Best aux fan?

[jdt10768]

sort of related: my aux fan is not starting when the AC is turned on. What should I look for first? Aux fan is fairly new, within last 9 months. Fuses 3 and 18 - will check. What else? Thanks

[jeffnhiscars]

Thats why I need it The a/c is pitiful at idle and I have done the parralell flow condensor already

They do tend to be pitiful at idle regardless of the fan but it depends somewhat on the compressor (and system in general of course). They are a variable speed pump typically designed to provide adequate pressure at mid to upper range rpm. If you upgraded to a PF then I assume you also are running r134a but if you kept the original compressor (as some do) then you are not likely to get much in the way of low speed cooling no matter what since they are a lower pressure pump than those designed specifically for r134a. Note that even if its a stock compressor that is "r134a compatible" that refers only to the seals and still leaves you with a head pressure challenge.

Having said ALL of that, I always jump (or remove) the fan resistor which absolutely helps cooling at idle on any configuration so I'd try that before I swap fans. Remember to swap your low fan speed fuse for a 30a and when the noise from the stock fan on high starts to drive you insane, try a 14" Spal pusher with curved blades.

I hope that wasnt TMI...its early

[Kevinl]

Thats why I need it The a/c is pitiful at idle and I have done the parralell flow condensor already

[MR 325]

What engine do you have? If it's a M20 why not just run a clutch fan?

An M20 (without A/C) doesn't need an aux fan at all if the clutch fan is working.

[FLG]

What are you trying to accomplish exactly? Stock aux fan is more then adequate, only should come on with A/C or if car is running hot.

[Kevinl]

I have a 2300 cfm perma cool fan which is complete bs imo

I also have a torqflo fan that came with the car which may be better but I have no specs and even if I did Im not sure if you can trust it

I also have an e36 fan but I don't think it will work because its mounted backwards in the e36 to make it a pusher.

I'm tired of wasting money on fans so I want one that is a for sure thing