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Discussion Starter #1
Ever since I bought my tundra from the Dealership used I’ve had a problem going up hills.. as soon as it kicks up the RPM and downshifts it will hold at like 2300rpm and bog down every 1 and a half seconds exactly to 2100 rpm and go straight back and forth till done going uphill. It does not always do it but for the most part it does especially when raining. Also when raining going between 55 and 60 it feels like going over bumps like it’s stuffering but that’s only in the rain or I guess when there is more of a load it’s pushing through. There is no check engine light and it’s a 2012 platinum with 209k miles. Has new MAF. I think I’ve narrowed it down to Fuel pump or all 4 o2 sensors but I’m not sure. Any help would be great
 
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