Fan...

Rick 91GT · Jul 5, 2005

At what temp or what triggers the fan to come on in a SN car? Not counting the A/C....

TheDamned · Jul 5, 2005

Not sure but mine is teh devil! God, she's so loud we can cleary hear it from outside of the car. She goes on and off I have no idea what temp.. I would be interested in that aswell, just curious.

CManT1914 · Jul 5, 2005

I believe 210. At least that's where mine always sits at if I don't turn on the fan manually.

bayellowstang · Jul 5, 2005

fan low speed on at 215, off at 210. highspeed on att 224, off at 220.

These are the cobra settings. the cobra R settings are a little different. I'm sure the gt settings are a litle different too.

HISSIN50 · Jul 5, 2005

Rick My low speed comes on at 208 and goes off at ~200*F.
I can dig through the factory manual if you need an exact spec.

If you are working on a high speed circuit, check for recall work at the fan connector, etc (or a charred high speed connector - common issue).

Rick 91GT · Jul 5, 2005

HISSIN50 said:
Rick My low speed comes on at 208 and goes off at ~200*F.
I can dig through the factory manual if you need an exact spec.

If you are working on a high speed circuit, check for recall work at the fan connector, etc (or a charred high speed connector - common issue).

Thanks, I put a new connector on it prior to putting the combo back together. I just never realized how high the temp got before the fan kick's on, the last 2 SN series cars I worked on had manual switches so this was a first for me if you can believe that.

The temps I recorded tonight are near identical to yours

Thanks

HISSIN50 · Jul 5, 2005

Good deal Rick. With the cruddy factory tune [for GT's] and the fan switch thresholds, I am thinking of running one of Baskin's controllers (I have manual switches on low and high, but flipping switches constantly gets old).

Sounds like a fun project Rick.

blksn955.o · Jul 5, 2005

Do you have a tweecer? I changed the fan settings to work with the 190 stat. and it fixed alot of things I was hunting around for before I tore out the tired stock shortblock. That and I have heard that the correct setting work using the tweecer helps with the det. issues common to 94-95 cars (prob. since they run so damn hot).

HISSIN50 · Jul 6, 2005

blksn955.o said:
Do you have a tweecer? I changed the fan settings to work with the 190 stat. and it fixed alot of things I was hunting around for before I tore out the tired stock shortblock. That and I have heard that the correct setting work using the tweecer helps with the det. issues common to 94-95 cars (prob. since they run so damn hot).

I am not sure if this was directed at me or Rick. If Rick, it is likely a customer's car.

If me, I keep my ear to the ground a little with TwEECer stuff and have considered it, but cant bring myself to spend the bucks. The learning curve sounds fun too. :rollseyes: (My hat is off to you guys who grew up with computers and are savvy with the stuff).

But yeah, being able to change fan settings would be a reason to get a handheld (do that and knock down some spark timing and dial in some fuel to make it more SN cobra-ish). Lot of work and price for just that.

Too bad there is not a cheaper way to get fan settings for a 180 stat and remove timing.

Rick 91GT · Jul 6, 2005

Customer's car for me, stock computer.

I have never messed with a TwEECer but have played with Speedbrains, EEC Tuners, PMS, etc... I have heard of guys wiring in a VW fan controller on the SN cars to get the can to kick on early, never tried it myself but I may look into it.

blksn955.o · Jul 6, 2005

with the fan settings set correctly, you can ADD timing I have more timing now in the upper load sections (31-32*) total and no pinging were stock with the factory 26* I was pinging like mad with 87oct or mid grade. I have heard of people going as high as 36*.

My question was geared more to rick, but yes the ability to controle the eec is well worth the learning curve and money spent on the tweecer. My eec is running a very lightly modded cobra file and so far has had little issues with the computer side of things.

HISSIN50 · Jul 6, 2005

blksn955.o said:
with the fan settings set correctly, you can ADD timing I have more timing now in the upper load sections (31-32*) total and no pinging were stock with the factory 26* I was pinging like mad with 87oct or mid grade. I have heard of people going as high as 36*.

My question was geared more to rick, but yes the ability to controle the eec is well worth the learning curve and money spent on the tweecer. My eec is running a very lightly modded cobra file and so far has had little issues with the computer side of things.

Well that is a little loaded then - you added timing after using a lightly modded Cobra file? That is like me saying that I run 18* base timing but that I have an A9P computer.

I do wish I had as little advance as you do. I have over 35* of advance (over 40* total timing) by 2K RPM. This is on a 94 AODE car (U-gghh, I mean U4 computer).
That is just wrong. Your total timing sounds very appealing.
If someone gave me a TwEECer, I would learn it. I just cant toss out the cash for one.

Rick, thanks for the VW fan switching/controller info. I had not heard of that and will take a looksie into that.

blksn955.o · Jul 6, 2005

I also ran a tm4o (gt 5spd) program (using the cobras 24#inj. breakpoint/slopes and with the fan setting I ran the same timing with no pinging (I did not lean the A/F out just left it stock). I did alter the fuel and spark tables in the j4j1 (cobra calibration) to run 13.1-13.2 A/F with 32*. as stock is like close to 11:1. So loaded yes but also leaner.

Another issue seems that when people disconnect the EGR and dont have the abilty to turn off the EGR in the eec pinging starts at driving around loads. I think I read in the tweecer forums that the EGR tables have added timing (thinking there is more fuel being added from the re-circ. of the exh.) and this causes mid load/low load pinging but at WOT it should not be an issue as the EGR is turned off or not used at WOT.

HISSIN50 · Jul 6, 2005

blksn955.o said:
I also ran a tm4o (gt 5spd) program (using the cobras 24#inj. breakpoint/slopes and with the fan setting I ran the same timing with no pinging (I did not lean the A/F out just left it stock). I did alter the fuel and spark tables in the j4j1 (cobra calibration) to run 13.1-13.2 A/F with 32*. as stock is like close to 11:1. So loaded yes but also leaner.

Another issue seems that when people disconnect the EGR and dont have the abilty to turn off the EGR in the eec pinging starts at driving around loads. I think I read in the tweecer forums that the EGR tables have added timing (thinking there is more fuel being added from the re-circ. of the exh.) and this causes mid load/low load pinging but at WOT it should not be an issue as the EGR is turned off or not used at WOT.

Gotcha. That works.

EGR: The inert gasses allow the puter to dial in a good bit more timing as well as dialing back injector pulsewidth (inert gasses lower the A/F mix's volatility. So more timing and less fuel are used, but at the cost of performance, which is not needed at cruise). Good for fuel economy.
If one has no ingress of inert gasses but the puter thinks there is, and part-throttle detonation is a real concern. No EGR at idle or WOT, and not till the motor is warm.
The EGR gasses also cool the chambers a little bit, which helps.

Fan...

Rick 91GT

Mustang Master

TheDamned

"I am Canadian and Damned for it!"

CManT1914

New Member

bayellowstang

Member

HISSIN50

"How long does it take to get help in here?

Rick 91GT

Mustang Master

HISSIN50

"How long does it take to get help in here?

blksn955.o

HISSIN50

"How long does it take to get help in here?

Rick 91GT

Mustang Master

blksn955.o

HISSIN50

"How long does it take to get help in here?

blksn955.o

HISSIN50

"How long does it take to get help in here?

Similar threads

Fan...

Mustang Master

"I am Canadian and Damned for it!"

New Member

Member

"How long does it take to get help in here?

Mustang Master

"How long does it take to get help in here?

"How long does it take to get help in here?

Mustang Master

"How long does it take to get help in here?

"How long does it take to get help in here?

Similar threads

Privacy & Transparency

Privacy & Transparency