Bad pcm?
Ok guys I have a 2000 f250 5.4 2v triton long story short I bought this truck thinking it would be a quick fix but I'm finding out otherwise using a snap on scanner the monitoring shows the pcm making the right bank run -25 and the left bank 20 I have replaced all plugs with motorcraft and gapped to .56 it has new COPS and I also pulled the injectors to check to see if they were stuck open they weren't I've fixed intake leaks and vacuum leaks I have 35 psi fuel pressure it has a new crank sensor and cam sensor I've cleaned the IAC and the throttle body and the MAF sensor the engine is literally running on 4 cylinders I can unplug the injectors on the right bank and perform a KOER test and it shows righ bank running rich I tested the O2 sensors and they were faulty but with new bosch sensors i have no change in result the only thing left is the knock sensor or the PCM I have no pending codes and the only memory codes were #4 cylinder misfire I need some help I'm a heavy equipment mechanic not auto lol
|
Please reread your post and correct accordingly. Once you check it you should find what I believe is an error. Thanks
|
Originally Posted by hanky
(Post 98275)
Please reread your post and correct accordingly. Once you check it you should find what I believe is an error. Thanks
|
Originally Posted by hanky
(Post 98275)
Please reread your post and correct accordingly. Once you check it you should find what I believe is an error. Thanks
|
What are the readings for the oxygen sensors?
If someone else worked on the vehicle earlier could they have switched the sensor plugs? A little more investigating as to just what the PCM is seeing/receiving may shed some light on just what is going on. Can you post some of the data? |
Originally Posted by hanky
(Post 98279)
What are the readings for the oxygen sensors?
If someone else worked on the vehicle earlier could they have switched the sensor plugs? A little more investigating as to just what the PCM is seeing/receiving may shed some light on just what is going on. Can you post some of the data? |
You might try creating a big vacuum leak and see if the sensors respond.
|
Originally Posted by hanky
(Post 98284)
You might try creating a big vacuum leak and see if the sensors respond.
|
All times are GMT -5. The time now is 02:08 AM. |
© 2024 MH Sub I, LLC dba Internet Brands