Ok, I checked to see if the fan starts to spin if I turn the A/C on full
blast and it doesn’t. I tried looking for a fuse for the fan just to make
sure it wasn’t blown but I couldn’t find one. HELLLP!!!!! The a/c is cold
when I’m travelling around but at stoplights or stand still it starts to get
warm. There is air blowing thru the vents but I thought the fan behind the
radiator was suppose to kick on as well?
31
Jan
HELLLPPP!!! 86 22RE A/C problem
clueless wrote:
> Ok, I checked to see if the fan starts to spin if I turn the A/C on full
> blast and it doesn’t. I tried looking for a fuse for the fan just to make
> sure it wasn’t blown but I couldn’t find one. HELLLP!!!!! The a/c is cold
> when I’m travelling around but at stoplights or stand still it starts to get
> warm. There is air blowing thru the vents but I thought the fan behind the
> radiator was suppose to kick on as well?
What sort of fan do you have, is it an aftermarket electric fan? If so,
they often have connections for the A/C to turn them on. If you have
the stock fan clutch, there is no A/C connection. There is an "A/C
Amplifier" that cuts off the A/C when the engine speed drops too low.
Yours may be improperly adjusted, its up behind the glove box.
I thought the A/C amplifier kicked up the idle RPMs? There is also a VSV
(vacuum switching valve) on the valve cover that cuts off the compressor
under certain vacuum conditions — I thought under heavy acceleration.
"Roger Brown" <r.c.br…@ieee.org> wrote in message
news:3B9C1020.97E5C4EA@ieee.org…
- Hide quoted text — Show quoted text -
> clueless wrote:
> > Ok, I checked to see if the fan starts to spin if I turn the A/C on full
> > blast and it doesn’t. I tried looking for a fuse for the fan just to
make
> > sure it wasn’t blown but I couldn’t find one. HELLLP!!!!! The a/c is
cold
> > when I’m travelling around but at stoplights or stand still it starts to
get
> > warm. There is air blowing thru the vents but I thought the fan behind
the
> > radiator was suppose to kick on as well?
> What sort of fan do you have, is it an aftermarket electric fan? If so,
> they often have connections for the A/C to turn them on. If you have
> the stock fan clutch, there is no A/C connection. There is an "A/C
> Amplifier" that cuts off the A/C when the engine speed drops too low.
> Yours may be improperly adjusted, its up behind the glove box.
GJS wrote:
> I thought the A/C amplifier kicked up the idle RPMs? There is also a VSV
> (vacuum switching valve) on the valve cover that cuts off the compressor
> under certain vacuum conditions — I thought under heavy acceleration.
According to my (’85) Factory Repair manual:
Inspection of A/C Amplifier:
1. Check engine speed detecting circuit
a. Run the engine and operate the A/C
b. Check that the magnetic clutch disengages at the specific engine RPM:
Cut-off RPM = 600-700 RPM
If the cut-out RPM is too high turn the adjusting knob CW to adjust, if
too low turn know CCW to adjust."