Fast69Mopar
Senior Member
You would be thinking correctly that the oxygen sensors are different between the 3.7 and the 4.7.Well, I have some good freakin' news; the new (replacement) wiring harness worked! I now have a running/driving truck with a 4.7L conversion. Really happy about that. I gotta admit though - I'm am utterly *perplexed* by what the issue really was between the two harnesses. Based on the pin-out diagrams, the *only* differences are the '05 has knock sensors and the '04 doesn't.
The new harness also corrected the issue with the gauges as well - all working and good to go.
Now the bad; which really isn't *that* bad - simply because now I am actually able to check the for them - is that I have several DTCs and a blinking ABS light that I'm going to need to sort out.
P0068 - MAP/MAF Throttle Position Correlation
All four o2 sensor codes:
- I think this is the reason that I'm getting a high-idle, about 2,000rpm
Honestly, I could use some help on these - I've never seen all four go at once before...
- P0135 - Bank 1, Sensor 1
- P0141 - Bank 1, Sensor 2
- P0155 - Bank 2, Sensor 1
- P0161 - Bank 2, Sensor 2
Then I have:
All that said, I'm pretty damn ecstatic to have the truck running and driving. I even got it out on the road and the did the "seating of the rings" procedure, as per the Haynes manual (for what that's worth).
- P0175 - System too rich Bank 2, which is probably related to the P0068 code, I'd imagine.
*Edit* I should note that I'm still running all four of the O2 sensors that came in the truck when equipped with the 3.7L. It hadn't occurred to me that they could be different from the 3.7L & the 4.7L or even between years until I started having the issues with the '05 harness/'04 PCM. Now I'm thinking it may, well cross reference the part no's tomorrow.
If my memory serves me right the 3.7 oxygen sensors are 56029049AA for the upstream and 56028994AB.
Now that you have a 4.7 the upstream and downstream oxygen sensors should be 56028998AB.