Sounds good Anthony. That's how I end up setting the base idle on some cars (especially automatics) myself - load it up with every accessory and the lowest hot-idle you normally see, and adjust away.
I'd note that if you have any amount of IAC duty cycle while making the adjustment, the idle might wander back towards the commanded idle eventually. I end up setting the hot, loaded idle (AC off) with the IAC disconnected sometimes, as the idle really cant go lower afterwards (the computer can increase IAC Duty cycle to raise the idle, but cant lower the idle if the IAC has zero Duty Cycle).
I'm sure you considered it, but O/Ding the alternator is another alternative.
Good luck.
I'd note that if you have any amount of IAC duty cycle while making the adjustment, the idle might wander back towards the commanded idle eventually. I end up setting the hot, loaded idle (AC off) with the IAC disconnected sometimes, as the idle really cant go lower afterwards (the computer can increase IAC Duty cycle to raise the idle, but cant lower the idle if the IAC has zero Duty Cycle).
I'm sure you considered it, but O/Ding the alternator is another alternative.
Good luck.
you can buy them from most companies that make alternators, or i noticed some rebuilt alternators at the junkyard (on crown vic 5.0's and such) have smaller pulleys. i dont know why, but measure the diameter of yours, and then you will know you need something smaller. i dont know if i still have one, i will take a pic later if i have it.
ASP and FFI both sell pulleys (amongst others). The prices on FFI (FordFuelInjection.com) look pretty good to me. When I was farting around with low idle and charge issues on the '94, I almost went with their OD pulley. Just crunch numbers to make sure you stay under the recommended alternator speed (16,000 RPM IIRC). I don't know what your crank pulley's size is, so I didn't want to assume anything.
The idle bump will probably take care of the issue, but it's nice to have alternative (like OD'ing the alt) ready to implement if needed.
Good luck.
The idle bump will probably take care of the issue, but it's nice to have alternative (like OD'ing the alt) ready to implement if needed.
Good luck.
I'd let the car warm up. Then disconnect the IAC and get it to idle decently (do not have the AC on and do not turn the steering wheel - those items *should* require IAC assistance).glowstang93 said:
The idea is that with the IAC disconnected, the idle will not be able to go lower than where you manually set it at that time. Then when you reconnect the IAC, it might change the setting a bit, but it also again provides the compensation for AC, Power steering, etc.
Good luck.
A vac leak might have lead to the diminished idle in the first place. No amount of playing with the idle could make up for the issue.
A stockish 5.0 sees about 18-20" hg of vac at idle, but I don't know about your engine. It should be close to that in any case. I'd take a looksie.
Good luck bud.
A stockish 5.0 sees about 18-20" hg of vac at idle, but I don't know about your engine. It should be close to that in any case. I'd take a looksie.
Good luck bud.
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