This is something I posted on the DML a while back that didn't generate any comments. I'm wondering how many people are running with this wiring error that is wearing out their cooling fans needlessly. __________________________________________ Tom & I discovered another apparently stupid mistake that the factory made in our cars. If you use the fan fail bypass and depending on the type of cooling fan relay you use, you will have either of these two situations: Situation 1) The fans slowly coast to a stop, and the fan fail light dims gradually. This means that you have a single throw relay controlling the cooling fans. When off, the only load left on the fans is the fan fail light which glows under the power generated by the fans themselves. When cruising at highway speeds, you may see the fan fail light glow dimly from the voltage generated by the fans as air blows past them. Situation 2) The fans quickly stop, and the fan fail light turns off immediately. This means that you have a double throw relay controlling the cooling fans. When the fans are not switched on, they are shorted by this relay. What's up with this? It puts unnecessary wear & tear on the cooling fans and restricts air movement through the radiator. If you cut or break off the 87A spade lug (the center one) on the cooling fan relay then the fans can spin down gently without a short circuit across the brushes. Of course this depends on the relay. Some relays already have this spade lug missing. If it really matters, then why did the factory put a ground at 87A? Walt Tampa, FL To unsubscribe from this group, send an email to: DMCForum-unsubscribe@xxxxxxxxxxxxxxx Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
<<attachment: winmail.dat>>
Back to the Home of PROJECT VIXEN