Contour Enthusiasts Group Archives Forums General Troubleshooting 6 Error codes

okay my car starts sputtering under load , full throtte and from a stop . so i change wires and gap my plugs they are new NGK-Gpowers..

also last week the car ran mint so this seems to be a off and on thing with it missing .

so i get a code reader and pull these = ( PO301-PO302-PO303-PO305 ) missing in cyl 1235
and codes PO420 i think is bank 1 o2 , PO402 EGR flow excessive

what else could cause my missing other then the coil .

and the EGR what does this mean? is it any thing to worry about ? .

thanks for any help

The first thing to check is the SP wiring order and gap.
Duratec V6 Spark Plug wiring order

Firewall side
4- 6 -5 <--coil pack
3-2-1

1-2-3 <--engine
4-5-6
Radiator side

Spark Plug gap 0.054 inch

yes my plug wires are correct order ,
and my gap is 0.052

the car dont really seem to be getting any worse or better some times odd time it will run perfect ...

kinda stumped as to what would cause this .. other then coil .. any other ideas or things to look for

The P0420 could be related to the P03xx codes, so I would not worry about the P0420 for now.

As for the P0402 code, it could be any of the following.

From Ford CD Manual,
DTC P0402: CHECK FOR EGR FLOW AT IDLE WITH EGR VACUUM HOSE DISCONNECTED

Diagnostic Trouble Code (DTC) P0402 indicates that Self-Test has detected EGR flow at idle.

NOTE:
If DTC P1405 is in Continuous Memory, diagnose that first starting with �«HE50�».

Possible causes:

-- EGR valve stuck open.

-- EGR vacuum regulator (EGR V.R.) solenoid vent plugged or iced.

-- EVR circuit shorted to GND.

-- EVR circuit shorted to VREF.

-- Pinched/iced pressure hoses.

-- Improper vacuum hose connection.

-- Plugged/pinched EGR V.R. vacuum hose.

-- Plugged EGR tube.

-- Damaged EGR V.R. solenoid.

-- Damaged Differential Pressure Feedback EGR (D.P.F. EGR) sensor.

-- Damaged PCM.

In the past threads, most P0402 codes have been due to a faulty DPFE sensor.

Originally posted by chongo:

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Did someone call me out.......LOL

here you go.

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Also read this.
http://www.autozone.com/servlet/UiBroker?ForwardPage=/az/cds/en_us/0900823d/80/1b/ca/1e/0900823d801bca1e.jsp

Edit. As for the NGK plugs, the Contour is very finicky about plugs. Most on this site have had good luck with Autolites. Read this about plugs.
http://www.contour.org/ubbthreads/showflat.php?Cat=&Board=v6maint&Number=1203065&page=&view=&sb=5&o=&fpart=1&vc=1
and this
http://www.contour.org/ubbthreads/showflat.php?Cat=&Board=v6maint&Number=958650&page=0&view=collapsed&sb=5&o=&fpart=1

AWSOME !!
great info thank you for your time !

ill check this stuff out ASAP hopefully its some thing simple enuf ...

i some of the vac lines have been pulled and plugged i dont know why any where i can see i diagram with vac line routeing or some thing of sorts thanks

hey tony thanks for the help

one last question ... i found a broke wire on my alt it looks to be grey and its wraped in a cloth cover it looks to be on its own ...
any ideas what it is and what would be the best way to fix it or even get at the back of the alt ..

i stripped this grey wire and attached it to the power along with the red and black wire that was there .

i took the car for a spin batt light was not as bright but when i gave it gas the light went bright till i let off ..

so i unhooked the grey wire just incase .
any ideas what this wire is for ? where it goes ..

thinking this could be my prob to the car missing .

Look at this diagram from Goldentour. If the colors are correct, then the grey wire should go to the voltage regulator.

http://www.contour.org/ubbthreads/showflat.php?Cat=&Board=trouble&Number=1043318&page=&view=&sb=5&o=&fpart=all&vc=1

heres what my alt back looks like from what i can see ..
iv since done the power wire mod cut the red one extend it and so on ..

but sill left with the grey wire no clue to where it goes dident see ay thing that it could have broke off of ..

heres the pic any ideas ? as to where it belongs