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Well, I just adjusted the min air screw until it is able to idle cold, but that means my IAC is 0 at hot idle and it idles high at about 1100 RPM Should also mention: TT Street chip with a 3" LT MAF and Translator. Oxygen sensor is original, but I doubt that has to do with my issue since it is...

I know this thread is like 8 years old now, but did you ever figure out the cold idle issue? I'm experiencing the same thing now with my '87 with the TT chip and the only thing that helps is to make it high idle by messing with that adjustment screw

^ Nevermind. Someone answered that earlier -- It's only needed if the stock one is non-adjustable or in bad shape.

Any idea where I could get one? Is it vital to have the 134a version?

This is great input, especially about the flush kit and pressure switch. One question is: does the mineral oil conflict with the 134a or with the PAG oil? I'm still trying to understand that. Anyway, I have heard that the ester oil is the way to go, so I was thinking I'd use that.

Nice! Good to hear it can be done without removing the compressor. Any particular advice on the flush kit?

I've done research on the A/C system and I would like to retrofit to R134a. I understand that the accumulator/dryer would need to be replaced due to the incompatible dessicant, and I would also like to replace the orifice tube. There are guides for doing this like the one located here, but I...