02 sensors cause misfire?
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From: Iowa
02 sensors cause misfire?
We have a 99 f-150 with the 4.6 engine. We had a code p0304 and p0153. I cleared the codes and replaced the plug and wire. Now i still get code p0304 but the p0153 hasnt came back. Instead p0133 came back along with the cyl 4 misfire. Could the 02 sensors be the cuase of the misifre?
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Joined: Oct 2002
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From: St. Louis (Out in the woods)
The O2 sensor won't cause misfires.
Look for problems in the ingition and fueling systems first, then base engine mechanical concerns.
Swap your coil packs and see if the misfire moves to the other side. If so, you need a new coil pack.
Steve
Look for problems in the ingition and fueling systems first, then base engine mechanical concerns.
Swap your coil packs and see if the misfire moves to the other side. If so, you need a new coil pack.
Steve
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From: Iowa
Originally Posted by jdtech65
I cleared the codes and replaced the plug and wire.
So if the front 02 sensors cant casue a misfire and i have replaced the spark plug and plug wire where do i look next?
This engine doesn't have coil packs.
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Originally Posted by jdtech65
So if the front 02 sensors cant casue a misfire and i have replaced the spark plug and plug wire where do i look next?
This engine doesn't have coil packs.
This engine doesn't have coil packs.
I does not have COP's (coil-on-plug), but it certainly has 2 coil packs.
Hint - just follow the plug wires
