Thread: getting cold, anyone ever make a grille cover/screen for a 1930s Ford?

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Originally Posted by firebird77clone

I would have argued that a water cooled engine couldn't be so affected by air cooling - I would have been wrong. What was the solution for the overtemp problem?

There were multiple problems. Fan was pulling 60 amps on startup but the builder used a cheap 30 amp made in China relay, so the relay would just buzz and never make a connection, The fan switch sensor was grounding out against the alternator because he used a straight connector instead of a 90 and bent it ‘to fit’ which essentially broke it and the wire was bouncing against the alternator and grounding out.

He apparently couldn’t figure either of these 2 things out so he installed a second fan in front of the radiator and put it on a manual switch, so when both fans came on they were counter acting each other, he put in the lowest rated t-stat he could find but the auto fan switch was rated at on at 215 degrees off at 195.

Removed the unneeded fan

Replaced 165 t-stat with a 180 last year and put a 195 in last month. Car seems to operate best around 200 degrees and it get better gas mileage there than at ~180ish.

Replaced the relay with a high quality 70 amp fan relay

Replaced the fan switch sensor with the proper one and used the proper water tight 90 degree connector

Cost me all of about $165 in parts and half an afternoon to fix the over heat issue he had been fighting for 6 years. Car hasn’t over heated on me now in 16 months