3L W/o AC=No Cooling Fans

Newcat016 · 04-19-2008, 11:56 PM

Now since I had this swap done it october of last year, i've never really noticed it but since its been getting warmer lately i've noticed that the low and high speed fans never kick on when in traffic or idling. The temp gauge doesn't move above t.d.c. so unless its borken everything looks to be good. I just don't want to cook the 3L on my first long trip in 90 degree heat. Anyone else have this issue and what did they do to resolve it? I used to have a 2.5 ATX and the fan came on even in the winter. I never changed the raditator so its the stock ATX one just without anything A/C related. Any thoughts or am i going to have to go deeper into this one?

BigBalledOX · 04-20-2008, 12:00 AM

You can adjust the tune so that the fans kick on sooner. I know jaged runs a 3L with no A/C and has no overheating problem.

I sincerely hope you invested in an aftermarket water temp gauge though - the stock one is ****, by the time it tells you your engine's too hot you're pretty well ****ed.

brapple · 04-20-2008, 07:29 AM

the aftermarket guage is nice but I noticed it is alot slower to respond then what the pcm is reading.

only thing that I can think if it the high pressure switch was a ground that let the fans work as I recall someone wiring a switch to turn the fans on to the high pressure sensor.

also make sure the fans are plugged in correctly.

fordrule · 04-20-2008, 09:08 AM

the plugs are around the battery tray. i know mine were not all the way connected and the fans were not kickin on except on high...check the wiring

Blackcoog · 04-20-2008, 10:58 AM

There is a way to read the engine coolant temp by pressing the select and reset buttons on the dash (search for it). If you are getting over 220 degrees without fans then there is an issue. It's possible your t-stat is stuck open and your not ever getting to temp.

bensenvill · 04-20-2008, 11:08 PM

yes you need a way of correctly reading the temperature and not trusting what the stock displays are/are not telling you.

without AC I believe you will never see low fan speeds again but it should hop to high at 220.

I run without an A/C as well without issue.

Bergie_dark by design · 04-20-2008, 11:33 PM

no ac in my car... still fine, never overheats.

Newcat016 · 04-21-2008, 02:41 PM

It appears that the drowning pool,nonpoint,five finger death punch concert had played one hell of a game on my hearing. Upon using the in-car unit,reset button to check engine temp i discovered without fans shes at 194-198=very nice. The low limit fans do kick on at 210 and it took me 5 minutes to get there from 198 with just revving the engine. I'm not too worried now but it appears that they are running. Was just used to high-speed fan when i had the old ATX 2.5...never even noticed the low one.Cooling=ok

bensenvill · 04-21-2008, 05:03 PM

lol, good to hear, I was convinced mine were broken for years because I have never once heard them turn on [until I dropped in an svt radiator and had to make sure the lines were filled]

04-19-2008, 11:56 PM	#1 (permalink)
Newcat016 NECO Member Join Date: May 2004 Location: CT Posts: 701	3L W/o AC=No Cooling Fans Now since I had this swap done it october of last year, i've never really noticed it but since its been getting warmer lately i've noticed that the low and high speed fans never kick on when in traffic or idling. The temp gauge doesn't move above t.d.c. so unless its borken everything looks to be good. I just don't want to cook the 3L on my first long trip in 90 degree heat. Anyone else have this issue and what did they do to resolve it? I used to have a 2.5 ATX and the fan came on even in the winter. I never changed the raditator so its the stock ATX one just without anything A/C related. Any thoughts or am i going to have to go deeper into this one? __________________ 99' Black Cougar MTX+3L Swap By Aircougar Performance 14.68 @ 96mph Time for Torsen

04-20-2008, 07:29 AM	#3 (permalink)
brapple NECO Member Join Date: Oct 2004 Location: Enfield, CT Posts: 973	Re: 3L W/o AC=No Cooling Fans the aftermarket guage is nice but I noticed it is alot slower to respond then what the pcm is reading. only thing that I can think if it the high pressure switch was a ground that let the fans work as I recall someone wiring a switch to turn the fans on to the high pressure sensor. also make sure the fans are plugged in correctly. __________________ - 95 Mystique LS Zetec 5-spd - 99 Contour SeVT Duratec 5-spd (3L and NPG Turbo Kit) - 2k Contour SVT - #2137

