Ready to junk it!!!

I've been getting a P0138, figured it was because of a Bosch sensor, so I did the research and got an OEM original equipment Delphi ES20046, still got the P0138. The engine seems to have a misfire kinda like a tiny vacuum leak, which I can't find one. 47psi fuel pressure, newer plat plugs. And I often get a P1740, but I can feel the tranny shifting. I'm seriously pressed for time, it needs e checked this month and I go in for surgery this Thurs 9/8 morning. Oh, and this is a VAN that makes it really fun to work on!

dondale13 said:

I've been getting a P0138, figured it was because of a Bosch sensor, so I did the research and got an OEM original equipment Delphi ES20046, still got the P0138. The engine seems to have a misfire kinda like a tiny vacuum leak, which I can't find one. 47psi fuel pressure, newer plat plugs. And I often get a P1740, but I can feel the tranny shifting. I'm seriously pressed for time, it needs e checked this month and I go in for surgery this Thurs 9/8 morning. Oh, and this is a VAN that makes it really fun to work on!

Click to expand...

The second code may be related to a service bulletin for the 00-01 models. TSB21-11-00. Something about replacing the pressure boost valve cover in the tranny. I'm not sure on that repair as the cutoff date is 08/01/00. After that, the problem was fixed. My guess would be that could cause it, or the TC solenoid may be going bad.

The first code can be caused by one of three things. Too much fuel, in which case the sensor is operating properly, but this is rare on a stock build. Or either the sensor is bad, or the signal wire is shorted to battery positive. A lot of people on here have problems with O2 sensors. Generally these vehicles like the NGK (NTK? it always confuses me). My truck hates the bosch and delphi sensors on the upstream (Yay for no emissions state, I just say butt **** it to the downstream o2s) I could imagine the same is true for the downstream.

Since I hate throwing parts, you can test to see if the signal wire is shorted to battery positive by taking a multimeter and measuring the sensor wire on the vehicle connector of the offending sensor.

Do you have california emissions?

The Platinum plugs run way too hot for the older Hemi's, I believe it's the same with the newer ones.. Could be one reason.. If you can, stick with the copper plugs and stay in the manufacture suggested heat range.

Dudeman2009, that bulletin may be on to it, I have found 'build stickers' that have '4/2000'. Highly possible! I just had the tranny rebuilt, planetary gears went, the fluid looks like it was put in yesterday!
I'll crawl back under it with my meter after this sun drops a bit! I'm outside in a driveway and the sun is having its way with me!
I have Fed Emissions, Thank God!

07MegaCabRam said:

The Platinum plugs run way too hot for the older Hemi's, I believe it's the same with the newer ones.. Could be one reason.. If you can, stick with the copper plugs and stay in the manufacture suggested heat range.

Click to expand...

You've gotta be on to something! I just pulled the wires off the dist one at a time and the #6 cyl was firing about one out of ten times. I goin to the parts store, new wires n original equipment plugs!