Primered

iTrader: (2)

This problem has started the last few weeks and has continued to get worse daily it seems. The car starts and runs just fine but if I drive on the hwy for 20 mins or more and then come to a stop the rpm's drop lower and lower and it dies. While they are dropping and I give it gas it will not rev at all most of the time or will try but feels like it's missing and running on just a few cylinders. After it dies it will sometimes start but idle low and will not rev at all. If I let it set for 5 mins or more sometimes it will restart and run fine but eventually go through all that again. I have driven it the last couple of days and it hasn't died but the rpm's will drop down and raise and has a hesitation when taking off at times also. Checked the alternator, it showed 14+ volts but would very slowly go down. Checked the alternator amps and they showed 16 on startup and 4 at most at idle so I swapped the alternator tonight, a buddy had a newly rebuilt one from pep boys, but it still has the same problem. The pep boys one showed around 18-20 amps at idle this time and the battery stayed at 14+ volts at idle. Swapped the battery just for the hell of it and it didn't change anything. When running I put on the headlights and a/c and the car died, restarted fine though.

Any ideas?