Originally Posted by measlick
Thanks! I noticed on our rescue when you set the emergency break (pedal) the rescue runs in high idle. I haven't asked anyone how this was done, this may be a bit extreme in my case. I didn't know running AC runs the fans, that'* good to know although I thought having AC on in hot weather was a no/no while idling.
I will definitly check on getting the sensor changed, that I think would help.
Update: I should note my lights mostly consist of LEDs and are very low amperage. My OH does have 2 strobes and I do have wig/wags so at the most those two items would be the most draining.
Yeah, if you just let the car idle with the A/C off, the temp gets too high (for my taste) before the PCM commands the fans come on. That'* not good for the engine or trans, as the trans fluid is cooled by a cooler in the passenger side radiator tank. On this car with stock programming, I'd run the A/C at idle if the car was stock, as long as the outside temp was above freezing. The PCM must be reprogrammed to change the temp at which the fans come on otherwise.
I think I'd do the manual fan switch. You can buy one here:
although it'* for a Grand Prix. A search in the 2000-2005 section shows that it was installed on a Bonneville successfully.
As far as amperage, if you have the headlights, wig-wags on the high beams, OH lights, etc AND both fans running as they should be, you're taxing the system pretty heavily at 800rpm idle. I do think the cooling is the bigger of your concerns, though.