Regarding the AC check that fuse 6 and 16 are not blown plus everything is connected at the compressor and pressostat (pressure sensor at accumulator - that big round aluminium can in engine bay).

If engine is running, switching AC button ON and blower ON (any speed) still doesn't engage the compressor's clutch then unplug the pressostat's electrical connector and short the two electrical contacts within. This should engage the clutch. If not there might be some issue at compressor's clutch coil.

If the clutch engages when shorting the contacts then you might be dealing with low refrigerant pressure (need to add more) or faulty pressostat. Connect an AC gauge to read refrigerant pressure to know which could be the issue.

If all is ok but still no cooling then your heater valve may have stuck open plus faulty air-mix door within the AC enclosure/box in the cabin.

Lastly check the AC belt. Just about 0.5 cm deflection when pressed midway between the pulleys.

That's roughly about it. I could assist with more details after knowing your findings.

Regards,
Amarin.

Dear don57,

Hope you're well. The aircon may simply need to be vacuumed-out and recharged.

If service records do not show that the heater hoses and heater control valve have been replaced recently, make that top priority. Buy Volvo brand heater hoses: they'll last for 15 years.

With hoses, one cannot tell very much about quality, by looking at them. Rubber's durability depends on the formula (ingredients) and processing method.

Heater hoses are mission-critical: if they fail, coolant is lost and a headgasket replacement might be required. Heater hoses are hard to access, so there's no reason to try to save a few bucks on a hard-to-access part.

Hope this helps.

Yours faithfully

Spook

Don57, did you make the purchase? I hope it works out great for you if you did. I've got a 1992 940 GL that belonged to my parents, so I guess I'm the second owner. It has about 185,500 miles, but is rust-free and looks great. Interior looks like new, exterior is very nice but some expected signs of wear and age (but always garaged). What's the best way to determine a fair price for the car?

Don't blink or it'll be gone.

Original owner car with 108k miles!

Low mile bricks are few and far between these days, and getting bigger dollars...

Buy it.

That would actually worry me. You are talking less than 5000 miles a year. One of three reasons:

Driven consistently but only for short distances (rarely got up to temp)
Sat for a long time (usually not a good thing)
Broken odo

Lots of things wear from mileage but lots of things also fail from age and neglect. This is NOT a 940 specific issue and actually all the post-kjet cars do better than most being revived after a long sleep and recover well from neglect.

Check oil, coolant and tranny fluid to make sure none of the have commingled and the rest is in the FAQ's.