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Crank Position Re-learn - Just Got My New Wait4me Pcm...


Erwin8r

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...So how do I accomplish this "Crank Position Re-Learn" trick without going to the Stealer? Will normal Indy shops have the capability? TIA!!

 

Background: I had a PCM4Less -tuned PCm in my truck that was a bit too aggressive (pinging, detonation, and very abrupt). I tried contacting Zippy for a re-tune or replacement, but he's probably too busy at the moment. IN any event, I found Wait4me and they shipped one to me for a reasonable amount... I'll report back on the feel/improvments, etc...

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all you need is a simple scan tool.....i work at a International dealership and i used our Tech-II tool.....only took aobut 3 minutes.......hook it up and setup the tech-II and wait for ur engine to warm up and then rev ur engine up to 5k or sumthin and then its done......very easy just gotta find the right tool.....call around to some shops and ask if they have a tech-II device.......its a pretty commin tool for pulling engine codes etc.

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all you need is a simple scan tool.....i work at a International dealership and i used our Tech-II tool.....only took aobut 3 minutes.......hook it up and setup the tech-II and wait for ur engine to warm up and then rev ur engine up to 5k or sumthin and then its done......very easy just gotta find the right tool.....call around to some shops and ask if they have a tech-II device.......its a pretty commin tool for pulling engine codes etc.

UPDATE: I bolted on the PCM last night, and guess what? No Crank Position Relearn necessary!!! I followed Mr. P's instructions to a t (removed the negative battery terminal, etc...), and then went to start the key relearn--that wasn't necessary either. THe truck strated right up, but ran very, very rough and would not idle... I coaxed it out of the garage, onto the street, then went for a nice 15-mile loop... things started to clear up right away--and what an improvement!!! I had a PCM4Less Tune in the old PCM, and it was just too aggressive for the truck. It was set-up for 93-cotane fuel, which of course, we don't have in California (at least not anywhere close to Los Angeles). IT used to ping and detonate quite a bit on the gas, and that is completely gone now. No I just get smooth, forceful acceleration and firm, but not ridiculous, shifts.

 

COuld it be that programmers can now eliminate the need for the crank & key relearn? Wait4me asked for my VIN--maybe there's a way to program it in the PCM now?

 

The Wait4Me was a good buy for me...

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you better make sure you have it done correctly.......bc you wont be able to detect misfires etc.

 

but yea i got a w4me tune and u cant beat it for 160 bucks delivered to ur door

 

 

Well, it would be difficult to get wrong--I mean, I made sure the green conneector went back into green, blue into blue, disconnected the negative terminal, etc... I even made sure the orange "gaskets" were in place properly. It acted like it should at first (rough running, very low idle, etc.), then smoothed out over the "learning" drive. Did you have to do a crank relearn on yours?

Edited by Erwin8r (see edit history)
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you better make sure you have it done correctly.......bc you wont be able to detect misfires etc.

 

but yea i got a w4me tune and u cant beat it for 160 bucks delivered to ur door

 

Did you have to do the Crank Re-Learn? I'm going on day 3, and so far, so good... I fell in love with my truck all over again!

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I had to do a relearn after 1500 miles on one of my tunes. So just be patient and enjoy the new found power.

 

CD

 

Okay... the plot thickens. So I was just a bit worried (though no lights came on...), and called Jesse at Wait4me. He instucted me to do the re-learn anyway (something about it relying on his figures temporarily, and it being better off doing a re-learn on its own). I took it to a local indy shop that re-sets lights, etc. They plugged in a diagnostic tool, took about 5 or so minutes, then told me it was "done" and charged me $20. I didn't see them rev the truck up or anything, although they did start it and let it idle while they fiddled with the tool. Does this sound right? Fook me--I dislike feeling like a noob, and I'm thinking I should just send Wait4me the $200 for their diagnostic tool (that can accomplish these re-learnes, etc.). IN any event, I'll wait a couple weeks and see if things remain kosher. So far so good... :cheers:

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Okay... the plot thickens. So I was just a bit worried (though no lights came on...), and called Jesse at Wait4me. He instucted me to do the re-learn anyway (something about it relying on his figures temporarily, and it being better off doing a re-learn on its own). I took it to a local indy shop that re-sets lights, etc. They plugged in a diagnostic tool, took about 5 or so minutes, then told me it was "done" and charged me $20. I didn't see them rev the truck up or anything, although they did start it and let it idle while they fiddled with the tool. Does this sound right? Fook me--I dislike feeling like a noob, and I'm thinking I should just send Wait4me the $200 for their diagnostic tool (that can accomplish these re-learnes, etc.). IN any event, I'll wait a couple weeks and see if things remain kosher. So far so good... :cheers:

 

When I had to do my crank re lear, I watched my buddy do it with his snap on tool. It tells you what to do step by step, it even told him to rev it up.

 

who knows, maybe it just depends of what they used to do it. Maybe some one more well versed can chime in.

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