Error 51 7747

[sciroc]

Any ideas on why I would be getting an error 51 (prom error) ? I have burned 3 new chips and it is on all of them. Truck runs fine, and I can't see where it is causing any tuning issues but something isn't happy. No check engine light either....

moates burn 2, chip adapter, tunerpro software,

[delcowizzid]

51 will be from the checksum being wrong.some xdf's dont calculate the checksum.error 51 its probably running on the limp home mode resistors in the memcal.

[sciroc]

thank you...I will check on that.

[sciroc]

I am using all the latest XDF, ADX files, and TunerPro

TunerPro = version 5 build 5.00.8383.00
XDF File = $42-1227747-V5.9.7.xdf
ADX file = $42-1227747-V5.2.adx

I thought they were set up to auto update the check sums

[EagleMark]

It is and that should work fine. Be sure to save the bin before burning!

Even if you have a corrupt bin file it should work, but just for kicks try another bin.

Or change Mask ID to AA to disable check sum. Are you disconnecting batt or power to ECM to clear codes?

[sciroc]

That may be the kicker....I haven't been disconnecting the battery each time I burn a new chip. I will grab a couple a chips, hit the bypass, datalog, wash, burn, datalog, wash, burn, datalog, add timing, datalog....etc May do this 5 or 6 times. Now that I have my BLM's near "perfect" up to 60 kpa cruising, figured I would explore the HIway lean avenue. That is when this came about.

So, I should burn another chip, disconnect the neg battery, reconnect the battery, install chip, and see where I am?

[EagleMark]

Yup, somewhere you set the code and never got rid if it!

[sciroc]

sounds good... thanks

[sciroc]

OK...please review the attached log. I cleared the codes and ran another lap and I did not see any indications that the HiWay Lean was enabling.



Yup, somewhere you set the code and never got rid if it!

[ony]

up load your bin file and I will see if I can help you.

[sciroc]

here is the Bin....I appreciate you looking at it. I noticed the BLM is freezing so the hi-way mode is engaging. I just need to do some more adjusting to achieve better MPG. 12 mpg SUCKS!!!!

[ony]

I went to look at your bin it has been saved as a zip file or uploaded as a zip file . tuner pro will open it but it is all corrupted, you might want to start with a nother bin and not save or upload as a zip file.it is coruppeted bad unless it is from uploading or saving as a zip. showed the mask-14, cylinder count 159, I don't think it is a 159 cylinder :laugh:which bin file did you start with ?

[sciroc]

ASDU3 bin

[ony]

that is a pretty good bin ,I changed hyway spark adder, some bins with hy lean crusie I would have to go into pe and get it to pick up a knock count before it would enter hy lean crusise. try this bin and if it don't go hlc floor it and see if you can force a few knocks, every thing looks good and should work.

[sciroc]

Thank you for looking at it. So I may need to get it to kick into PE each time before it will resume HLC?
I will run it this weekend and see how it reacts.


that is a pretty good bin ,I changed hyway spark adder, some bins with hy lean crusie I would have to go into pe and get it to pick up a knock count before it would enter hy lean crusise. try this bin and if it don't go hlc floor it and see if you can force a few knocks, every thing looks good and should work.

[ony]

no some bins are that way. if you smooth the timming table then add 1 degree from 50kpa -100 kpa it will knock on its own. look at your table it goes up then down to keep it from knocking adding 1 degree would proble force the knock count. the hlc patch has a forced knock built in it . I would run it an see before tunning any more should work. iam sorry I was thinking of the corrupted bin I looked at, the main spark looks pretty good in this one smoothing would help a little.

[ony]

I would start another thread in efi, it is more of a tunning ? now, with the egr disable is proble why you may have to force a knock count it takes 6 degrezz of timming away if the egr is called for. when you try it out post up a data log an I will try an help not tuned no v8s just 4.3 v6.

[sciroc]

I appreciate the help. I will be doing some traveling to day and will post up some data tomorrow

[sciroc]

Alright...I am starting another post in the EFI section with the bin and log of the bin you sent.