I have a U-pulley on my RT and I want to keep it. I also want to return my alternator to it's OEM rpms. Does anyone have a part# for a pulley I could put on my alternator that would do the job?
Thanks, bro. That is some good information. I guess an alternator upgrade should be on my "to-do" list.Not really.
The output of the alternator is controlled by the pcm, not the alternator. The stock alternators are capable of 17 volts and about 80 amps if the pcm allows for it. Now sitting at idle is extremely hard on the alternator. With the a/c on its under the most load it can be under at the lowest engine speed. the pcm will only allow for so much output at idle so as to not burn up the brushes and windings in the alternator. You could put a smaller pulley on but that will make no difference since the pcm will only allow x amount of voltage from the alternator anyway. In most cicumstances ( dont know bout the chargers) but their are higher output alternators put on police packages normally which is what i would check out if i was you.
I would also look into getting some heat shields for your cats. Cats can get to 600 degrees quite easily and the only way they cool is by air flow under the vehicle. Now the cop processors have a slightly different setting for idle so as to reduce fuel use which will help keep the cats cool which your car also doesnt have. Since you dont have the ability to put the cop processor in you need to look into heat shields prior to your floor boards melting (anyone with a crown vic police interceptor ) knows what i mean.
Sitting at idle is the hardest thing to do on the car. Youheat the tranny fluid, oil, and exhaust and without the proper programming you can really accelerate the life of a lot of the parts.
You don't need to get that radical with the RPM change. Just feather the gas and ease up the RPM's until the voltage reading is good. That is where you can set the idle if it isn't way too high. I wouldn't go more than 100 RPM's over stock (stock is about 600).I have EVIC and a Predator. I did read the voltages earlier but I forgot what they were. When I was having issues I remember the voltage being at 11.4v. I'll mess with a little and try boosting the idle 500 rpms. I'll post my findings.