foomzz

i bought this 84 back in the winter and the heat works fine--blows a little weak at full---however now its summer--when i change over to a/c it trickles out even on full blow--could it be a relay or maybe is just the blower failing--can anyone help?

Redeasysport

What does your Factory Service manual flow chart say about it?

foomzz

i dont have a factory flow chart-i wish i did anything would help.was really hoping someone had this prob and was a climate control relay or something simple---would love to drive it--but its been in the upper 90's here and will be the rest of the summer---dont want to have to garage my vette for the summer

Redeasysport

I would guess your heater door is stuck open or your A/C needs a charge. The door is one of the most expensive repairs you can have unless you do it yourself with a FSM. Now if Trickle means the fan does not blow that is another issue that the FSM can help with. By the book for $100 and save $100s

foomzz

where can i get one---if my gas is low will cause the compressor to not kick in or something--im really at a lost on this one--never had to work on a a/c before the rest of the engine im fine with--appreciate the help and any suggestion on this

Redeasysport

http://www.helminc.com/helm/product2...1GGMV6K16JDPX3

foomzz

thanks

pablocruise

For the heck of it, you can remove the blower module and then look down into the blower housing(in engine compartment) and see what you can see with a telescoping mirror and flashlight.



I removed my HVAC system off the car(for racing).
When I took apart that blower/AC housing, the A/C coil had a thick layer of oily dust clogging it up.
Inhibitting some of the cold airflow. (the coil is not on the car in the pics, but normally it sits where the wire loom is in the lower left)

While in there, you can also check the status of the blend door.
You can see the heater core.


p.s.: Don't take the housing apart

Can86Z51

Good advice - if froomzz had the C68 electronic AC/heater controls. But as his car is an 84, it has the 'old' manual controls - no blower module at all. From my limited knowledge of the manual controls, I might guess the blower relay? But a good manual would be the best to help out on the 84.

pablocruise

Good catch.
Now I'm curious what the early cars have in that location.

Can86Z51

I'm no expert on the manual systems(non-c68) early C4's, - the answer is nothing. The manual blower 'relay' is in another location - on the firewall I think?