To Hyper-tech or not to Hyper-tech?
Thread Starter
Burning Brakes
Joined: Nov 2011
Posts: 841
Likes: 1
I changed that switch with a 195, that seems to be a little misleading because as far as I know the aux. fan isn't controlled by the ECM but only by that switch. The primary is controlled by the ecm in conjunction with the coolant temp-switch on the manifold, so I'm a little confused by that ad. I'd like someone else to chime in on this.
Last edited by caddyboy84; May 22, 2012 at 09:27 PM.
Team Owner
Joined: Dec 2000
Posts: 21,094
Likes: 282
From: Phila., PA burbs
I changed that switch with a 195, that seems to be a little misleading because as far as I know the aux. fan isn't controlled by the ECM but only by that switch. The primary is controlled by the ecm in conjunction with the coolant temp-switch on the manifold, so I'm a little confused by that ad. I'd like someone else to chime in on this.
Thread Starter
Burning Brakes
Joined: Nov 2011
Posts: 841
Likes: 1
When I put this switch in my 91 10 years ago I wired it to the aux fan relay and then jumpered it to the other (or maybe vice versa). Both fans come on at 200 and off at 185. Any one of these kits will explain it well. Search "low temp fan switch" on the forum and I'm sure you'll come up with a ton of threads.
I have a wire schematic for what you're talking about here, but I really don't want to do that. I really don't like altering a car like that, though I did consider it (I did download the diagram from Corvettecentral.com). I think after getting very much feed-back about this, that I'm gonna burn a chip so I can have what I wanna have, fan temp, no VATS, EGR delete if I want, ect.
Pro
Joined: Sep 2008
Posts: 694
Likes: 27
From: St James New York
Hypertech ECM Chip
Thanks. I'm gonna pick-up the chip this week. Hyper gave me a Summit quote of $201.95 without the stat or switch, is that around the norm, or is there better deals out there? I mean the switch and the stat I can get local kinda cheap, so those parts are no biggie, but if the chip is out there cheaper, I'm on board. Know of anyone selling an un-needed Hypertech # 128882, I'm such a "cheapskate" sometimes.Hypertech part # 128882
PM me if your interested!
Last edited by mako41; Aug 8, 2012 at 05:18 PM.
Instructor
Joined: Nov 2011
Posts: 183
Likes: 0
hypertech sells a low temp fan switch install that and a 160 degree thermostat contact jegs pn 533 4026 for the switch ive done quite of bit of ecm chip install used hypertec many times had 2 f body cars with them fact is the lock up converter apply speed was improved and the fans came in earlier and my 91 ta would go past 126mph as far as performance increase from the engine nothing really had a 86 iroc that woke up from it more than normal it must of had something in the stock program wrong never seen a increase on any other like the gain from that one but do the switch and thermo
Thread Starter
Burning Brakes
Joined: Nov 2011
Posts: 841
Likes: 1
hypertech sells a low temp fan switch install that and a 160 degree thermostat contact jegs pn 533 4026 for the switch ive done quite of bit of ecm chip install used hypertec many times had 2 f body cars with them fact is the lock up converter apply speed was improved and the fans came in earlier and my 91 ta would go past 126mph as far as performance increase from the engine nothing really had a 86 iroc that woke up from it more than normal it must of had something in the stock program wrong never seen a increase on any other like the gain from that one but do the switch and thermo
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