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Ford V10 slight miss #4506719
09/03/17 07:41 PM
09/03/17 07:41 PM
Joined: Mar 2011
Posts: 286
NM, USA
pkunk Offline OP
pkunk  Offline OP
Joined: Mar 2011
Posts: 286
NM, USA
1999 Ford V10 in a F53/F550. About a month ago I traveled some miles in a real downpour and all was well until the last few miles. I've read about the air filter becoming swamped and was parked for 5 days so figured it had dried out and all would be good. Trip home engine had a slight miss but no codes on the scangage and fuel MPG stayed normal. Fast forward to yesterday, started and run around the driveway and the miss is still there-no codes. Looked top of engine over, no vermin sign, no wires loose, plugs changed 12k ago and engine has 89k always run strong. I haven't noticed any loss of power either but can hear/feel this slight miss. Any ideas?


2008 Mini Cooper Clubman (toad)
2000 Mercedes ML320
1994 Dodge 2500 Cummins
1999 Ford F53 V10 Coachman Motorhome 34ft
Re: Ford V10 slight miss [Re: pkunk] #4506733
09/03/17 07:54 PM
09/03/17 07:54 PM
Joined: Jan 2009
Posts: 13,972
Illinois
tig1 Offline
tig1  Offline
Joined: Jan 2009
Posts: 13,972
Illinois
I had a filter get wet in a hard rain storm. Did you actually inspect the air filter? Did you check for trouble codes with a code reader?


2007 Ford Fusion 235,000 miles
M1 0-20 EP
2017 Ford Fusion 60K
M1 0-20 EP
10,000 mile OCIs on both engines
M1 ATF and Valvoline LV
M1 10-30 in all OPE
MC filters

Re: Ford V10 slight miss [Re: pkunk] #4506734
09/03/17 07:54 PM
09/03/17 07:54 PM
Joined: Aug 2006
Posts: 9,882
Central Washington
Colt45ws Offline
Colt45ws  Offline
Joined: Aug 2006
Posts: 9,882
Central Washington
I would replace the air filter if it got wet.
They take forever to pop a code. You could probably drive it another 20k and it would never pop.

Does it get worse under a load?

Not long after I bought my car it started missing going up a hill in OD.
I literally got another coil and moved it from cylinder to cylinder driving up and down the same hill 8 times until I found the right hole and it finally stopped misfiring.
Now a days I have a bluetooth adapter and Forscan on my laptop to look at Mode 6 data.
In Mode 6 you can see the actual misfire 'counts' from each cylinder. Its pretty obvious then to find the one that is missing.


-Colton
2002 Ford Crown Vic PI 207k, Ex-Kootenai County, ID Unit #42
Down for engine swap
2003 Ford Crown Vic PI 75k
Castrol EDGE HM 5W30, Fram XG2
Re: Ford V10 slight miss [Re: tig1] #4506748
09/03/17 08:06 PM
09/03/17 08:06 PM
Joined: Mar 2011
Posts: 286
NM, USA
pkunk Offline OP
pkunk  Offline OP
Joined: Mar 2011
Posts: 286
NM, USA
Originally Posted By: tig1
I had a filter get wet in a hard rain storm. Did you actually inspect the air filter? Did you check for trouble codes with a code reader?

I did look at the filter-still looks new. My scangage is reporting nothing, well occasionallly I get a code for a bad O2 sensor but it's just a loose connection that corrects when I jiggle the wire.


2008 Mini Cooper Clubman (toad)
2000 Mercedes ML320
1994 Dodge 2500 Cummins
1999 Ford F53 V10 Coachman Motorhome 34ft
Re: Ford V10 slight miss [Re: Colt45ws] #4506752
09/03/17 08:10 PM
09/03/17 08:10 PM
Joined: Mar 2011
Posts: 286
NM, USA
pkunk Offline OP
pkunk  Offline OP
Joined: Mar 2011
Posts: 286
NM, USA
Originally Posted By: Colt45ws
I would replace the air filter if it got wet.
I'll try a new filter
They take forever to pop a code. You could probably drive it another 20k and it would never pop.

Does it get worse under a load?
It's always under a load

Not long after I bought my car it started missing going up a hill in OD.
I literally got another coil and moved it from cylinder to cylinder driving up and down the same hill 8 times until I found the right hole and it finally stopped misfiring.
Now a days I have a bluetooth adapter and Forscan on my laptop to look at Mode 6 data.
In Mode 6 you can see the actual misfire 'counts' from each cylinder. Its pretty obvious then to find the one that is missing.

What does that cost?


2008 Mini Cooper Clubman (toad)
2000 Mercedes ML320
1994 Dodge 2500 Cummins
1999 Ford F53 V10 Coachman Motorhome 34ft
Re: Ford V10 slight miss [Re: pkunk] #4506767
09/03/17 08:32 PM
09/03/17 08:32 PM
Joined: Aug 2006
Posts: 9,882
Central Washington
Colt45ws Offline
Colt45ws  Offline
Joined: Aug 2006
Posts: 9,882
Central Washington
Do you know what the O2 code is for? If its for the heater circuit its...meh. Not good but not a deal killer.
But if its the actual O2 sensor feedback then your fueling might be off on that bank.
It might be worth it to buy another O2 sensor and replace it rather than futz around with parts you know are bad.

If you have a laptop with bluetooth, you can get a bluetooth OBD2 adapter for like $20 from Amazon and the Forscan software is free.


