I have a 1991 Dodge Daytona which I just put a new motor in. I had it idling for a few seconds with the idle going up to 2500 rpms down to about 300 and back up then it dies. Well now it won't idle at all and I check fault codes, and theres 6.
11 = No ignition reference signal during cranking OR timing belt skipped teeth or loss crankshaft position sensor.
12 = battery or computer recently disconnected.
15 = No speed/distance signal
24 = Throttle position sensor over 4.96V
25 = Automatic Idle Speed motor driver circuit shorted OR target idle not reached OR vaccuum leak found
41 = Alternator field control circuit open or shorted
55 = end of codes
You ve replaced the engine on it
Check all the wiring and connections check the dist
And make sure the TPS sensor not stuck at WOT
That will stop the fuel to the engine
Reset the ECM and try again