04-20-2008, 09:08 AM	#4 (permalink)
fordrule someone call a medvac Join Date: Dec 2002 Location: balad, iraq...again/Clarksville,Tn Posts: 5,345 Blog Entries: 1	Re: 3L W/o AC=No Cooling Fans the plugs are around the battery tray. i know mine were not all the way connected and the fans were not kickin on except on high...check the wiring __________________ We Can Rebuild Her 3L MoToR:02 3L, SVT UIM/LIM/TB/INJ/CAMS, st200 springs, pnp, xcal 2,PRP, hi-flo cat HMS prepped mtx-75:quaife, slick shift forks, "koated kogbox", focus tower, B&M. car mod: GMK HP CF CAI, weapon r headers, relocated battery, st200 RTSB, OMP FTSB, GC, roush swaybar, Audi RS6 HIDs, angel eyes, CF fenders/hood/mirror caps/ eclipse gas door, painted taillight covers/headlight inserts, WW grill,18" centerline,Full Roush lip Kit and spoiler, 17" Roush Ver. 2 wheels.

04-20-2008, 10:58 AM	#5 (permalink)
Blackcoog 3L Install Maestro Join Date: Oct 2000 Location: Minneapolis, MN Posts: 4,309	Re: 3L W/o AC=No Cooling Fans There is a way to read the engine coolant temp by pressing the select and reset buttons on the dash (search for it). If you are getting over 220 degrees without fans then there is an issue. It's possible your t-stat is stuck open and your not ever getting to temp. __________________ Current Rides 1999 MTX Cougar, 3L Supercharged 325hp and 278tq 1999 SVT Contour, Ported 3L Visit: http://www.3lduratec.com For info on ready to drop in 3L's and our supercharger kit.

04-20-2008, 11:08 PM	#6 (permalink)
bensenvill 5% Nation of Join Date: Aug 2003 Location: Chicago Posts: 12,645 Blog Entries: 4	Re: 3L W/o AC=No Cooling Fans yes you need a way of correctly reading the temperature and not trusting what the stock displays are/are not telling you. without AC I believe you will never see low fan speeds again but it should hop to high at 220. I run without an A/C as well without issue. __________________ 1994 Lincoln Towncar w/ 112576 1996 Contour SE MTX loaded w/ 134592 1999 Silver Frost ATX original owner w/ 70049 [in storage] Highway: noun, \ˈhī-ˌwā\ A public roadway consisting of a series of moving chicanes.

04-20-2008, 11:33 PM	#7 (permalink)
Bergie_dark by design NECO Member Join Date: Feb 2007 Location: Fond du Lac Posts: 718	Re: 3L W/o AC=No Cooling Fans no ac in my car... still fine, never overheats. __________________ Dark by design- "2" 1996 Eagle Talon awd tsi - 1999 Mercury Cougar 3L - 2003 Mustang svt Cobra - 2000 Focus zx3 - 1989 240sx silvia - 1997 Eclipse Gs - T - 2002 Bonneville ssei - "2" Vw Jetta Gli - 1988 Corrado G60 -

04-21-2008, 02:41 PM	#8 (permalink)
Newcat016 NECO Member Join Date: May 2004 Location: CT Posts: 701	Re: 3L W/o AC=No Cooling Fans It appears that the drowning pool,nonpoint,five finger death punch concert had played one hell of a game on my hearing. Upon using the in-car unit,reset button to check engine temp i discovered without fans shes at 194-198=very nice. The low limit fans do kick on at 210 and it took me 5 minutes to get there from 198 with just revving the engine. I'm not too worried now but it appears that they are running. Was just used to high-speed fan when i had the old ATX 2.5...never even noticed the low one.Cooling=ok __________________ 99' Black Cougar MTX+3L Swap By Aircougar Performance 14.68 @ 96mph Time for Torsen

04-21-2008, 05:03 PM	#9 (permalink)
bensenvill 5% Nation of Join Date: Aug 2003 Location: Chicago Posts: 12,645 Blog Entries: 4	Re: 3L W/o AC=No Cooling Fans lol, good to hear, I was convinced mine were broken for years because I have never once heard them turn on [until I dropped in an svt radiator and had to make sure the lines were filled] __________________ 1994 Lincoln Towncar w/ 112576 1996 Contour SE MTX loaded w/ 134592 1999 Silver Frost ATX original owner w/ 70049 [in storage] Highway: noun, \ˈhī-ˌwā\ A public roadway consisting of a series of moving chicanes.

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