O2 sensor code 21
Administrator
Joined: Apr 2010
Posts: 87,556
Likes: 4,230
From: Clayton MI
Snap-On MTG2500 would be able to do data logging. (and graphing....) It is OBDI capable. (and they are a couple hundred bucks on Ebay......) But, since you already have 'spares', I think I would try swapping out the O2 sensor first, and if that doesn't make a difference, try the PCM.....
I am pretty sure you can also get OBDI data cables in a USB, or Serial port flavor, and free software for a laptop that would do logging as well. Trouble is, for Dodge, the 'free' software doesn't really cover many parameters. The pay-me software is better, but, I have no experience with that, so, can't make a really good recommendation.
I am pretty sure you can also get OBDI data cables in a USB, or Serial port flavor, and free software for a laptop that would do logging as well. Trouble is, for Dodge, the 'free' software doesn't really cover many parameters. The pay-me software is better, but, I have no experience with that, so, can't make a really good recommendation.
Legend
Joined: Nov 2014
Posts: 8,098
Likes: 318
How would I be able to do that? I'm guessing I'd need some special scan tools, as well as oem Chrysler tools because it is a obd1.
What would be your approach? Try a different o2 first, or try a different pcm? I have both the o2 and pcm available, so I'm not having to buy a new one, for now I unplugged the sensor and reset the pcm so I can drive and tow with it and keep the power.
What would be your approach? Try a different o2 first, or try a different pcm? I have both the o2 and pcm available, so I'm not having to buy a new one, for now I unplugged the sensor and reset the pcm so I can drive and tow with it and keep the power.
Thread Starter
|
Veteran
Joined: Nov 2016
Posts: 344
Likes: 0
From: Omaha NE
Ok so after some trial and error, I tired my old o2 sensor with my reman pcm, and it was still caused a misfire, but it was more in the 1250-2000 range than the previous 2000-3000 range. So at this point I put my 5.2 manual pcm back in, and reconnected my new denso o2 sensor. I have expericanced no issues whatsoever. I ordered a new NTK unit and I'm going to try it with my 5.9 manual pcm, and I'll see what that does. If the problem persists, I will call the pcm bad.