I've was struggling with the P0344 code for a while. No obvious damage.to the cam itself. I tried all of the recommended fixes (except cam/timing chain/PCM replacement) with no luck so I decided to start from square one. The two most common recommended fixes were electrical issues or the air gap. I tried 3 different sensors...Crown, Napa and AIP...none out of the box solved. It did not have the original MOPAR sensor in it.
I took it to a "Jeep" shop to verify my diagnosis that there were no electrical/wire issues. This was confirmed and they put it on the scanner with the Napa
It ran without the code for about 250 miles. It threw the code again so I took it back and asked them to put it on the scanner with the Crown. Same result....250 miles before throwing the code.
I figure if it's running for a while the air gap is the next most likely culprit. I experimented different sensors and washer combos. The washer that came with the Crown OPDA, a few washers of varied increased thickness and no washer at all. Nothing worked with the Crown. I hit paydirt with the AIP and no washer at all. Since this seemed to work I didn't move on to the NAPA. Less of a gap is contrary to the more of a gap fix
It's been running good for 350 miles now....keeping fingers crossed. I read a few instances of the AIP working out of the box. It could be dumb luck that the the AIP worked. I noticed that all 3 sensors have a small blue paint dot (all same color) near the bolt hole area so I'm assuming that they are from the same manufacturer but with a different name on the box. It could be an indicator of quality control issues and tolerances in production. It's still just a short term success and not long enough to claim victory yet. But it is the longest I've gone without the code.
I took it to a "Jeep" shop to verify my diagnosis that there were no electrical/wire issues. This was confirmed and they put it on the scanner with the Napa
It ran without the code for about 250 miles. It threw the code again so I took it back and asked them to put it on the scanner with the Crown. Same result....250 miles before throwing the code.
I figure if it's running for a while the air gap is the next most likely culprit. I experimented different sensors and washer combos. The washer that came with the Crown OPDA, a few washers of varied increased thickness and no washer at all. Nothing worked with the Crown. I hit paydirt with the AIP and no washer at all. Since this seemed to work I didn't move on to the NAPA. Less of a gap is contrary to the more of a gap fix
It's been running good for 350 miles now....keeping fingers crossed. I read a few instances of the AIP working out of the box. It could be dumb luck that the the AIP worked. I noticed that all 3 sensors have a small blue paint dot (all same color) near the bolt hole area so I'm assuming that they are from the same manufacturer but with a different name on the box. It could be an indicator of quality control issues and tolerances in production. It's still just a short term success and not long enough to claim victory yet. But it is the longest I've gone without the code.
