Cooling fan operation - F-Body Road Racing and Autocross Forums

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Jon A View Member Profile	Jun 1 2004, 08:01 AM Post #2
Experienced Member Group: Advanced Members Posts: 1,947 Joined: 23-December 03 From: Everett, WA Member No.: 16	It's a wiring issue. The 96-up cars are wired differently and have three fan relays in the fusebox. I think when the PCM commands Fan #1 the wiring runs both fans in series, and when the PCM commands Fans #1 & #2 they run in parallel. In any case, I'm running an old OBD1 PCM and it has no idea I have the newer fans but they operate the same as they did with my stock PCM. Changing the fans themselves wouldn't change how they operate since they plug in separately. However, some initial digging has shown the 96-up cars have a different part number for the fan motors themselves. They might be higher power. All I know right now is they are different.

Posts in this topic

94bird Cooling fan operation May 31 2004, 06:32 AM

Jon A On your '94 you have one fan that kicks on fir... May 31 2004, 06:56 AM

94bird I've decided to modify my testing at the track... May 31 2004, 01:48 PM

rmackintosh Mike, I tried removing one fan and both when my ca... May 31 2004, 06:22 PM

94bird I'm quite surprised that with the BeCool radia... May 31 2004, 10:15 PM

Jon A I wonder if there isn't something else going o... Jun 1 2004, 01:15 AM

94bird I started looking at my shrouds more over the past... Jun 1 2004, 03:03 AM

#07 QUOTE (Jon A @ May 31 2004, 07:15 PM)Have you... Jun 1 2004, 03:09 AM

94bird Tony, some foam works great to seal up the gap and... Jun 1 2004, 03:25 AM

rmackintosh QUOTE Have you guys who have taken it out really s... Jun 1 2004, 04:12 AM

Jon A Keep in the weather in mind. I did see a bit over... Jun 1 2004, 04:56 AM

#07 QUOTE (#07 @ May 31 2004, 09:09 PM)I was amaz... Jun 1 2004, 05:23 AM

rmackintosh QUOTE I wonder if on the stock 94 fan set-up if yo... Jun 1 2004, 06:03 AM

Jon A It's a wiring issue. The 96-up cars are wired... Jun 1 2004, 08:01 AM

94bird I found a Hayden slimline fan 16" in diameter... Jun 1 2004, 05:55 PM

94bird QUOTE (rmackintosh @ Jun 1 2004, 12:12 AM)QUO... Jun 1 2004, 05:57 PM

94bird I measured the size of my plastic deflector that d... Jun 1 2004, 11:24 PM

robz71lm7 QUOTE (Jon A @ May 31 2004, 02:56 AM)On your ... Jun 1 2004, 11:58 PM

94bird From Shoebox's site: There are two versions o... Jun 2 2004, 12:33 AM

ESPCamaro What setup did the 93 cars have. I thought that th... Jun 2 2004, 02:07 AM

94bird Each fan weighs 5.5 lbs., with the total assy of 2... Jun 2 2004, 02:16 AM

ESPCamaro Really?!! They feel much heavier. Or did ... Jun 2 2004, 02:22 AM

Soma07 I believe the V6 cars had a single fan but the sam... Jun 2 2004, 02:53 AM

#07 QUOTE (94bird @ Jun 1 2004, 06:33 PM)By addin... Jun 2 2004, 02:55 AM

94bird I believe the wiring would also have to be updated... Jun 2 2004, 02:58 AM

#07 QUOTE (Soma07 @ Jun 1 2004, 08:53 PM)I believ... Jun 2 2004, 03:05 AM

#07 QUOTE (94bird @ Jun 1 2004, 08:58 PM)I believ... Jun 2 2004, 03:08 AM

rmackintosh Mike... My front breather opening is 3 1/2 tall b... Jun 2 2004, 03:23 AM

CMC#5 See, that was my impression also, that fans don... Jun 2 2004, 03:59 AM

Jon A Interesting, guys. I didn't know they made th... Jun 2 2004, 07:31 PM

Sam Strano QUOTE (rmackintosh @ May 31 2004, 10:12 PM)I ... Jun 2 2004, 08:37 PM

rmackintosh QUOTE (sam@stranoparts.com @ Jun 2 2004, 02:3... Jun 2 2004, 10:10 PM

94bird Jon, your last post is right along the lines of wh... Jun 3 2004, 01:18 AM

94bird Well, I got myself motivated and am making my car ... Jun 5 2004, 04:48 AM

#07 Sounds really cool,Makes me want to do this too. L... Jun 6 2004, 06:53 PM

94bird I've blocked off the air flow from the black p... Jun 6 2004, 08:00 PM

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94bird View Member Profile	May 31 2004, 06:32 AM Post #1
Insert catch phrase here Group: Advanced Members Posts: 2,098 Joined: 23-December 03 From: Michigan Member No.: 20	Are the fans in series in our LT1 engines? Can I remove one of them and still have one working fan? I'm in the middle of doing a few things on the car and the engine isn't running so I'm hoping someone knows before I reinstall everything.