Hello everyone. I'm on my third APPS in less than a year in my 2000 2500. Once replaced, code 0122 is gone, but I then get 1693. The APPS have lasted anywhere from three months, to three days, to even six hours. Then, the surging at around 50-55mph(after OD kicks in, if I'm not gettin on it)starts again. It will even do it with no code 0122 or check engine light. I have zero experience in how ECM and PCM codes work. If the 1693 isn't cleared after replacement, will it still think there is a problem, and could that be causing this screwy, vicious circle? 

Welcome,  I am glad you were able to get joined on the site.   

 

so you replaced your apps, the issue went away, then a few months later you get another p0122 code?

Yesser...and after i replace it, I get code 1693.

So you cleared codes after replacing it?  You really cant have a single 1693 code, it is always paired with another code.

See, that's where I get confused. The  p0122 clears on its own I'm assuming, because it doesn't come up anymore. If I don't clear it with a scanner, is it technically still there?

It should self clear after x number of time without the code being prompted, but the 1693 code means you have another code somewhere.

Great. How do I find that? All I've been doing is the turn the key three times deal to see what codes are there. Would an OBDII suffice? The other Chrysler sensor that moparman says I'd need is $2000!!

Go to autozone borrow a scanner and see what codes you have.  

 

 don't worry about what you need or dont until you get a scanner on the truck.

I agree Me on getting codes. You got find the problem before buying expensive electronics. I have a similar issue on mine right now. My truck was surging, mainly only noticed it at idle, but surging anywhere from 1% to 8% and setting a 122 or 123, I forget now. I was convinced that it was the TPS, but not sure. So I ordered a TPS off of Ebay for $16. Installed and low and behold no surging no codes. So I went ahead and ordered a new Timbo apps to replace my old one. Installed it and the engine starting surging within a couple minutes. So I reinstalled the el cheapo from Ebay(from china by the way) and no surging but it did soon set the cel, 222 code, and every so often surges just a little, almost un noticeable. i believe my problem is in the wiring harness. My point is that I have a  problem and am not sure what it is, but I am not buying anything else until I know. When it comes to chasing electrical problems I would rather replace my dash and HVAC box than chase electrical gremlins.

 

And welcome to the site.

Edited October 22, 20159 yr by dripley

Thanks man,  glad to be here. That's what I'm trying to avoid, but, unfortunately, it's illegal in the Banana Republic of California for any business to scan vehicles for free. Will a dealer do it for a fee?

Not sure I understand that??  Really you can't borrow a scanner from autozone?  

 

Dealer and free don't go together..

 

I guess you need to buy a scanner then.  try harbor freight.

Edited October 22, 20159 yr by me78569

Also, given a few odd electronics issues,, have your alternator checked while you are at Autozone. 

You heard it right Me. No parts place will let you use a scanner. They used to! Then the dealer's and others started complaining a few years back, and of course, they made it illegal in CA. 

Aint that a hoot. I guess the only NorCal you will see with me would mean North Carolina. It seems to me that most of the items I pick up at whatever store has something in it that the state a cali has determined can cause me to get cancer. Guess I will just shrivel up and die. Might do it there just so they have to bury me. I take that back, they would probably bury me in Nancy Pelosi's yard.

Thanks man,  glad to be here. That's what I'm trying to avoid, but, unfortunately, it's illegal in the Banana Republic of California for any business to scan vehicles for free. Will a dealer do it for a fee?

Man California is becoming bigger and bigger shithole every time I hear something about it, I hope rest of US does not follow it. 

Also, given a few odd electronics issues,, have your alternator checked while you are at Autozone. 

I don't think they know how to do that, you'll have to tell them.

I tend to agree. I would get a cheap code reader and at least check for code. Normally all codes are held for 40 warm up cycles. If the code is not trigger again after the 40 warm up cycles then it auto erased. A warm up cycle is start from a coolant temp below 140*F and rising over 165*F. That is one warm up cycle. So if you do several start and stop events in one day you would have to let it cool completely down to below 140*F to get a second warm up cycle.

Need to stay with this forum. It can help save you money by teaching you loads of stuff about your truck....... avoiding the money grabbers. That is the first law around here that we all try saving you grief and expense with your truck.

 

Good grounds, good clean connections everywhere helps stop those wild haired confusing mysteries about your truck. It's amazing how many places will sell what is called a' good alternator' when in actuality it shoots out too much AC voltage, only to find out later it shortened the life of your expensive electronics.

 

Seth, look up Timbo apps. and check the ac volts coming from the alternator.The alternator does not have a separate ground so it grounds thru the mounting bracket (painted) causing sometimes a poor path for the batteries to absorb the AC noise.

 

Edited October 24, 20159 yr by JAG1