Mystery 6th gear shift electric issue

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NEW!!!

I will make one calibration change for an additional $100 per change. For example, changing a shift point for a given gear is $100 vs changing a shift point and a pressure setting would be $200. That value can be used towards the full custom tuning price.

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Last post

Tue, 07/11/2023 - 21:42

#1

wainfiggitty

Mystery 6th gear shift electric issue

I'm having an issue with shifting into 6th cruising along at hyway speeds, probaby mostly above 70ish. Normal driving is fine, but when I give partial throttle and into boost, it will "hang" in 5th until I command "clear DTCs". Then it will immedialty shift into 6th and lockup tcc.

There is no code. I even went into engine and trans diagnostics, turned on every SES and set to MIL on first error.

P068 and all MAF codes are off, and all associated tables are set to prevent those errors.

It will eventually snap out of it and shift into 6th if I do nothing and wait a few minutes as well.

E38, speed density OS, MAF enabled, turbo 6.2.

Any Ideas????

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Mystery 6th gear shift electric issue

Click on the "SUBSCRIBE" tab to sign up. I will not respond to technical questions unless you are a paid subscriber. Calibration and Config files will not open directly from the site, they must be downloaded to your computer in order to open.

NEW!!!

I will make one calibration change for an additional $100 per change. For example, changing a shift point for a given gear is $100 vs changing a shift point and a pressure setting would be $200. That value can be used towards the full custom tuning price.