help with diagnosis report please - (Ford Contour)

5

Asked by Jan 18, 2017 at 07:25 PM about the 1998 Ford Focus

Question type: Maintenance & Repair

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VIN: 1FALP65L5WK175717 Report#: 101
Vehicle: 1998 FORD CONTOUR Date of Report: 1/18/2017 8:48:13
AM
Engine: V6, 2.5L; DOHC; 24V Mileage Reported: 60,000
POWERTRAIN DIAGNOSTIC TROUBLE CODE INFORMATION

MIL DTC
P0305   Cylinder Number 5 Misfire Detected Severity Level: Moderate
   Quick Code Summary:
Code P0305 indicates that Cylinder 5 had too many misfires within a
predetermined period of time.

This condition will prevent the vehicle from running at its optimum efficiency
and fuel economy may suffer.

A misfire contributes to loss of power, higher emissions and can damage
components.
   Conditions For Setting This Code:
DTC P0136, P0156, P0171, P0172, P0175, P1130 and P1150 not set,
engine started, engine running under positive torque conditions, and the
PCM detected a misfire a misfire in Cylinder 5 during the 200 revolution
(Catalyst) or 1000 revolution (High Emissions) period. Note: If the misfire is
severe, the MIL will flash on/off on the 1st trip!
   Possible Causes:
Air leak in the intake manifold, or in the EGR or PCM system

Base engine mechanical problem that affects only Cylinder 5

Fuel delivery component problem that affects only Cylinder 5 (i.e., a
contaminated, dirty or sticking fuel injector)

Ignition system problem (coil, plug) that affects only Cylinder 5

TSB 02-16-2 contains repair help for this code (LS & T-Bird)

TSB 03-14-4 contains repair help for this code for COP ignition

Copyright © 2010 IEC. All Rights Reserved.
Portions © 2012 Cengage Learning. All rights reserved. Used under license.
Technical Service Bulletins: 1
OEM#s Issue Date TSB Description Type View
99-12-1 1/12/1999 MALFUNCTION INDICATOR LAMP (MIL)
ILLUMINATED—DIAGNOSTIC TROUBLE CODES (DTCS) P0300, P0301,
P0302, P0303, P0304, P0305, AND/OR P0306 STORED IN MEMORY—
VEHICLES BUILT THROUGH 2/2/1998 WITH 2.5L ENGINE * Technical,
Information VIEW TSB
Stored Codes
P0174   Fuel System Too Lean (Cylinder Bank 2)
   Conditions For Setting This Code:
Engine started, engine running at cruise speed for 3 to 4 minutes, and the
PCM detected the Bank 2 Adaptive Fuel Control System reached its rich
correction limit (due to a lean A/F ratio condition).
   Possible Causes:
Air leaks after the MAF sensor, or leaks in the PCV system

Exhaust leaks before or near where the HO2S is mounted

Fuel injector(s) restricted or not supplying enough fuel

Fuel system not supplying enough fuel during high fuel demand conditions
(e.g., the fuel pump may not supply enough fuel)

Leaking EGR gasket, or leaking EGR valve diaphragm

MAF sensor dirty (causes PCM to underestimate airflow)

Vehicle running out of fuel or engine oil dip stick not seated

TSB 1-20-5 contains a repair procedure for this trouble code

Copyright © 2010 IEC. All Rights Reserved.
Portions © 2012 Cengage Learning. All rights reserved. Used under license.
P0305   Cylinder Number 5 Misfire Detected
   Conditions For Setting This Code:
DTC P0136, P0156, P0171, P0172, P0175, P1130 and P1150 not set,
engine started, engine running under positive torque conditions, and the
PCM detected a misfire a misfire in Cylinder 5 during the 200 revolution
(Catalyst) or 1000 revolution (High Emissions) period. Note: If the misfire is
severe, the MIL will flash on/off on the 1st trip!
   Possible Causes:
Air leak in the intake manifold, or in the EGR or PCM system

Base engine mechanical problem that affects only Cylinder 5

Fuel delivery component problem that affects only Cylinder 5 (i.e., a
contaminated, dirty or sticking fuel injector)

Ignition system problem (coil, plug) that affects only Cylinder 5

TSB 02-16-2 contains repair help for this code (LS & T-Bird)

