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09-01-2012
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#1 |
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Join Date: Sep 2010
Location: Panama City Beach
Posts: 26
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90 Engine pulled now no ac
I had my engine pulled for the stage one treatment, removing the secondary setup, headers, tune, etc.
After getting the car back the ac compressor would not engage. I can ground pin 16 on the C connector and the compressor will run and cool good. I have a signal on pin 2 C connector commanding the ac on. But with the C connector plugged into the ecm the compressor will not turn on. Does anyone know the location of the ac clutch relay on a 90 so I can bypass it and get the ac running temporarily. And is it possible during tuning the ecm could have been accidently set so the ac would not come on? Also I'm working from a 93 book my 90 book does not have section 8A so maybe i'm missing something else as far as the operation of this system. Tom
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09-01-2012
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#2 |
 
Join Date: Jan 2009
Location: Portland Oregon metro area (Washington side)
Posts: 3,207
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Re: 90 Engine pulled now no ac
Did you check for codes being set on the AC head?
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Scott  Vett owner since 1979._It's about the car and the people |
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09-01-2012
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#3 |
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Join Date: Sep 2010
Location: Panama City Beach
Posts: 26
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Re: 90 Engine pulled now no ac
Yes, there are no codes.
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________ 90 white/grey #2011 |
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09-01-2012
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#4 | |
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Join Date: Jan 2009
Location: Portland Oregon metro area (Washington side)
Posts: 3,207
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Re: 90 Engine pulled now no ac
Quote:
Just an idea.
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Scott Vett owner since 1979._It's about the car and the people |
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09-01-2012
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#5 |
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Join Date: Sep 2010
Location: Panama City Beach
Posts: 26
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Re: 90 Engine pulled now no ac
No I don't, I have the missing section of the service manual on order so I can eleminate all other possibilities then I guess I'll be calling the tuner/builder. Just want to make sure that it is not something that may not have been hooked up but it looks like the ECM.
Sure would like to bypass the clutch relay for now if anyone knows its location.
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________ 90 white/grey #2011 |
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09-01-2012
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#6 |
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Join Date: Jan 2009
Location: Portland Oregon metro area (Washington side)
Posts: 3,207
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Re: 90 Engine pulled now no ac
Ok note that on my 90 I found two relays labeled wrong on one of the pages(not this one). I fixed it on my manual page.
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Scott Vett owner since 1979._It's about the car and the people Last edited by scottfab; 10-14-2012 at 03:24 AM. |
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09-01-2012
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#7 |
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Join Date: Sep 2010
Location: Panama City Beach
Posts: 26
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Re: 90 Engine pulled now no ac
Thanks, got the relay bypassed so I have air while I get this problem figured out.
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________ 90 white/grey #2011 |
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09-01-2012
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#8 | |
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Join Date: Jan 2009
Location: Portland Oregon metro area (Washington side)
Posts: 3,207
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Re: 90 Engine pulled now no ac
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Good luck with it. You might want to make notes in you manual as to any mods such as the secondary delete etc. Anyone in the future working on highly modified cars will need such help.
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Scott Vett owner since 1979._It's about the car and the people |
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09-02-2012
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Join Date: Jan 2009
Location: Portland Oregon metro area (Washington side)
Posts: 3,207
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Re: 90 Engine pulled now no ac
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They may have corrected the mislabeled relays in the 91. Not sure.
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Scott Vett owner since 1979._It's about the car and the people |
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10-13-2012
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#10 |
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Join Date: Sep 2010
Location: Panama City Beach
Posts: 26
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Re: 90 Engine pulled now no ac
Got my prom back and reinstalled the other day the ac did get turned off in the tuning. Now all is good.
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Linear Mode
