I had my automatic transmission rebuilt at a local AAMCO 3 months ago.
My car was running okay, but I felt some vibration around 2,200 RPMs intermittently since then.
Since the mechanic told me the new transmission might need ‘break-in-period’, I just took it as-is.
After a week or so, however, it started stalling when the engine temp went up to the normal working temperature and it was throwing CEL, vdc off, slip (P0340 per scan)
On top of vibration issue, I hear squealing noise from belt area when P0340 just comes on.
I replaced 2 cam shaft position sensors and a crankshaft position sensor.
In order to check whether any of the wires had an issue, I tried to start the car with each sensor disconnected.
Car could start without cam sensors but the p0340 code was pulled right away. (When sensors were plugged, p0340 came on after the temp went up)
Car could not start without crank sensor at all. (When connected, P0340 came on when the temperature went up)
Thus, I assumed that all the wirings are at least sending/receiving signals.
Battery is new, and I replaced MAF.
What should I check or replace now?
Alternator signal needs to be checked with oscilloscope scanner like some experts say on YouTube.
Or do I have to replace crankshaft sensor with genuine part or the one that does not need to be relearned or programmed?
Any advice will be appreciated!
My car was running okay, but I felt some vibration around 2,200 RPMs intermittently since then.
Since the mechanic told me the new transmission might need ‘break-in-period’, I just took it as-is.
After a week or so, however, it started stalling when the engine temp went up to the normal working temperature and it was throwing CEL, vdc off, slip (P0340 per scan)
On top of vibration issue, I hear squealing noise from belt area when P0340 just comes on.
I replaced 2 cam shaft position sensors and a crankshaft position sensor.
In order to check whether any of the wires had an issue, I tried to start the car with each sensor disconnected.
Car could start without cam sensors but the p0340 code was pulled right away. (When sensors were plugged, p0340 came on after the temp went up)
Car could not start without crank sensor at all. (When connected, P0340 came on when the temperature went up)
Thus, I assumed that all the wirings are at least sending/receiving signals.
Battery is new, and I replaced MAF.
What should I check or replace now?
Alternator signal needs to be checked with oscilloscope scanner like some experts say on YouTube.
Or do I have to replace crankshaft sensor with genuine part or the one that does not need to be relearned or programmed?
Any advice will be appreciated!
Feb 20, 2023 at 5:47 PM
