Fluctuating idle 2.7 manual

Yes unlike the days of yore the voltage regulator is built into the alternator. Back in my younger days the voltage regulator was a separate component.

 

Thanks for updating this thread OP, I wish more TW members would do the same when making a thread.

I may be having the same problem, would there be any way of rebuilding the OEM alternator by buying a replacement voltage regulator? OEM alternators are so expensive that if replacing parts is possible it would save a lot of money. I say this after watching "Timmy the Toolman" replace the bushings in a failing alternator on his YouTube Channel and looked very simple.

 

Usually unless you have a connection for the parts you will find that they are too expensive or hard to get.

 

noce post/thread! I am glad the overall problem was corrected and thatvyou let us all know what the fix was.

I just hit 170k miles and will tuck this bit of info away for later.

 

That was a route I wanted to take, but they aren't separate, and the parts aren't readily available to a carport mechanic like me. Just another way for us to spend more money in the name of simplicity.

The Denso I bought is going strong still with close to 15k on it. Rockauto.com has them for ~$130 plus a $70 core charge, not too bad for a quality non-OEM replacement.

 

OK, Thanks for that information.

 

I put a "new" (reman) alternator in the other night. No change. I think these autozone alternator's are garbage. I know this is my issues because if i unplug the alternator while the truck is running, it runs very smooth with no idle fluctuating at all.

 

I did the prior. I took the whole thing off and cleaned it very thoroughly. I have cleaned the MAF, replaced the PCV, new (reman) alternator as mentioned, seafoam treatment, ive checked for a bad ground, ive checked for vacuum leaks. nothing. the only thing that makes a difference with the idle is unplugging the alternator. unplug it and it runs like its brand new.

 

Crappy remanufactured alternators really suck. Most of these places remanufactured = dusted off cleaned and placed back in a box to resell.

 

I replaced my alternator yet again with a Reman denso, (i guess they dont sell new ones???) Now my truck runs perfect. except the battery light comes on occationally!!! Im getting so sick of this BS lol time to go bitch at Autozone.