Surging transmission when you first start.

[Retirednavy2010]

I have a 2019 Ranger, the transmission was rebuilt at 30,000 miles but when I first start the truck and drive in the neighborhood (under 20 mph) I get a surging or bucking with the transmission. Doesn't matter 1st, 2nd, 3rd or 4th gear. Once I take off on the main road it shifts fine with the exception of going into 8th, i infrequently clunk but I figured since I have a 2 year unlimited mileage warranty on the rebuild I'll let it go south and get the rebuild again. Any ideas on the surging?

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[Peter949]

Some fixed it by replacing the EGR sensor but if that 10R80 is failing fix it. Don't delay when you have warranty still.

 

[tygr2007]

23 Ranger- Same thing. Dealership denies service due to aftermarket parts. SOL

 

[Retirednavy2010]

Some fixed it by replacing the EGR sensor but if that 10R80 is failing fix it. Don't delay when you have warranty still.

I'll have to look into this EGR sensor idea. Thanks

 

[GhostStrykre]

https://www.ranger5g.com/forum/threads/bucking-surging-epidemic.14581/page-50

by the sounds of it, you've run into the epidemic. many of us have run into this issue. it's like a $30-$40 part. the part swap is a little fiddly, but doable in 15-20 min in your driveway.

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