so i got this rough idle going on......i got it diagnosed it says misfire on cylinder 3. bad ECG valve.

my question is where is this thing? and how to i replace it? i looked at autozone and couldnt find an "ECG" valve.

some help would be awsome..

1997 F150 4.6L auto trans 136k on the clock so far.

thanks for the help in advance!!

 

Never heard of that one? There's and EGR valve, but No code for it directly. Closest would be a PO402. There's an ECT sensor. Other than that, you got me? Post when you find out what it is.

The misfire is most likley a PO303, - which is usually ignition related = plug,wire,boot or coil.

 

ya cylinder #3 is dead. i will check on it. ill keep you posted bro..thanks for help