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compressor ?

dafish76 on Thu July 17, 2008 10:16 AM User is offline

Year: 1994
Make: chevy
Model: G20
Engine Size: 5.7
Refrigerant Type: 134
Ambient Temp: 90
Pressure Low: 40
Pressure High: 250

Hello i evcauated and recharged the system and everything is working My problem is after the van sits and you turn on the ac the compressor dont come on unless you tap on the clutch after that it works fine Just wondering if this is the coil going bad or something elese If this is the coil can i just replace the coil or should i change the compressor Thankyou

Cussboy on Thu July 17, 2008 10:26 AM User is offline

That sounds like the clutch air gap is too large, and needs to be adjusted smaller. First try tightening the nut/bolt.

GM Tech on Thu July 17, 2008 10:30 AM User is offline

Tightening the nut/bolt on a H-6 series compressor will have no effect- the nut bottoms out on the shank of the shaft and there is a real good chance that the nut is not even there- since it was done away with in '94--- so you need to "borrow" the insertion tool from Autozone and tighten the air gap to .020" -- this makes about 6 wide air gaps in the last 2 weeks- must be a run on them....

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The number one A/C diagnostic tool there is- is to know how much refrigerant is in the system- this can only be done by recovering and weighing the refrigerant!!
Just a thought.... 65% of A/C failures in my 3200 car diagnostic database (GM vehicles) are due to loss of refrigerant due to a leak......

dafish76 on Thu July 17, 2008 10:52 AM User is offline

Ok when you say inserting tool what is this. also could you tell me how to adjust the air gap i never done this befor thankyou for your help

Chick on Fri July 18, 2008 6:59 AM User is offlineView users profile

Here's a pic of the tool and how to turn it. Be careful not to go to far, or you'll need the removval tool to bring it back out.. Hope this helps.


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Chick
Email: Chick

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