Thread: possible failure yet again??

this is like the 4th time it has happened with the other day happening twice in one day. i drove it today around and it did not happen....odd

copied this from the other forum. is this plausible?

There is a service bulletin for the 3800 if your Mass Air Flow is going bad the transmission will slip, if you havn't check and make sure that is reading properly. If you drive to much on a transmission that doesnt know its under a load it will burn up the bands and the transmission will have to be rebuilt since the belts wont grab anymore. This was also a major problem in the bonnevilles.

Edit: Mass air flow failure can be caused by: Air temperatures exceeding 97*F (Open Cone Intake), Over oiled aftermarket air filters (Be careful to not overoil your K&N and always make sure a new one feels dry), and also any cleaner used to clean around the intake if it gets on the MAF it will fail.

Plausible, but I would like to add that TB cleaner that says its safe for MAFs is just that... Safe.

A dirty maf will certainly cause the trans to slip and I have witnessed that first hand, OR if you have made a recent change to your intake plumbing/air filter. A larger pipe/filter/throttle body means slower airflow across the sensor and if it reaches out of range far enough it will cause the trans to be low on pressure. It will also cause the car to run too lean at WOT and all normal driving which means your fuel trims will be reading positve quite a bit at the same given time. Regardless, if the maf sensor is dirty the problem will exist all the time, not just once in a while. This was also a problem when using an AFC when it came out. You could make adjustments soo far and then it would cause the trans to slip if making big changes to make the number read lower. Also if the maf table in the pcm was tuned far from stock it can cause low trans pressure. Your problem really doesnt connect with a dirty maf sensor but you could always check your fuel trims and then clean the sensor and see if anything changes.