Why is my truck hesitating and vibrating? on 2001 Dodge Ram 1500

Had a head job done, replace the #8 injector, have good fuel pressure, replaced fouled spark plugs, drained foul gas from tank, replaced battery, charging system is good. Misses really bad, not shifting properly, after it warms up a little, it want stay running. Keeps throwing code po208 at me. Every now and then it alternates to 1 or 4. Any suggestions?

by in Silsbee, TX on September 19, 2012
2 answers 3 comments
ANSWER by on September 19, 2012
what is the compression on affected cyl's
COMMENT by on September 19, 2012
120 psi
COMMENT by on September 20, 2012
you have an inj hareness wiring issue. buy a noid light and ck for inj pulue at each inj. while ck'ing pulse wiggle the inj hareness while watching noid light to verify you don't loose pulse. i think you will a bad wire
ANSWER by on September 20, 2012
If you replaced an injector you should scan test to see if injector is working i
COMMENT by on September 20, 2012
I done the light test and they are all working properly. I reset the check engine light and cranked it up to run til the light came on again within minutes. Now I have the same code that came on before the head job. Po172, po442, po445 with the same symptoms.

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