PTU fluid change frustration
- Thread starter ecoboostsho
- Start date
When I hooked up the MyCal a couple of months ago to go from 4+ to 4X, it showed several DTCs. The check engine light has never come on so I think they were either random misfires that may have occurred before I changed plugs, false alarms or just simply irrelevant. Many others have noted similar DTCs. I cleared mine and went on my merry way.
I cannot imagine how it could flash itself back to stock by itself. That one has me puzzled!
I cannot imagine how it could flash itself back to stock by itself. That one has me puzzled!
SHOnUup said:
U0100 is a communication error, probably due to the dongle being left in. I have had that one pop up. I have had Mycalibrator report that the stock tune is loaded when in fact the 93 was loaded. I don't believe that it's possible for the PCM to revert to stock on it's own with our cars. Do you have access to FORScan? It will tell you exactly what the codes are. See pic.
These are the codes that pop up after an error with the MXobd or when you unplug the battery.
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ecoboostsho
New member
Well I did this again with a smaller tube and rotating the wheel three times seemed to help as I got out about 10 ounces. Less sludgy this time around. You need to be patient with it to really get the fluid out. I definitely think doing this a few times on my car will help desludge it...so to speak. I plan regular maintenance to the ptu from here on out. I can do the whole job in less than an hour...would be much less if it wasn't so hard cleaning up all the black sludge!
ecoboostsho
New member
The biggest improvement was after the first time honestly. This time it just seems to shift better and is generally smoother. Happy with the results though!
