[DMCForum] Re: My A/C woes (Fixed)

["cruznmd" <racuti1@xxxxxxxxxxxx>]

Nevermind. I'm all square now. The cure?

Oh yes, I'd checked all the wires. You all know how hard it is to 
find a good ground on a plastic car. The black wires on the fan relay 
socket are supposed to be grounded according to the wiring diagram. 
Well to me, that implies that if you do a continuity check between 
them, the meter will indicate continuity because they're all grounded 
to the frame eventually.

WRONG. Oh sure, they were tied together but they sure weren't 
grounded. They are now, and the engine fan and A/C fan/compressor 
clutch circuits are perfect. Everything turns on and off as it 
should. The low pressure switch cycles the compressor correctly. None 
of the relays whine, howl or commutate anymore. John Hervey's fan fix 
2x2 is working correctly and it's a decent product.

For those who are curious, my A/C blows at 57 degrees F. I (cough) 
ran out of time the night we were charging and I have to add the 
final can today.

Cheers,

Rich A.
#5335


--- In DMCForum@xxxxxxxxxxxxxxx, "cruznmd" <racuti1@xxxx> wrote:
> After letting Walt go to town on my A/C system, I'm all charged up 
> and holding pressure.
> 
> Too bad the wiring was hacked. 
> 
> I was missing the diodes in the relay compartment. They are wired 
> head-to-head. One diode keeps the otterstat from tripping the A/C 
> compressor clutch when the A/C isn't on and the other diode keeps 
> current from flowing backwards up the line through the otterstat 
and 
> into your volt meter (which would blow it out).
> 
> I have traced the engine fan and A/C wiring from stem to stern (Lo 
> prsr switch, mode switch, relay compartment, clutch wiring and 
> otterstat) and it is now perfectly correct. I have new diodes. 
> 
> Here's the problem:
> 
> When using John Hervey's fan fix 2x2, the fans come on as they 
> should, be it with the A/C mode switch or the otterstat but the 
> relays stick and when you power down the entire car the fans keep 
> running unless you thump the fanfix box to unstick the relays (I 
even 
> removed the box from the car and the relays read closed on my meter)
> 
> If I remove the box and use a fan relay and jumpers in the fan fail 
> socket, the relay whines and won't close. The fans don't run.
> 
> Any ideas?
> 
> Rich A.
> #5335

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