P0301 and P0306

[JasonRedwood]

I posted this on 4runner.org but wanted to see if any of the expo community had any input.

1997 4runner v6 4x4 auto threw P0301 and P0306.
Recently replaced(at separate times);
#3 Coil (1 year ago)
#1 Coil (with in the last 6 weeks)
#6 Time Sert along w/ Plugs and wires (with in the last 4 weeks)
#4 injector (with in the last 4 weeks)

Now throwing 0301 and 0306
From what I read the next step is to pick up a digital mutli-reader to check fuel injectors. Is there anything else I could be checking while the intake Plenum is off. New Plenum gaskets last time I did the #4 injector.

Are all these issues coming up with in the last 1.5 months coincidence or could there be something going on like an old fuel filter or something causing the problem?

Someone suggested getting a compression check before I dive into checking the injectors.

 

[tonkaman]

I had a similar ghost in my Tacoma. It only happened when my engine would create too much heat under the hood though. I replaced every part I could imagine without any luck. It wasn't until I had to swap a head gasket that the problem was found. There was damage to the wire harness that was giving mixed signals to several of the sensors under the hood.

Hopefully you don't have to dig as deep as I did. Good luck

 

[JasonRedwood]

I had a similar ghost in my Tacoma. It only happened when my engine would create too much heat under the hood though. I replaced every part I could imagine without any luck. It wasn't until I had to swap a head gasket that the problem was found. There was damage to the wire harness that was giving mixed signals to several of the sensors under the hood.

Hopefully you don't have to dig as deep as I did. Good luck

Sheeeesh Good to know tho. Thanks