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JACTcoupe
04-21-2009, 11:00 PM
Ok I searched it but All im getting is people saying they have done it. Can some point me in the direction of how to do it?

nickleman60
04-22-2009, 07:24 AM
What fan mod are you talking about?

JACTcoupe
04-22-2009, 09:17 AM
To make the fan come on at a lower temperature

fturner
04-22-2009, 09:19 AM
That requires a chip.

Fraser

sinhumane
04-22-2009, 08:05 PM
you can make the low speed fan come on when you turn the ignition on by placing a jumper wire between the number 14 and 17 wires on your ircm. the wires are numbered on the plug. :)

thunderkid84
04-22-2009, 10:19 PM
that will mess with the ECT sensor and screw up your A/F settings

QuickMustang
04-23-2009, 12:53 PM
that will mess with the ECT sensor and screw up your A/F settings

Ummm...How? You still have a thermostat that will keep your car at operating temperature. The only thing it will do is wear out your fans quicker? As long as you still have a stock thermostat, you'll be fine...

thunderkid84
04-23-2009, 01:00 PM
if the fan is always on, the car will take alot longer to warm up. so the computer will think the engine is still cold and keep an overly rich A/f going.

fturner
04-23-2009, 02:03 PM
There is a few systems in the EEC programming that doesn't kick in until its over 180F for fuel economy and emissions etc. If the fan runs continuously and you don't go over that temp your mileage etc will suffer.

Fraser

thunderkid84
04-23-2009, 04:16 PM
There is a few systems in the EEC programming that doesn't kick in until its over 180F for fuel economy and emissions etc. If the fan runs continuously and you don't go over that temp your mileage etc will suffer.

Fraser

yea thats what i meant

sinhumane
04-23-2009, 05:35 PM
i only use mine like that in the summer on really hot days. the temps do stay at a balmy 190 then... otherwise its 220-ish. :eek:

Mike8675309
04-23-2009, 06:46 PM
There is a few systems in the EEC programming that doesn't kick in until its over 180F for fuel economy and emissions etc. If the fan runs continuously and you don't go over that temp your mileage etc will suffer.

Fraser

It was my understanding that even those temp cut over values have timers behind them so even if you never hit 180, after so many minutes of engine running, it's going to go into normal warm engine running mode. Is that an incorrect understanding?

fturner
04-23-2009, 07:15 PM
On some of the settings. One setting that requires 176 degrees to actually start a timer is adaptive learning. Adaptive will not start learning until the ECT is over 176F and after a length of time being there, or the timer resets. Thats on a stock tune.

The other item that doesn't have a timer is when the car switches from the base open loop fuel table to the managed open loop fuel table. That is set for 180F stock. The base open loop table is used to assist in warming the car up to temp and tends to have more fuel enrichment. The managed fuel table tends to be a bit leaner. So if your doing WOT runs, depending on what fuel table the car is in, you can either be optimal or be rich... and this I've seen with my own car on the dyno, and at the track.

Fraser