oh na sorry maybe i didnt read properly mine wouldnt idle at all

 

Well, first issue found. Alternator was done for. All the problems would seem to have come from that. As far as the no boost..hopefully it was a limp mode thing and didn't get something.

 

so does the car runs fine now?

 

our 01 996tt did this same thing, it ended up being we swapped the battery and didn't program whatever it needed to be, and the alternator died or some crap.....

 

i've swapped batteries and alternators and never had to program anything at all. do you know what it is that you might have or thought you needed to "program". simple in out for me every time. an '03 MY.

 

Don't have the alternator yet. Tomorrow

 

Well, new battery and alt started and idled great, then amps started fluctuating again from 11-14.5.

 

is it even possible this is some kind of an amp gauge version of the oil sender unit going whacked?! i mean if the car now runs properly? or does it...

 

Thinking the same thing and gauge might of taken a hit with over charge which with hot battery etc did really happen. Check or have output checked with meter.

 

The car started and idled perfect. It was cold, so once the rmps came down a bit it started fluctuating. I know it wasn't just the gauge because the interior lights were dimming. I just checked every ground. All the starter and engine grounds are solid. I couldn't really see where it connected to the engine because it's deep in there, but it was tight.

I didn't drive it so I don't know if the boost is back. I didn't want to fry another all and battery. The volts were at 14 at idle.

 

Hate to say it but sounds like the alternator. Recheck your connections at alternator.

 

New or reman alternator? Might be a dud

 

I made sure the wire was tight as possible and the clip was in. It was a rebuilt.

 

dude, pls say it wasn't a rebuilt. next! ( sorry )
have told you ( for what its worth ) never mess w rebuilt on THIS car!! trouble in dodge. could *some* work?! sure, but most fail.
these are voltage HOGS. GL tho

 

Yes. Rebuild, and autozone special!!