The MAF resistor/sensor works on hot heat loss generated by air flow. If it is dirty/oily it will skew the reading, affecting air/fuel ratio.
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These are the hard rubber replacement I used to keep the factory ride, but a 10x better upgrade from stock. Dorman (924-065) Radiator Support... https://www.amazon.com/dp/B00HED84IQ?ref=ppx_pop_mob_ap_share
The others are also Doorman 924-066 & 924-320, I found them on eBay.
Just do a search...
On my 2012 6 of the 8 were rotted after 6 years, every time I went up a drive diagonally the bottom washer would hit the frame mount. The 2 center are make of good rubber, the rest (4 corners & 2 radiator area) are made of a dense foam rubber material.
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Cab bushings have rotted out, lower section of bushing has deteriorated, bolt washer hitting frame when frame flexes.
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