When you guys switched to e-fans, did you get an aftermarket temp probe or did you use an engine temp sensor\switch?

 

aftermarket....the one on the engine will not work...its an Ohms style with resistance to ground.

Best bet is to buy a set up thats either a constant o the variable kind or use the GM sensor that they have used for 20 years...Hypertec make a 170on/165off but they are 40.00 but are a on/off style switch...

cheaper is the Derale style units from Summit racing. if you look in my E-Fan thread there are links to the Light Duty and Heavy Duty Derale units...

 

Thanks, Advance has a kit for $30.00 with the relay, I had the flex a lite kit in my old tbird when the factory sensor burned out, couldnt find it so I put the aftermarket in and it worked good. I have a couple of fans to try, I also have the fan I used on my big block. Did you hook it up from a key source or from the battery?

 

sorry o hijack your thread but i was think the same deal on my truck. would it be better to have the fan push the air thru or pull the air?

 

You cant get a push, ac condenser in front of rad, besides the fan would block the incoming air into the rad, a push fan would most likely cause problems with air flow through the radiator, pull fans work the best.

 

both....

I have 2x12in pushers on the condenser...2x14in on the rad as Pullers..the 2 on the condenser come on via the AC switch..I like the air ice cold while sitting in traffic...

Dirt....I used the Coil wire for the power for the unit the rest comes from the battery direct...fans and relays everything is fused...if you find my E-fan thread there are pics

 

I use the temp probes. They are preset on and off values for the fans and much more affordable than the adjustable units. My experience is setting up in a puller configuration is best. Dr.Bowtie has a great write-up on his install. Worth the read

 

Thanks. I was just wondering where to pull the power for the relay, I always used the pos coil wire for my msd, so I guess a relay is safe.

 

yes it is...you have to figure that the coil wire feeds the coil and it pulls a fair amount of amps. adding an MSD box just turns that wire into a "trigger" wire that turns on the MSD box when the key is turned on so now there is very little load on that wire. so thats the same spot I use for the E-Fan switch Ign ON wire. on mine that also goes to the Relay trigger wire(s) and I run the hot side of the relay (heavy LOAD) direct from the Solenoid post via a fuse...

simple deal really