Multiple codes and miss
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Freshman User
Joined: Dec 2014
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Multiple codes and miss
So I'm stumped here.
Apparently yesterday (no known reason) my sons truck started to develop a miss (so it feels like to me).
2005 f150 5.4 auto 215000km 4x4 stx
No specific cylinder codes. All general codes.
P1000
P1464
P1550
P1703
P1780
None of which I can see causing the miss. No check engine lite, no other codes. Not sure what to look at next.
Any suggestions. I am starting to disconnect the coil packs one at a time and see if I can pin down the cylinder.
Apparently yesterday (no known reason) my sons truck started to develop a miss (so it feels like to me).
2005 f150 5.4 auto 215000km 4x4 stx
No specific cylinder codes. All general codes.
P1000
P1464
P1550
P1703
P1780
None of which I can see causing the miss. No check engine lite, no other codes. Not sure what to look at next.
Any suggestions. I am starting to disconnect the coil packs one at a time and see if I can pin down the cylinder.
Logistics Pro
Joined: Jan 2001
Posts: 3,740
Likes: 37
From: Central NYS
P1464, you prolly left the AC on when you ran the KOER test.
P1550, you prolly didn't cycle the steering wheel when you ran the KOER test.
P1703, did you cycle the BOO switch when you ran the KOER test?
P1780, did you cycle the transmission OD switch when you ran the KOER test?
P1550, you prolly didn't cycle the steering wheel when you ran the KOER test.
P1703, did you cycle the BOO switch when you ran the KOER test?
P1780, did you cycle the transmission OD switch when you ran the KOER test?
Thread Starter
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Freshman User
Joined: Dec 2014
Posts: 26
Likes: 0
P1464, you prolly left the AC on when you ran the KOER test.
P1550, you prolly didn't cycle the steering wheel when you ran the KOER test.
P1703, did you cycle the BOO switch when you ran the KOER test?
P1780, did you cycle the transmission OD switch when you ran the KOER test?
P1550, you prolly didn't cycle the steering wheel when you ran the KOER test.
P1703, did you cycle the BOO switch when you ran the KOER test?
P1780, did you cycle the transmission OD switch when you ran the KOER test?
Hotshot
Joined: Jan 2004
Posts: 19,763
Likes: 1,081
From: St Louis
To troubleshoot mild, non-MIL misfires, use your scan tool to go into the Mode $06 data and look at the individual cylinder misfire counts. See the relevant OBDII manual (download for free from www.motorcraftservice.com) for your specific model year for the PIDs and TIDs. Note that the misfire count data is often on a per-drive basis and resets when the power is cycled, so you'll need to read the counts during the same power-on cycle that you experienced them.
Mild misfires like these are common and are usually caused by a worn out spark plug, boot, spring, or a COP that's starting to break down internally.
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choate
1987 - 1996 F150 & Larger F-Series Trucks
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Apr 8, 2015 07:33 PM
