A/c not engaging
#1
A/c not engaging
First off my a/c pump clutch would not cycle been like this for 2 years now just getting to it so I checked the gap 35 thous so I got it back to where it needs to be still no go blows air just no engaging of the clutch. Will it not engage if there is not enough freon in the system? Kinda lost trying to deal with this without taking it in. Never used a recharge kit so if that's what I need to do how do I go about it?
#2
#4
I believe it is on the high side hose... I think you unplug the connector that goes into it and then jumper the two connections inside. I will try to relay this post to a friend of mine tomorrow, he knows much more about the system than I do. I will see if he can post up and try to help you out a little more
#6
Join Date: Jun 2003
Location: Damon (South East Texas)
Posts: 8,298
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The high pressure switch is on the high pressure line and the low pressure (clutch cycling) switch is on the accumulator-drier. The low pressure switch will open when the pressure is below 23 +/-1 psi. Remove the cap and quickly depress the schrader valve to see if there is still adequate pressure on the system. It could possibly be a bad switch. If so, you could temporarily jumper the low pressure switch plug to see if the clutch engages. If it does, check the temperature of the lines to and from the evaporator case for coolness. When fully charged, the upper and lower lines should be near the same temperature. If the upper line is less cold than the lower one, freon may need to be added.
#7
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#10
Join Date: Jun 2003
Location: Damon (South East Texas)
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Climate Control wiring.pdf
#12
Ok finally got around to checking things out and took some pictures So if I wiggle this harness the clutch will engage and the vent will blow cold air but I can't get it to stay engaged unless I pull up on it and it will stay on even breath on the harness it will go off. And this line was ice cold the one behind it was not very cold atleast not as cold as the front one. Hopefully the pics work
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