Reseting PCM?

SANTEEN

Active Member
Supporting Member
Joined
May 25, 2009
Messages
6,150
Reaction score
0
Location
Miami, Fl
Still having the slightly high idle after installing the X Metal TB. WHat is the proper proecedure for reseting the PCM on the 2006 10's? I read somewhere that it was different on the 2006 models. Thanks guys.
 
Remove both battery cables then touch the cables together for 15 seconds or so. Just disconnecting the battery is NOT the same.

If there is something different with the 2006s, someone might be able to let us know, but the above procedure has been working since 1984.

It also works on the new diesels.

PS- Did you turn the idle screw down a bit?

Ronnie
 
Last edited:
Ronnie is correct. The service mgr at my dealer told me this same thing...though he said leave the cables together for 10 minutes..
 
rottenronnie said:
Remove both battery cables then touch the cables together for 15 seconds or so. Just disconnecting the battery is NOT the same.

If there is something different with the 2006s, someone might be able to let us know, but the above procedure has been working since 1984.

It also works on the new diesels.

PS- Did you turn the idle screw down a bit?

Ronnie
Thanks for chimming in, Ronnie. I haven't touched the idle set screw, as I was told that I really shouldn't and the PCM owuld eventually adjust the idle. But, I'm thinking I should adjust the idle a bit. What are your thoughts on touching the idle screw?
 
When my t.p.s. went south and the engine was only seeing 70% throttle, I was swapping e.c.u.s back and forth between stock and the DC stage 2 flash back then-(the days before the SCT) and I didn't really notice much of a power difference with either e.c.u., EVEN WITH THE NEW T.P.S. INSTALLED Hmmmmmmmm?????..... That was because the data from the old defective t.p.s. was being retained in BOTH of the e.c.u.s. The check engine light didn't even trip there was a problem with the data from the t.p.s. 'cause it was still working, at least, I guess, and must have still been within range of the data the e.c.u. would accept.

It wasn't until I rebooted each of the e.c.us. that the power returned to normal levels in each box. The change was immediate.

10 minutes, I haven't tried before but it couldn't hurt....

Ronnie
 
Last edited:
SANTEEN said:
Thanks for chimming in, Ronnie. I haven't touched the idle set screw, as I was told that I really shouldn't and the PCM owuld eventually adjust the idle. But, I'm thinking I should adjust the idle a bit. What are your thoughts on touching the idle screw?

You'll need one of the "tamper-proof" Torx bits to be able to adjust it but I had to adjust mine (lower) which makes sense, 'cause there is a bigger opening (so to speak) than the o.e.m. body. It is a touchy setting so I'd just tweak it a small amount at a time.

Ronnie
 
Eventually, the e.c.u. will read the correct info on it's own (in the case of changing a defective sensor) but the cable trick forces a reboot; and I hate to have to wait for stuff to happen..;) I don't know if your e.c.u. will adjust the idle on it's own, maybe not, 'cause it is a different t. body than it is used to dealing with. Try the cable trick and if the idle doesn't settle down on it's own, shortly after that, you may have to tweak the screw. I rebooted mine after the install and it couldn't cope with the new t. body. It surges a bit on decel but personally, I don't really care....

Blackberry cell phones have more computing power than our truck computer's and they can be slow to catch on, so sometimes we just need to help them out.

Maybe the surge could be dealt with at the tuning level...

Ronnie
 
Last edited:
rottenronnie said:
When my t.p.s. went south and the engine was only seeing 70% throttle, I was swapping e.c.u.s back and forth between stock and the DC stage 2 flash back then-(the days before the SCT) and I didn't really notice much of a power difference with either e.c.u., EVEN WITH THE NEW T.P.S. INSTALLED Hmmmmmmmm?????..... That was because the data from the old defective t.p.s. was being retained in BOTH of the e.c.u.s. The check engine light didn't even trip there was a problem with the data from the t.p.s. 'cause it was still working, at least, I guess, and must have still been within range of the data the e.c.u. would accept.

It wasn't until I rebooted each of the e.c.us. that the power returned to normal levels in each box. The change was immediate.

10 minutes, I haven't tried before but it couldn't hurt....

Ronnie
You just got me thinkinga little, when you mentioned the 70% throttle. I just hooked up the supechips programmer and the TPS is only showing 78% when pressing the gas all the way down, key on engine off. Could there be a problem with my TPS?
 
SANTEEN said:
You just got me thinkinga little, when you mentioned the 70% throttle. I just hooked up the supechips programmer and the TPS is only showing 78% when pressing the gas all the way down, key on engine off. Could there be a problem with my TPS?

Maybe. The ONLY reason I checked into mine was because the idle used to flare up after a visit to the carwash. It would then settle back down to normal idle when it was dry enough to work kind of properly. When it started doing that, the w.o.t. performance was "flat". After the new t.p.s. install and a e.c.u. reboot, it was a different truck.
If the t.p.s. is giving the wrong data to the e.c.u. at wide open throttle, it is going to be pulling from different fuel and timing tables. So the power loss under those conditions is understandable.

Ronnie
 
Last edited:
I think that did it. Just went out and back the screw out one turn and now it idles at 750 in drive. Still may be a tad high, but much more tolerable than before. Don't know if I want to come down anymore. What should the idle be in gear and alos in park?
 
SANTEEN said:
I think that did it. Just went out and back the screw out one turn and now it idles at 750 in drive. Still may be a tad high, but much more tolerable than before. Don't know if I want to come down anymore. What should the idle be in gear and alos in park?

Mine is the same at idle in Neutral/Park or in Drive.
750 seems fine to me and is where mine is....

Idle speed is an emissions issue but at this point, personal pref.
 

Latest posts

Support Us

Become A Supporting Member Today!

Click Here For Details

Back
Top