TSB 03-14-4 contains repair help for this code for COP ignition

Copyright © 2010 IEC. All Rights Reserved.
Portions © 2012 Cengage Learning. All rights reserved. Used under license.
Technical Service Bulletins: 1
OEM#s Issue Date TSB Description Type View
99-12-1 1/12/1999 MALFUNCTION INDICATOR LAMP (MIL)
ILLUMINATED—DIAGNOSTIC TROUBLE CODES (DTCS) P0300, P0301,
P0302, P0303, P0304, P0305, AND/OR P0306 STORED IN MEMORY—
VEHICLES BUILT THROUGH 2/2/1998 WITH 2.5L ENGINE * Technical,
Information VIEW TSB
Pending Codes
P0171   Fuel System Too Lean (Cylinder Bank 1)
   Conditions For Setting This Code:
Engine started, engine running at cruise speed for 3 to 4 minutes, and the
PCM detected the Bank 1 Adaptive Fuel Control System reached its rich
correction limit (due to a lean A/F ratio condition).
   Possible Causes:
Air leaks after the MAF sensor, or leaks in the PCV system

Exhaust leaks before or near where the HO2S is mounted

Fuel injector(s) restricted or not supplying enough fuel

Fuel system not supplying enough fuel during high fuel demand conditions
(e.g., the fuel pump may not supply enough fuel)

Leaking EGR gasket, or leaking EGR valve diaphragm

MAF sensor dirty (causes PCM to underestimate airflow)

Vehicle running out of fuel or engine oil dip stick not seated

TSB 01-20-5 contains a repair procedure for this trouble code

Copyright © 2010 IEC. All Rights Reserved.
Portions © 2012 Cengage Learning. All rights reserved. Used under license.

FREEZE FRAME INFORMATION

Parameter Description Results
DTC for which Freeze Frame was Stored P0305
Fuel System 1 Status Closed Loop
Fuel System 2 Status Not Supported
Calculated LOAD Value 28.63 %
Engine Coolant Temp 145.40 °F
Short Term Fuel Trim - Bank 1 32.81 %
Long Term Fuel Trim - Bank 1 -3.91 %
Short Term Fuel Trim - Bank 2 32.81 %
Long Term Fuel Trim - Bank 2 1.56 %
Engine RPM 790.50 rpm
Vehicle Speed Sensor 0.00 mph

MONITOR STATUS

Monitor Name Monitor Icon Status
MIL (Check Engine Light) ON
Misfire Monitoring Complete
Fuel System Monitoring Complete
Comprehensive Component Monitoring Complete
Catalyst Monitoring Complete
Heated Catalyst Monitoring Not Supported
Evaporative System Monitoring Complete
NMHC Monitoring Not Supported
NOxAdsorber Monitoring Not Supported
Secondary Air System Monitoring Not Supported
Oxygen Sensor Monitoring Complete
Oxygen Sensor Heater Monitoring Complete
EGR System Monitoring Complete
Boost Pressure System Monitoring Not Supported
Exhaust Gas Sensor Monitoring Not Supported
PM Filter Monitoring Not Supported
Thank you for using Innova. Please Drive Safely.
Copyright © 2017 IEC. All Rights Reserved. (V3.1.0.0).

6 Answers

71,355

These things need to get fixed in order to pass emissions. Are you looking for a break down on how to fix this stuff?

Best Answer
71,355

If you read this closely, it tells you that you have a random misfire, intake manifold and EGR leaks, and some other emissions problems.

1 of 1 people found this helpful.
47,755

When was the last time the spark plugs and the coils were changed?

1 of 1 people found this helpful.
5

Yes, I have found a couple vac leaks, but not sure if there are more. I cleaned and tested the MAF, and the coil tests ok too. I replaced the one plug in cyllinder 5, to see if this would solve the misfire, but it hasn't. The wire tests ok. Just hoping to get some troubleshooting suggestions.

71,355

Things to check...EGR Valve and base gasket & hoses for vacuum leak, snug up the intake manifold bolts, take the throttle body off and check or replace the base gasket, clean the throttle bode while it is off, Make sure the oil dip-stick is seated all the way down, check from the exhaust manifold down pass the O2 sensors for any air leaks, if there is a hole around or before the O2 sensor, it will not read correctly and set a code. The po305 has to be fixed, check the cylinder compression otherwise......P0305 FORD - Cylinder 5 Misfire...Possible causes; Faulty spark plug 5, Clogged or faulty fuel injector 5, Faulty ignition coil 5, Fuel injector 5 harness is open or shorted, Fuel injector 5 circuit poor electrical connection, Ignition coil 5 harness is open or shorted, Ignition coil 5 circuit poor electrical connection, Insufficient cylinder 5 compression, Incorrect fuel pressure Intake air leak.

1 of 1 people found this helpful.
71,355

Oh yea, check the pcv valve, replace it and check the vacuum hose and system.

1 of 1 people found this helpful.

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