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2013 5.0 brief misfire on cylinders 2 and 4?

14382 Views 4 Replies 4 Participants Last post by  Oman 5.0
Kind of weird, my GT briefly misfired tonight on cylinders 2 and 4 and during a short 3rd gear pull on the highway tonight coming home from work. Car has just over 4500 miles on it, no mods other than suspension and a Roush axleback. I live in Orlando, Florida and it was one of the first relatively cold evenings... about 50 degrees outside. I was cruising at about 60 MPH and downshifted softly to 3rd, floored it to see how she would like the cooler weather, about 500 rpm shy of redline I let off pretty abruptly and it stuttered and the SES light came on. for the next mile it would shutter and misfire so I just cruised to the next exit. Before I even got there it was if it had reset itself and the SES light went away, no more misfiring. When I stopped I hooked up my bluetooth OBD2 adapter and read the codes with Torque on my phone. It showed Cylinder 2 and 4 misfire pending.

This whole experience brings back nightmares that I had with my 335i misfiring under added boost.... I had to replace plugs, a coilpack, and an injector to solve that issue... I hope this was just a nonevent or a hiccup caused by the change in temperature or something....
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Kind of weird, my GT briefly misfired tonight on cylinders 2 and 4 and during a short 3rd gear pull on the highway tonight coming home from work. Car has just over 4500 miles on it, no mods other than suspension and a Roush axleback. I live in Orlando, Florida and it was one of the first relatively cold evenings... about 50 degrees outside. I was cruising at about 60 MPH and downshifted softly to 3rd, floored it to see how she would like the cooler weather, about 500 rpm shy of redline I let off pretty abruptly and it stuttered and the SES light came on. for the next mile it would shutter and misfire so I just cruised to the next exit. Before I even got there it was if it had reset itself and the SES light went away, no more misfiring. When I stopped I hooked up my bluetooth OBD2 adapter and read the codes with Torque on my phone. It showed Cylinder 2 and 4 misfire pending.

This whole experience brings back nightmares that I had with my 335i misfiring under added boost.... I had to replace plugs, a coilpack, and an injector to solve that issue... I hope this was just a nonevent or a hiccup caused by the change in temperature or something....
TSB
12-12-8 CHECK ENGINE LIGHT ILLUMINATED - DTCS P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308 - NO DRIVEABILITY SYMPTOMS - BUILT ON OR BEFORE 11/30/2012

Publication Date: December 17, 2012

FORD: 2013 Mustang


ISSUE:
Some 2013 Mustang vehicles equipped with a 5.0L engine and manual transmission and built on or before 11/30/2012 may exhibit a Check Engine Light illuminated accompanied by any combination of diagnostic trouble codes (DTCs) P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307 and/or P0308 stored in continuous memory only. Additionally, there will be no apparent drivability symptoms present and no DTCs present which are not listed.

ACTION:
Follow the Service Procedure steps to correct the condition.

SERVICE PROCEDURE

Using IDS, perform self test on the PCM to check for both continuous memory (CMDTCs) and key on engine running (KOER) DTCs.
If any DTCs P0300-P0308 are present in KOER and/or a driveability concern, such as cylinder misfire, is present, do not continue with this article. Refer to Powertrain Control/Emissions Diagnosis (PC/ED) manual for normal diagnostics.
If any DTCs P0300 - P0308 are present in continuous memory and there is no discernible drivability concern, such as cylinder misfire, present, proceed to Step 2.
Reprogram the powertrain control module (PCM) to the latest calibration using IDS release 82.02 and higher. This new calibration is not included in the VCM 2012.11 DVD. Calibration files may also be obtained at Buy Motorcraft Parts Online | Official Motorcraft Auto Parts Site | FordParts.com.
Using IDS, perform the Misfire Monitor Neutral Profile Correction procedure.

WARRANTY STATUS:
Eligible Under Provisions Of New Vehicle Limited Warranty Coverage And Emissions Warranty Coverage
IMPORTANT: Warranty/ESP coverage limits/policies/prior approvals are not altered by a TSB. Warranty/ESP coverage limits are determined by the identified causal part and verified using the OASIS part coverage tool.

OPERATION DESCRIPTION TIME
121208A 2013 Mustang: Check DTCs Reprogram PCM Perform The Misfire Neutral Correction Procedure Includes Time To Clear Codes After Repair (Do not Use With Any Other Labor Operations) 0.3 Hr.

DEALER CODING
BASIC PART NO. CONDITION CODE
RECALEM 04
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