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Originally Posted by ehizon
ok so summer is coming and you know how unforgiving summer is in california. i have a 1987 190e and i was thinking doing an ac job to is or just simply let it go. However i am still trying to consider doing the ac job.
here are the symptons:
-cold air do come out of the vents but it is not cold enough.
-the ac clutch engages but it intermittently disengages
-when the engine temp is above 90 the compressor does not engage at all
-on the center vent, the right side of it blows colder air
-in some cases the vent blows cold and hot air mixed together.
-belts are tight
what do you think should be done to this? a recharge? a complete do over? let me know
thanks,
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- Cold air, but not enough - sounds like your refrigerant charge is low.
- Intermittent clutch disengagement - it's supposed to do this, but if too often, same as last reason...low charge.
- Not REAL sure about no engagement above 90 degrees. I believe there's a sensor that disallows engagement at temps > ???. 90F seems a bit low to cause this. Is the car's coolant temp high?
- Mixed vent temps - blend door problem.
As pointed out above, low/high side readings will tell the story.