Bucking at around 45 mph??

[NacIK]

Mine does it too! Just under partial load, like cruising on an incline. If I shift down to 3rd it doesn't do it so bad. It feels like the transmission is trying to down shift.

I know it is not the engine. I have a DashDyno SPD scanner and I logged everything on the engine. It all looks perfect, so I doubt that it is the problem.

I am curious though if you have a K&N filter. The MAF controls the line pressure in the transmission, and K&N is famous for destroying the sensor it the filter is overly oiled. I think mine is ruined from this, but not sure. I did have my filter oiled too much one time and now my sensor is showing a reading with the engine not running. Any experts on this? When I go back to the store later I will get the reading and post it if anyone is interested.

 

[dcZ71]

I just have the stock air box with the stock paper filter.

Three people now with the same issue, we gotta figure this out.

 

[Butch]

I am curious though if you have a K&N filter. The MAF controls the line pressure in the transmission, and K&N is famous for destroying the sensor it the filter is overly oiled. I think mine is ruined from this, but not sure. I did have my filter oiled too much one time and now my sensor is showing a reading with the engine not running. Any experts on this? When I go back to the store later I will get the reading and post it if anyone is interested.

Pick up a can of MAF sensor cleaner from autozone, mine was dirty as ****. It is important not to over oil the k&n filters but I always go back into my system a week after oiling my filter and reclean my MAF, just be sure not to let anything touch the sensors.

 

[dcZ71]

I took mine out and sprayed it with electrical cleaner. Two of the three sensors looked like clean metal. One of them was blackish dirty looking. I couldnt really do much for it.

this is what i used:

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[GWKP]

i need to look at my MAF sensor an clean it it definetly wont hurt anything ha but yeah where are all the super techs with the answers to this question??

 

[NacIK]

That's my question!

 

[dcZ71]

dang thought someone found something


im just learning how to drive to avoid it right now

 

[dcZ71]

What have yall done for trans and rear end fluid? I have never done it since i bought it so i dont know if its ever been done. trucks got 119K

 

[NacIK]

Well, there is two ways to prevent it. On mine I just put it in 3rd when climbing an incline. However, my neighbor told me to take the tranny pan off, clean the **** out of it, and then run a pint of brake fluid in it with tranny fluid to soften up the seals. Same concept as the transmission fluid in the oil. It might work and I would try it on mine, but I want it dead and gone so that the wife will buy an 80-E for me.

 

[dcZ71]

Any of y'alls do something at idle? If i am idling in gear it will do a single buck every couple seconds. I can see the rpm needle dancing a little bit too. If I pop it in neutral the rpms come up a little bit and it idles smooth.