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So the little vacuum servo that operates the 'fresh air' (re-circulation) flap on my 90 has officially crapped out (it's a manual HVAC box). I tested it with a hand-pump and it can't hold pressure, the electrical signal is being sent though. Because of this my cabin temp is getting excessively hot as it remains open to turbo-charged heat. Has anyone figured out a trick to replace this little thing without pulling the entire HVAC box? At the very least I'd like to keep the door shut as an interim solution.
 

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I was able to change mine by removing the glove box & disconnecting the dash on the right side. Then, pull the dash away (gently & just what was is needed) & used a stubby screwdriver to access the mounting hardware. It is a tight fit but do-able.
HTH, Chris
 
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