After buying a Gryphon, I went ahead and did the ol' recommended service when one installs a programmer. After returning the Gryphon to stock, I cleaned the MAF sensor and the throttle body, but while cleaning the TB, things got interesting. I got a CEL (understandably because I had stuff unplugged). However, the scariest part was when the engine fail-safe mode engaged. If you haven't had that happen to you, it's no fun. Engine idles EXTREMELY rough, and you have almost zero throttle.

It remained in fail-safe for quite some time. Then I shut her down and let her rest a few seconds. When I restarted her, the fail-safe alert on the info center had cleared but still ran rough. That's when I turned her off again and pulled the TB from the intake to continue cleaning it. After all the cleaning was done and everything buttoned up, I started her up. She ran and idled great! However, the CEL was still on. I figured it would go off when everything was plugged back up. There were 3 codes. I can't remember them exactly, but one was something like TB sensor circuit was too high. Another was Something to do with the MAF/IAT. The last one was the most interesting to me...P1000...which was basically telling me that the OBD wasn't fully functional(?).

After clearing the codes with the Gryphon, the CEL went off, but when I ran the diagnostics from the Gryphon, it still showed the P1000 even without a CEL. I ran it stock for a few miles. Then I loaded my custom tune 3 and checked the diagnostics again. Nothing! I took her or a spin, and she ran/is running better than ever!

Anybody have an idea what may have gone wrong, and if so, what can I do to prevent it in the future?

 

Was the battery connected when you made all of these changes? If yes, that would be my guess, FWIW.

 

Not sure what recommended service you are talking about. Where you cleaning the MAF and TB while the truck was running? Why would you disconnect things while the truck is running?
The p1000 is from switching tunes. That will clear after the required driving cycles are completed.

 

Battery wasn't disconnected. The truck wasn't started until the mechanic friend of mine told me to start it while he sprayed the TB cleaner into the TB. Methinks therein lies the problem. I was leery of doing that, but he's the mechanic. I figured he knew what he was doing.

What exactly are the "required driving cycles"?

 

...

 

I always disconnect the negative terminal before working on my truck, i think others do
too as a common practice.

 

Yeah well...like I said...this guy is supposed to be the mechanic.

 

Most of the time, so do I. However, the so-called mechanic insisted on running the engine while spraying the TB. I just figured he must know better than I.

 

Told ya how to go about cleaning these items and what to do........

Drive cycle will go away after 100-300 miles....the pcm is relearning.......

Or after a couple hundred program level 2 again....

 

I know, I know. I'm sorry 88. Like I said, I was in a huge hurry (gone from home for a week now), and I made the mistake of trusting my "mechanic" pal. Some pal, huh?

Ok so we all agree. I'm a dumbass. Won't happen twice.

 

PS. It's not like I don't feel dumb enough here, but we're not all grease monkeys. There's a huge difference between being dumb and being a newbie....just trying to learn and at least I'm patient enough and able to do just that. I'll make mistakes. That whole "to err is human" thing?

 

Always set the time aside....never be in a hurry....that's when things happen.

 

So is it running bad still or is everything ok?
If you really want to get rid of the p1000 here is a list of the required drive cycles.

http://www.obdii.com/drivecycleford.html

 

Thanks keyhead! I'm sorry...I thought I posted somewhere that all is well now. Thanks again for the info, though!

 

If you have a 3V engine you will most likely not need to clean the TB. The setup between the TB and EGR is different from previous models and there should be much less unwanted deposits.