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Old 10-21-2009, 04:13 AM   #16 (permalink)
meanjoe75fan
eco-scrapper
 
Join Date: Sep 2009
Location: New Kensington PA
Posts: 69

Big Blue - '94 Ford F-150 shortbed
90 day: 15.71 mpg (US)

Mexico Nuevo - '84 Honda V45 Sabre
90 day: 36.67 mpg (US)
Thanks: 4
Thanked 10 Times in 7 Posts
I'm bumping this because I have more info to report.

First, I got a setup. Purchased a washer bottle, pump, and attached hose for $25 from a auto salvage site. A bit high, IMO, but they did at least let me test it (place on batt. terminals and listen for noise).

Got it home and used 5' of 1/4" O.D. copper flex tubing for the sprayer. First I notched the metal with an angle grinder, then drilled holes using the smallest bit I had. To close off the end, hammered last 3" flat, then bent it over on itself twice. Tested and worked just fine.

Tonight I removed the shroud and fans. Only two bolts holding it on, though I did have to remove the battery to get at one.

Results from removing the fan: as expected, car runs cooler (~10F) without the restrictive shroud. As it turned out, I never hit the fan's operating temp of 212F...which was good, seeing as I didn't have the sprayer installed yet.

On the downside, the car idles rougher...the ScanGauge reveals: fuel burn similar to stock, load up 10-15% (to 40%) at idle, and RPMs drop from 900-1000 to 500-600! Timing unchanged, and no CEL. I am uncertain why this is happening, as the fan is supposedly "out of the loop" until tripped by the temperature. (The only thing I can think of is some sort of "start-up diagnostics" that checks for fan status. I will be interesting to see if the washer pump motor is a sufficiently good stand-in for the fan motor to "fool" the test, if applicable.)
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