94n2boost

OK, a little history 1st, changed out the timing chains, cam and crank gears, tensioners and guides about 2K ago. Now I am getting a P0021, no big deal and cam bad sensor. Changed out both sensors, still the same. OK purchased both VCT solenoids from the dealer and changed out, NOPE still have the code. Hope and a prayer changed out the oil and filter. reset the codes and within 10 miles check engine light again, same code P0021. I don't get it, engine runs great, just the check engine light.

2004 Truck with the 5.4 and 127K

Mod (Ret.)

Wiring connector(s) to sensors...has this been checked?

94n2boost

Yes , checked the connectors to the sensors and the VCT solenoids