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P0303 Diagnostic Trouble Code Discussion for May 2019

Cylinder 3 Misfire Detected


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Trouble Ticket Help Requests for DTC P0303
Help Request Posted
2005 Ford Explorer Sport Trac XLS 4.0L Misfire VIN: 1FMZU77KX5
P0303: Misfire cylinder number three. ... well maintained. Has misfire codes P0303 and P0304. No distinct misfires felt. Using IDS cylinder contibution cylinders 3 and 4 are somewhat low at idle consistently. On road test as RPM increases contribution from 3 and 4 diminishes until MIL flashes...
May 04, 2019
2012 Mercedes-Benz C250 1.8L Excessive Emissions, Misfire, Poor Fuel Economy, MIL Lamp on VIN: WDDGJ4HB7C
P0303: Misfire 3. car came in running,found fuel trims were at max.i used propane and found leaks around intake so I replaced intake gaskets and rechecked still seams that the propane will affect the fuel trim.was wondering what I may be missing?no other leaks are noticeabl...
May 24, 2019
2011 Volkswagen Tiguan S 2.0L MIL Lamp on, 2500 rpm VIN: WVGBV7AX7B
P0303: testing and results. This vehicle was bought at auction. Another shop already had a look at it. We went through the basis and then some. The engine looks brand new. There is no history on car or engine. This car when revved up to 2500 at a stop and while driving the CEL will s...
May 31, 2019