Since you were considering jumping the relays and having the fan run when it's on 4th speed (always for you...), consider using a fuse to jump the Otterstat -- The fans would run whenever the ignition was on, but it's non-intrusive, Plug-N-Play...
Since you were considering jumping the relays and having the fan run when it's on 4th speed (always for you...), consider using a fuse to jump the Otterstat -- The fans would run whenever the ignition was on, but it's non-intrusive, Plug-N-Play...
If the problem statement is "prevent the cooling fans from cycling with the A/C compressor (i.e. they are on any time the A/C is on, regardless of the compressor cycle)"' another plug and play alternative is the Solid State Fan Relay from Dave McKeen. From his website it "Delays fans for one second and keeps fan running for 20 seconds minimum. That eliminates fans cycling when AC cycles. Plug and Play."
I have that unit and his Solid State Fan Fail unit. These 2 parts are a great upgrade, as are his other offerings.
Dana
1981 DeLorean DMC-12 (5 Speed, Gas Flap, Black Interior, Windshield Antenna, Dark Gray)
Restored as "mostly correct, but with flaws corrected". Pictures and comments of my restoration are in the albums section on my profile.
1985 Chevrolet Corvette, Z51, 4+3 manual
2006 Dodge Magnum R/T (D/D)
2010 Camaro SS (Transformers Edition)
That would do the trick...and no "buts"!
Location: Illinois
Posts: 2,440
My VIN: 11408
Club(s): (DMWC) (TXDMC) (DCUK) (DOI)
why do you want to do this?
Seems like you have cooling system problems you are trying to mask
Supercharged 5.3L LS4 + Porsche 6spd
[email protected]
lsdelorean.com
I am not affiliated with Delorean Midwest in anyway.
Location: Taylors SC
Posts: 5,326
My VIN: (former)05429
Club(s): (DMWC) (DCUK)
I wired my personal car like this in about 1998, actually using Darryl's instruction. Still no overloads, no melted wiring, etc. I do maintain the connections. I was likewise tired of feeling the fans come on and off with the compressor. My car has aftermarket high power fans (not the modern low-current ones, but from another European car circa 1995). I see no detriment. Having the fans cycle on and off doesn't really prevent any overloads, in fact a constant current rather than repeating the startup current over and over seems beneficial. My own observations, YMMV.
Dave S
DMC Midwest - retired but helping
Greenville SC
Posts: 743
Is there anyway to prevent the fans from coming on when AC is on?
Dave M vin 03572
http://dm-eng.weebly.com/
Posts: 743
Not all cars have a high pressure cutoff switch or relief valve.
If you have a car with no HP switch (and consequently no high pressure relief valve), and the compressor never shuts off, and the condenser can't eliminate enough heat for the low side to function properly, all that energy has to go somewhere.
Luke S :: 10270 :: 82 Grey 5-Speed :: Single Watercooled T3 .60/.48 :: Borla Exhaust :: MSD Ignition :: MS3X Fully SFI Odd-fire EFI :: DevilsOwn Methanol Injection
Dave M vin 03572
http://dm-eng.weebly.com/