hi, my 2007 impala engine3.9 was rebuild completely due to misfire, but the computer still reads the same old codes and the check engine still on can it be it needs new computer also the rpm is not at 900rpm
This may be a "Captain Obvious" question, but I'm going to ask it: Did anyone actually clear the codes with a scan tool?
As an ancillary question, are these active, pending or historical codes?
If the misfire is being reported on a specific cylinder or cylinders try moving the coils to other cylinders and see if the misfire travels with the coil. If so, you have a bad coil. Also check condition of spark plugs.
Having an engine rebuilt isn't cheap.
I'm making an assumption here, but what did the shop/person say who rebuilt the engine?
Do you have a warranty for the work performed? If you do they should make it right.
rebuilt a 2007 impala 3.9 engine it had a misfire but after rebuilt it still reads the same codes and the check engine light still on can it be the ecu?
what codes?
Rebuild isn't the usual solution for a misfire. What was REALLY the problem?
