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Re: [GMCnet] a/c compressor not engaging [message #345275 is a reply to message #345251]

Sun, 14 July 2019 13:58

Deb

Messages: 349
Registered: October 2016
Location: Logan Lake, BC

Karma:

Senior Member

Hi Ken. Well I have gone through the fan speed switch yesterday and appears to be fine. Today I worked my way back from the motor, since that, for me was the most direct and easiest to visualize.
No power going to the motor from the delay relay.
Checked the delay relay - power going in (the purple wire from the blower relay - now yellow from PO) and through that little "jumper" you see in the wiring diagram?
Nothing coming from what was the purple hot wire - now black by PO - that goes through the capacitor to the motor. I pulled the harness and confirmed with the voltmeter that the harness looks good (12+ v across from the incoming 'jumper' to the outgoing 'ppl').

Before I tried it, I wanted to see if it is a reasonable move to by-pass the delay relay with a jumper wire in the harness to see if that gets me power down the line to the motor. I see in the parts interchange that the delay relay shows as 'obsolete' and doesn't seem to have an alternative? What to do if it is toast? Can it be by-passed? I found an earlier thread that suggests it can just be by-passed. http://gmc.mybirdfeeder.net/GMCforum/index.php?t=msg&goto=192311&rid=0 Sounds like the connections are different configuration than what I have though. I have a single harness.

Having some difficulty with the main blower relay - some re-wiring underneath is making it a bit difficult to access half sideways/upside down and my eyes are getting very tired from the close up focus (have to dig out my really close-up cheaters!). But since the current goes through that to the delay relay, I know that it is at least partly working.

Once my eyes are uncrossed, I need to check the wire between the fan switch to the relay (green by the diagram) and the blue going to (coming from?) the resistor pack

I did pull the resistor just because it was easier than checking with the MM and test light. The coils are intact. The harness is FILTHY!

http://www.gmcmhphotos.com/photos/data/7218/resistor_harness.jpg

Deb McWade Logan Lake, BC, CAN GMC Alumnus It's Bigger on the Inside!

[Updated on: Sun, 14 July 2019 14:30]

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[Message index]

		a/c compressor not engaging By: Deb on Thu, 11 July 2019 14:36
		Re: a/c compressor not engaging By: lqqkatjon on Thu, 11 July 2019 15:02
		Re: a/c compressor not engaging By: Deb on Thu, 11 July 2019 15:34
		Re: a/c compressor not engaging By: Deb on Thu, 11 July 2019 17:34
		Re: a/c compressor not engaging By: roy1 on Thu, 11 July 2019 20:40
		Re: a/c compressor not engaging By: Deb on Thu, 11 July 2019 21:10
		Re: a/c compressor not engaging By: Deb on Thu, 11 July 2019 22:02
		Re: [GMCnet] a/c compressor not engaging By: emerystora on Thu, 11 July 2019 23:16
		Re: [GMCnet] a/c compressor not engaging By: Deb on Fri, 12 July 2019 00:00
		Re: [GMCnet] a/c compressor not engaging By: roy1 on Fri, 12 July 2019 00:46
		Re: [GMCnet] a/c compressor not engaging By: emerystora on Fri, 12 July 2019 08:29
		Re: [GMCnet] a/c compressor not engaging By: Deb on Fri, 12 July 2019 13:59
		Re: [GMCnet] a/c compressor not engaging By: Deb on Fri, 12 July 2019 17:01
		Re: [GMCnet] a/c compressor not engaging By: 6cuda6 on Fri, 12 July 2019 18:10
		Re: a/c compressor not engaging By: Chris Tyler on Fri, 12 July 2019 06:06
		Re: a/c compressor not engaging By: Ken Burton on Sat, 13 July 2019 02:14
		Re: [GMCnet] a/c compressor not engaging By: Ken Henderson on Sat, 13 July 2019 06:41
		Re: [GMCnet] a/c compressor not engaging By: Deb on Sat, 13 July 2019 11:23
		Re: [GMCnet] a/c compressor not engaging By: Deb on Sat, 13 July 2019 16:38
		Re: [GMCnet] a/c compressor not engaging By: Ken Burton on Sat, 13 July 2019 23:48
		Re: [GMCnet] a/c compressor not engaging By: Deb on Sun, 14 July 2019 13:58
		Re: [GMCnet] a/c compressor not engaging By: Deb on Sun, 14 July 2019 15:12
		Re: [GMCnet] a/c compressor not engaging By: Ken Henderson on Sun, 14 July 2019 15:41
		Re: [GMCnet] a/c compressor not engaging By: 6cuda6 on Sun, 14 July 2019 16:40
		Re: [GMCnet] a/c compressor not engaging By: Deb on Sun, 14 July 2019 16:43
		Re: [GMCnet] a/c compressor not engaging By: Deb on Sun, 14 July 2019 17:17
		Re: [GMCnet] a/c compressor not engaging By: Ken Burton on Sun, 14 July 2019 17:44
		Re: [GMCnet] a/c compressor not engaging By: Deb on Sun, 14 July 2019 18:59
		Re: [GMCnet] a/c compressor not engaging By: emerystora on Sun, 14 July 2019 14:35
		Re: [GMCnet] a/c compressor not engaging By: Deb on Mon, 15 July 2019 09:55
		Re: [GMCnet] a/c compressor not engaging By: Deb on Mon, 15 July 2019 12:38
		Re: [GMCnet] a/c compressor not engaging By: emerystora on Mon, 15 July 2019 13:22
		Re: [GMCnet] a/c compressor not engaging By: Deb on Mon, 15 July 2019 13:39
		Re: [GMCnet] a/c compressor not engaging By: k2gkk on Mon, 15 July 2019 14:14
		Re: [GMCnet] a/c compressor not engaging By: Deb on Mon, 15 July 2019 14:53
		Re: [GMCnet] a/c compressor not engaging By: Deb on Wed, 14 August 2019 13:53
		Re: a/c compressor not engaging By: jhbridges on Wed, 14 August 2019 15:58
		Re: a/c compressor not engaging By: JohnL455 on Wed, 14 August 2019 17:52
		Re: a/c compressor not engaging By: JohnL455 on Wed, 14 August 2019 17:54
		Re: a/c compressor not engaging By: Deb on Wed, 14 August 2019 18:27
		Re: a/c compressor not engaging By: JohnL455 on Thu, 15 August 2019 11:28

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