Climate control issue

[ajdavidson]

I just purchased an 84 Lincoln Towncar Signature with only 40,000 original miles on it. I have already had to replace the trany seals, and all fluids, rear fuel line, water pump and front shocks. I bought the car right and knew i would have some issues from it not being used much. The vacumm line by the fire wall on the engine side was cracked and replaced. My problem is, there seems to be a constant hiss in the dash near the climate controls and the heater contantly runs in any mode. Oh ya, the A/C doesn't cool either. I think it's only the freeon being the compressor was replaced a while back. Any thoughts or ideas where I should start looking to fix the heater/Auto climate control issue.

 

[vegaswheelman]

I'd locate and repair the vacuum leak, then see if the problem persists. your blendoor may be vacuum operated.

 

[96 mark viii]

Yeah, what he said. Always fix what you know is wrong first. Then move on to whatever problems are left.