Forum > General Help- Ask the Experts...
Auxiliary Radiator Cooling Fan
1972 Wagon:
I think we were trying to use the R-134 b/c it is easy to find. A few years back, he had recharged the AC system and I never asked if he used Freon-12 as I was just happy to have cold air again. This time when the compressor seized, we felt it was time to make the switch. Now my mechanic said there is a replacement for R-134 that is super expensive. If I remember correctly, just the recovery unit is $10,000. As we live in a small, rural community, he doesn't think he will buy the new unit as it will take too long to recoup his investment. Most people in our area tend to keep their cars until they finally quit running.
65ShelbyClone:
If putting a shop fan in front of the car makes the A/C start working again, then it sounds like an airflow issue through the condenser. This is common even with modern cars and is why they often have an electric fan that stays on when the A/C is in use. My '04 Toyota Tacoma only has a mechanical fan and the vent discharge temps climb quite a bit when it's stationary and idling. Raising the idle with my foot up to about 1500 helps noticeably. I think it would help your situation to find a better fan and have a shroud installed if there isn't one.
Wittsend:
I agree about a shroud. Lots of testing done in the Sunbeam Tiger community and they really help when done properly (tight fit and 1/3 depth outside the shroud).
A few posts up I mentioned the R-12 I had. I gave them to my son in law to post for sale. MONTHS went by without a bite. That regardless that others were asking $30-$35 a can (some as much as $50!) and I was asking equal to $15 (but selling it as one 15 can lot only). Then we hit triple digits here in So. Cal. and the phone chimed. In the end the guy got 10 cans of R-12 (14oz.) and a free bonus of a partial R-12 can and 4 additional cans of leak test, compressor oil, R-12 substitute and the like for $150.
So, if it took that long to sell at roughly $15 a can do any of the people selling it at $30 EVER sell it??? It was all gain for me. Our city has a Hazardous Waste Recycle Center and they have a "Re-use" room with items for the taking. I got all that R-12 stuff there for FREE! It looks like my cars are going to college after all. LOL
dga57:
--- Quote from: Wittsend on September 06, 2022, 01:15:48 PM ---It was all gain for me. Our city has a Hazardous Waste Recycle Center and they have a "Re-use" room with items for the taking. I got all that R-12 stuff there for FREE! It looks like my cars are going to college after all. LOL
--- End quote ---
You did well. Congratulation s!!!
Dwayne :)
1972 Wagon:
Friday, our Pinto AC was "almost" ready. In front of the radiator, a 6.5" Spal Pusher Auxiliary Fan was installed. Installed on the passenger fender is a Ron Francis 30 Amp Dual Circuit Relay Wiring Kit. One fuse runs the new fan and the other powers the AC compressor. The original 30 amp fuse in the fuse box now runs just the blower motor. While idling, the new fan seems to help the R-134 cool better. One problem remains and that is a vacuum leak. During acceleration, the air stops blowing out of the two air ducts and switches to the defroster vent. Once acceleration stops, the air switches back to the vents. The shop installed a new AC check valve. The have checked all the usual places that might be causing the vacuum leak. Any ideas?
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