Hank
Elite Explorer
- Joined
- October 19, 1999
- Messages
- 996
- Reaction score
- 2
- City, State
- Cape Coral, FL
- Year, Model & Trim Level
- '91 EB
My '91 was getting a lot of blow-by to the defrost and floor vents when the selector was set to Max AX and or Panel. Turns out the culprit is age and the stretching of the vent control cable. Adjustment instructions are listed below.
Drop the glove box and stuff you hand up behind the left hand passenger vent. You will feel two cables. (one heater valve control, one vent door control) Moving the vent control selector feel around until you feel the other end of the cable and the door flapper moving. Slide your hand about 2" back and you will feel the spring clip holding the cable. Slide the vent selector back to max ac (THIS IS REQUIRED FOR PROPER ADJUSTMENT) Put pressure downward on the spring clip and slide the cable forward untill the door closes completely. (You can tell as all the blow by will stop or greatly reduced)
Hope this helps.
hg
Drop the glove box and stuff you hand up behind the left hand passenger vent. You will feel two cables. (one heater valve control, one vent door control) Moving the vent control selector feel around until you feel the other end of the cable and the door flapper moving. Slide your hand about 2" back and you will feel the spring clip holding the cable. Slide the vent selector back to max ac (THIS IS REQUIRED FOR PROPER ADJUSTMENT) Put pressure downward on the spring clip and slide the cable forward untill the door closes completely. (You can tell as all the blow by will stop or greatly reduced)
Hope this helps.
hg
