00' 4.0L Codes P0303 & P1151 and planned fix input - Ranger-Forums - The Ultimate Ford Ranger Resource

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00' 4.0L Codes P0303 & P1151 and planned fix input

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Old 12-08-2018
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Location: Ocean View, Hawaii
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00' 4.0L Codes P0303 & P1151 and planned fix input

I recently got an 00' 4.0 L automatic with 186K miles, said to have new plugs & wires, the check engine light was on.
On the way home (about 60 miles) had a stutter between 50 to 60 mph, drove it like I stole it & when got home had cleared up and ran nice. The stutter came back a couple hundred mile later, but from 30 to 40 mph, mpg dropped drastically on first fill up after topping off day bought it.

When OBDII came in got codes P0303 & P1151, said cyl 3 was misfiring, reset to turn off check engine light. Drove few miles and CE light came back (no surprise there) will check for codes again later today & see if anything changed. Tried the Clear Flooded engine routine, didn't try to fire or start.

Plan is to get new injector (MOTORCRAFT CM4895 {#CM4867, F87Z9F593HA}) for cyl 3, new fuel filter and both upstream O2 sensors, don't know if the O2 sensors have been replaced or not, with 186k miles going to replace them to be sure.

Anything else I should be looking at and possibly replacing at this point? I'll post results after the parts get here from RockAuto for future reference. Which are the best up stream O2 sensors to get, would rather get whatever are the best ones and not try to save a few pennies on cheapie ones. :-)

Cheers, Allen
 
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