo pressure switch but the clutch is not kicking in.

 

[TurboBuRick]

A suggestion: The plug on the compressor next to the clutch can be flipped. If it's backwards it will not engage.

HTH

RL

 

[QUIP'6']

Haven't gotten around to it. As far as flipping wire it was working as is son no need but thanks for the tip. This happened after I reinstalled torque converter. Maybe I pinched a wire

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[TurboDave]

Black plug. Grey is the fuel pump
. I checked the relay and it has 12 volts but when I jump it the clutch still doesn't energize. By the way this is a friends car and doesn't have a scanner

What exactly do you mean you Jumped it??? The signal that energizes that relay is a GROUND from the ECM. The 12v should always be there with the key on. then the ground is supplied by the ECM when A/C is requested.

 

[GNONYX]

Fully charged. Relay has power too

Is it possible the internal relay contact are burnt?
Do you another AC relay to switch just to verify it's OK?

 

[QUIP'6']

I tried another relay. Everything works and when I put air on the fan kicks on and idle changes but tries to stall because of no load change

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[GNONYX]

I tried another relay. Everything works and when I put air on the fan kicks on and idle changes but tries to stall because of no load change

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If you can PM I will email you PDF AC electrical diagram

 

[QUIP'6']

Noticed today the fan is nit kicking on. Could this be a fusible link maybe all I did was put a converter in the tranny and it quit. I got power to the relay and low and pressure switch.

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[QUIP'6']

Help

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[GNONYX]

I tried another relay. Everything works and when I put air on the fan kicks on and idle changes but tries to stall because of no load change

You claimed the fan came on and now it dosen't come? What change?
Did the print help you out?
Need more detail

 

[QUIP'6']

I thought it did I guess I was wrong. I got power to relay on li pressure switch also the high pressure switch but no power to clutch wire

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[GNONYX]

Try to run a wire from the AC output relay straight to the clutch terminal connection and not the clutch wire itself, and see if the clutch engages.

 

[QUIP'6']

Try to run a wire from the AC output relay straight to the clutch terminal connection and not the clutch wire itself, and see if the clutch engages.

It engages when I apply 12 volts to the clutch. What wire from the AC relay

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[GNONYX]

It engages when I apply 12 volts to the clutch. What wire from the AC relay

You never answer me if you received the AC electrical prints I sent to you.
If you did received them, then look at page 8A-21-3 (AC cutout relay) Check and see if the wire is cut.

 

[QUIP'6']

Sorry did not receive them. Email is lpaulabbott@yahoo.com. thanks

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[RmvBfrFlght]

QUIP'6', I posted the wiring diagrams on post 17:

http://www.turbobuick.com/forums/threads/a-c-clutch-stopped-engaging-no-power-to-green-wire-to-clutch.379975/#post-3045771

Click on the thumbnail, then click the upper-right arrow for 'see original post' or such for a larger view.

RemoveBeforeFlight

 

[need boost]

obvious BUT did you check your fuses under the dash there is one for the ac

 

[QUIP'6']

QUIP'6', I posted the wiring diagrams on post 17:

http://www.turbobuick.com/forums/th...-to-green-wire-to-clutch.379975/#post-3045771

Click on the thumbnail, then click the upper-right arrow for 'see original post' or such for a larger view.

RemoveBeforeFlight

thanks got it

obvious BUT did you check your fuses under the dash there is one for the ac

Yes I did thanks

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[GNONYX]

Did you receive the print I sent you?
You apply power from the alternator to the clutch, but did you go from the AC cutout relay on page 8A-21-3 itself to the clutch terminal and see if it engages.
As I stated in the email, is it also possible the ground wires behind the block may be loosen during your installation of the tranny?

 

[QUIP'6']

Did you receive the print I sent you?
You apply power from the alternator to the clutch, but did you go from the AC cutout relay on page 8A-21-3 itself to the clutch terminal and see if it engages.
As I stated in the email, is it also possible the ground wires behind the block may be loosen during your installation of the tranny?

which wire on the relay