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2001 Ford Ranger Edge Reg Cab 3.0L

2001 Ford Ranger
Trim Info:
Rear Wheel Drive, Reg Cab 6' Styleside
17 mpg city / 22 mpg hwy
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October 20, 2012, 2:48 pm

Robbi K

Question: I replaced the plugs and plug wires. Why is the engine still running rough?

Check engine light has come on. CODE went away after computer was reset. Idles rough. Hesitates on acceleration. Sputters when up to speed. Odometer 90175. Normally runs like a new truck. Frustrated, and don't know what to do next. Any suggestions?;

October 27, 2012, 9:58 am

Ron W
Expert Mechanic

If the check engine light is on, I'll need the code to help you figure out what is happening. Even if it turned off, the code should remain in memory.

Lots of things can cause sputtering, but the code will help us narrow down the possibilities.

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October 27, 2012, 1:48 pm

Robbi K

Code P0303, P0316.... Misfire in #3. Tested the plugs and plug wires and they are good. Could it be the coil pack going bad or would it be a sensor in need to replace? Again, I have no engine light on at this point and haven't since I changed the plugs and plug wires out.

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October 27, 2012, 9:41 pm

Ron W
Expert Mechanic

P0303 Code - Cylinder #3 Misfire
P0316 - Engine Misfire Detected on Startup

Those codes indicate a misfire on cylinder #3 during the first 1000 or so revolutions of the engine just after start up.

FORD TSB 05-26-3 has information regarding these codes and your vehicle. Here's a link to the TSB

It talks about a exhaust valve seat recession causing a loss of compression. A compression test of the cylinder is the next step.

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