I give up. What Model year Mustang are we dealing with?
Do you think that maybe the DTC codes have something to do with the lack of performance?
IMO the DTC code that should be attacked first is the P0340. Anytime the PCM calls out a "circuit malfunction" think there's something so wrong with the circuit that the PCM is unable to perform trouble shooting. One of the first things to look for is a wiring harness fault.
But.....it happens that sometimes a bad alternator diode can "cause" a false bad cam sensor signal. For this reason I always suggest starting every trouble shooting session with a review of the battery and charging system.
>>>From Ford manual P0340 - Camshaft Position (CMP) Sensor Circuit Malfunction
The test fails when the PCM can no longer detect the signal from the CMP sensor.
CMP circuit open
CMP circuit short to GND
CMP circuit short to PWR
SIG RTN open (VR sensor)
CMP GND open (Hall effect sensor)
CMP misinstalled (Hall effect sensor)
Damaged CMP sensor shielding
Damaged CMP sensor
Harness routing, harness alterations, improper shielding, or electrical interference from other improperly functioning systems may have intermittent impact on the CMP signal
Is the wiring thing the alternator check? I haven't looked at it other than that I've been busy with school and work.
I figured out it's the transmission, if I turn off overdrive it works fine. So I checked the fluid and it was a little low, added fluid and now it is running fine. I will have to save up some money since I think the transmission might be on its way out. I'd rather fix this car then get another one that has an unknown history.
I'm debating on doing a fluid change or leaving it as is since I've heard it is bad to do it on transmissions with a lot of miles.
Well, it wasn't that low, but barely any was on the stick. I imagine the transmission being on it's way out now after 20 some years is not uncommon, so I am saving up to have it serviced (rebuilt or replaced, probably rebuilt cause $$$)