Question about 2003 Ford Focus
Codes p0316,p0300 how to fix
I had a similar problem with my '02 Focus. I found the actual wires leading to the harness had broken. From the codes I would say you have lost a good connection with cylinders 2 and 3. My Focus started to hesitate and jump until normal temps were reached. Then it jumped and hesitated all the time. I went to the junk yard and got a replacement wire set for $3. I cut the current ones out and used heat shrink and electrical tape to reconnect the new. Worked like magic.
Here is an excerpt from the code problem below. Good luck
- Ignition coils harness is open or shorted
- Ignition coils circuit poor electrical connection
Read more: http://engine-codes.com/p0300_ford.html#ixzz3AEUWtCDs
Posted on Aug 13, 2014
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Posted on Jan 02, 2017
these engines did have some exh valve issues, service bulletin 05-26-3. one other thing to verify is that the cam synronizer (CMP) is correctly installed. if its not right on, its way off.
Posted on Oct 14, 2009
try replacing the DPFE, go to the ford dealer and take them your VIN and ask them for a DPFE, your egr valve is sticking open due to the failure of the DPFE and causing multiple misfires in your engine
Posted on Oct 27, 2011
The 300 is random misfires & the 316 is misfires on the first
1000 revolutions,such as when the motor is first started
Your only working on cylinder #3 the PO303
If you have individual cop coils,replace that one
If you have a motor with a module for several cyclinders,
then you may be best to have a shop diagnose,so as
not to waste money on the wrong parts
Posted on Nov 18, 2012
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