PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

my converter won't lock?????

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Old Jun 13, 2009 | 08:22 PM
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Default my converter won't lock?????

im stumped. my converter used to lock up (thought about setting it higher so it would be less anoying) but now it doesn't lock up at all,EVER.

this problem started when i loaded a new program to help its low speed idle issues (just iac stuff) doesn't die nearly as much now. but ever since i loaded that program on, the converter never locks.

today i tested it in gear and maunally engaged the tcc. it locked and the motor stalled, so the tcc works. then i lowered the mph for the tcc to engage and tried that just to see if it would change anything (worst case it would be locking up real early).

.....nothing.

but i did notice something called "performance mode". on that part of the program it tells the tcc to never lock up no matter what speed, its 256 across the board.

so im starting to think it might be stuck in this "performance mode". if so, how can i shut htis off (i would like to get SOME gas milage)?

anybody who knows anyhting about this please please shed some light on this for me.

thanks
leon
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Old Jun 13, 2009 | 09:34 PM
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What are your mods, and can you post the tune?

It always amazes me that people will ask for advice and not mention their mods. And in your case, even have tuning software, and then not post a tune and/or run log.
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Old Jun 13, 2009 | 10:13 PM
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i dint post the tune for two reasons.

1. the laptop its on is my friends and he is at someone else house right now so i cant even post it.

2. my laptop is in iraq right now so again i have no way of posting.

also i didnt really think the tune had much to do with my problem (im thinking its stuck in this performance thingy mode).

there's not really much for "mods" (hate that word, kinda sounds ricer), just a plain jane ls1 with ported heads and a cam. and an underdrive pulley and ported throttle body. not much else really.

but i will see if my friend (who has the tune right now) can email me the tune, i havent logged it though so i cant see that. but since you mention it i guess it couldnt hurt.

mostly i was anting to know about this "performance mode" to understad what it even is.
thanks


edit: just got ahold of steve......he doesnt have internet at his girlfriends so i have to wait till tomorow. on the upside i can do a run log tomorow morn and post that witht he tune.

and thanks again for helping a noob.

and the car has headers (but i didnt mention that cuz i didnt really think it matters and cuz its kinda a given otherwise how would you route the exhaust on a mustang?

Last edited by leonpiper69; Jun 14, 2009 at 01:43 AM.
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Old Jun 13, 2009 | 10:47 PM
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one thing to check out, if there are missfire codes, the PCM will disable lockup. I'm not sure if it only does this with current codes or history codes or both maybe.

good luck.
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Old Jun 14, 2009 | 01:20 AM
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the performance mode is just the tow/haul mode, unless you have the input setup, it doesnt work and since your asking about it you probly dont... just ignore those tables.
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Old Jun 14, 2009 | 02:36 PM
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thanks for explaining the performance mode (my truck has that now i get it).

i have no misfires (kinda hoping i did so i would know what the problem was)

and i did a run log this morning so heres the tun eand log.

on the log when i was backing out of my driveway it died (not unusual) then i just took it around the block and back. varried speeds and tps to try to get it to lock, but nothing. even drove it in third and still nothing (3rd was trying to get a higher mph with less tps hoping it would lock, but no.)

what you thinks?
Attached Files
File Type: hpl
june14leon.hpl (135.0 KB, 170 views)
File Type: hpt
leon6-13-09.hpt (457.0 KB, 129 views)
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Old Jun 14, 2009 | 04:50 PM
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Go into table display before you hit the record button, right click in blank area, then click Insert. Look in engine diagnostics, and find Misfire. Add the Misfire History #1 to #8

line them up so 1,3,5,7 is on left, 2,4,6,8 is on right , then go do your datalog again. You can have misfires with no DTC set.

when your log first started out, right bank long term was at 19% Check for exhaust leaks upstream of the o2 sensor.

Looks like you have some other issues going on too, might be related. Look at your bank1 o2 sensor volts, alsmost a flat line, whial bank2 is up & down, like it should. start your next datalog with a cold engine, and start the log as soon as you turn on the key, leave the key on, engine off for about a minute. See if your oxygen sensors are heating up. volts on key on should be .445 or so, and drop close to .000 as they warm up (with engine off).

in your tune, P0300, engine misfire detected,is set to no error reporting. I

Last edited by busta9876; Jun 14, 2009 at 05:01 PM.
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Old Jun 14, 2009 | 05:39 PM
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yeah i was going through the tune today on my house comp. and noticed the no error on misses. im going to have to change that.

i cant do another data log yet. my buddie whose laptop were using is busy with both his baby mamas today.

and when we were checking the codes for misses we had the gauges displayed and with the key on i noticed the o2's reading about 600 and then going down as the key was on longer, and we had noticed that right bank 19% bit as well, but i didnt think to check for an exhaust leak. i hope one of my welds on the header flange arent leeking.

i think the very next thing to do is reload the tune with the error reporting on the miss and see if i have any, then go form there.

thanks for the idea guys, im still learning how to use this stuff and while its fun sometimes when im scrathing my head its still frustrating.

leon.
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Old Jun 14, 2009 | 09:28 PM
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Try this one. The tune needs alot of help in general, but this should help your TCC and should also help the stalling. The VE and MAF need work. If you want anything closer, it'll cost ya.

leon6-13-09.EH1.hpt
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Old Jun 14, 2009 | 11:52 PM
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Originally Posted by edcmat-l1
Try this one. The tune needs alot of help in general, but this should help your TCC and should also help the stalling. The VE and MAF need work. If you want anything closer, it'll cost ya.

Attachment 183834

i apprciate the help. i'll check this one out. and i know this tune needs some help, but im still learning and im one of those proud i did it myself type (but if i really start banging my head against the wall, im not against getting some pro help), so thank you dude, its much appreciated.

leon

Last edited by leonpiper69; Jun 15, 2009 at 12:02 AM.
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Old Jun 15, 2009 | 09:53 AM
  #11  
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You want to log TCC_Mode (though it will not display clean in
anything other than the table view). A --3-- value says that
it "woulda, but" meaninig misfiires are holding it off from lockup.

Log Misfire Current Cylnider Mode for cylinders 1-8. The real
time misfires are what bug lockup, not just the P0300 code.

Also look for immature sliip codes (P1870 especially). This will
iinhibit lockup full time until cleared (key-on if immature, reset
codes if it's set).
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Old Jun 21, 2009 | 09:45 AM
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Originally Posted by edcmat-l1
Try this one. The tune needs alot of help in general, but this should help your TCC and should also help the stalling. The VE and MAF need work. If you want anything closer, it'll cost ya.

Attachment 183834


i finally played with it. that diff in timing made a good diff in the low speed idle quality and yes .....it locks up now. weird, i dont know why, the speeds are just a little diff. but i didn't think it would make that much of a diff.


also i found my exhaust leak on the pass header.

thanks again.
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