2004 Ford F-150 Engine Shudder
#1
2004 Ford F-150 Engine Shudder
My 2004 started shuddering at 45mph or while going up a 4-6 degree hill.
It was well past the suggested 100,000 mile spark plug change. I thought about changing the plugs myself until I heard that they could possibly break and would be difficult to remove.
I took the truck to a shop and had the plugs changed.
For about 2 days it ran okay, but the shudder returned and we got PO303 (mis-fire cylinder #3), PO316 (mis-fire on start-up), and PO171 (system to lean, bank one) Codes. The shop replaced the fuel injector on cylinder #3 and again the truck ran okay for about 2 days.
My son and I cleaned the other three injectors on bank one, cleaned most of the sensors and the MAF.
That work cleared the PO171 Code, but we still had a mis-fire on cylinder #3.
We swapped the spark plugs between #1 and #3 and got a mis-fire on cylinder #1.
We replaced the plug on cylinder #1 and that cleared the code.
The truck is running great.
It was well past the suggested 100,000 mile spark plug change. I thought about changing the plugs myself until I heard that they could possibly break and would be difficult to remove.
I took the truck to a shop and had the plugs changed.
For about 2 days it ran okay, but the shudder returned and we got PO303 (mis-fire cylinder #3), PO316 (mis-fire on start-up), and PO171 (system to lean, bank one) Codes. The shop replaced the fuel injector on cylinder #3 and again the truck ran okay for about 2 days.
My son and I cleaned the other three injectors on bank one, cleaned most of the sensors and the MAF.
That work cleared the PO171 Code, but we still had a mis-fire on cylinder #3.
We swapped the spark plugs between #1 and #3 and got a mis-fire on cylinder #1.
We replaced the plug on cylinder #1 and that cleared the code.
The truck is running great.
#3
#4
#5
Engine Shudder
Thanks for your reply.
I will use Motorcraft when I change the plugs, again, which will be at approximately 40k and not at the recommended 80K miles.
I will also use the 1 part plugs, which I did not use this time due to cost quote from 3 or 4 sources ... $22 - $30 per plug vs $10 per plug.
I will use Motorcraft when I change the plugs, again, which will be at approximately 40k and not at the recommended 80K miles.
I will also use the 1 part plugs, which I did not use this time due to cost quote from 3 or 4 sources ... $22 - $30 per plug vs $10 per plug.
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t_money662
1997-2006 Expedition & Navigator
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06-26-2006 07:08 PM