-Colton
2002 Ford Crown Vic PI 207k, Ex-Kootenai County, ID Unit #42
Down for engine swap
2003 Ford Crown Vic PI 75k
Castrol EDGE HM 5W30, Fram XG2
Re: Ford V10 slight miss [Re: Colt45ws] #4506777
09/03/17 08:42 PM
09/03/17 08:42 PM
Joined: Mar 2011
Posts: 286
NM, USA
pkunk Offline OP
pkunk  Offline OP
Joined: Mar 2011
Posts: 286
NM, USA
Originally Posted By: Colt45ws
Do you know what the O2 code is for? If its for the heater circuit its...meh. Not good but not a deal killer.
But if its the actual O2 sensor feedback then your fueling might be off on that bank.
It might be worth it to buy another O2 sensor and replace it rather than futz around with parts you know are bad.

If you have a laptop with bluetooth, you can get a bluetooth OBD2 adapter for like $20 from Amazon and the Forscan software is free.

I don't remember what the O2 sensor codes were-have them written down somewhere. Do you have a link for the OBD2 adapter-there are alot of them?


2008 Mini Cooper Clubman (toad)
2000 Mercedes ML320
1994 Dodge 2500 Cummins
1999 Ford F53 V10 Coachman Motorhome 34ft
Re: Ford V10 slight miss [Re: pkunk] #4506782
09/03/17 08:51 PM
09/03/17 08:51 PM
Joined: Aug 2006
Posts: 9,882
Central Washington
Colt45ws Offline
Colt45ws  Offline
Joined: Aug 2006
Posts: 9,882
Central Washington
https://www.amazon.com/BAFX-Products-34t...ooth+OBD+reader
My friend bought this one and I had no trouble connecting with it.


-Colton
2002 Ford Crown Vic PI 207k, Ex-Kootenai County, ID Unit #42
Down for engine swap
2003 Ford Crown Vic PI 75k
Castrol EDGE HM 5W30, Fram XG2
Re: Ford V10 slight miss [Re: Colt45ws] #4506788
09/03/17 08:54 PM
09/03/17 08:54 PM
Joined: Mar 2011
Posts: 286
NM, USA
pkunk Offline OP
pkunk  Offline OP
Joined: Mar 2011
Posts: 286
NM, USA
Thanks. I was reading that alot of the clones were troublesome.


2008 Mini Cooper Clubman (toad)
2000 Mercedes ML320
1994 Dodge 2500 Cummins
1999 Ford F53 V10 Coachman Motorhome 34ft
Re: Ford V10 slight miss [Re: pkunk] #4506812
09/03/17 09:19 PM
09/03/17 09:19 PM
Joined: Apr 2010
Posts: 13,537
Chicago, IL
dparm Offline
dparm  Offline
Joined: Apr 2010
Posts: 13,537
Chicago, IL
Is the air filter exposed to the elements or something? I don't understand how an air filter can get wet short of driving through very deep water and literally submerging it.


2017 Chevrolet Corvette Grand Sport
Re: Ford V10 slight miss [Re: dparm] #4506859
09/03/17 10:41 PM
09/03/17 10:41 PM
Joined: Aug 2006
Posts: 9,882
Central Washington
Colt45ws Offline
Colt45ws  Offline
Joined: Aug 2006
Posts: 9,882
Central Washington
Originally Posted By: dparm
Is the air filter exposed to the elements or something? I don't understand how an air filter can get wet short of driving through very deep water and literally submerging it.

It might be something with how the intake going into the air box is placed. I don't know.
It might be a good idea to reroute it.


-Colton
2002 Ford Crown Vic PI 207k, Ex-Kootenai County, ID Unit #42
Down for engine swap
2003 Ford Crown Vic PI 75k
Castrol EDGE HM 5W30, Fram XG2
Re: Ford V10 slight miss [Re: Colt45ws] #4506897
09/04/17 12:22 AM
09/04/17 12:22 AM
Joined: Dec 2016
Posts: 7,098
Waco, TX
Linctex Online content
Linctex  Online Content
Joined: Dec 2016
Posts: 7,098
Waco, TX
Originally Posted By: Colt45ws

Now-a-days I have a bluetooth adapter and Forscan on my laptop to look at Mode 6 data.
In Mode 6 you can see the actual misfire 'counts' from each cylinder. Its pretty obvious then to find the one that is missing.


Man, that's the bee's knees.....


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: Ford V10 slight miss [Re: Linctex] #4506903
09/04/17 12:42 AM
09/04/17 12:42 AM
Joined: Aug 2006
Posts: 9,882
Central Washington
Colt45ws Offline
Colt45ws  Offline
Joined: Aug 2006
Posts: 9,882
Central Washington
Originally Posted By: Linctex
Originally Posted By: Colt45ws

Now-a-days I have a bluetooth adapter and Forscan on my laptop to look at Mode 6 data.
In Mode 6 you can see the actual misfire 'counts' from each cylinder. Its pretty obvious then to find the one that is missing.


Man, that's the bee's knees.....

Yup. On my car it has to be misfiring like 24% of the time to set a light. But, if its only doing it going up a hill in OD, it will have to get much worse before it will set a code. In the mean time every time you go up a hill you reach for the 'OD Off' button to keep the load down. Very annoying.
Go into mode 6 and see 14k misfires on one cylinder vs under a few k for the others? Well, theres your culprit.


-Colton
2002 Ford Crown Vic PI 207k, Ex-Kootenai County, ID Unit #42
Down for engine swap
2003 Ford Crown Vic PI 75k
Castrol EDGE HM 5W30, Fram XG2
Re: Ford V10 slight miss [Re: pkunk] #4506941
09/04/17 04:21 AM
09/04/17 04:21 AM
Joined: Oct 2008
Posts: 986
Northern, NY
Rob_Roy Offline
Rob_Roy  Offline
Joined: Oct 2008
Posts: 986
Northern, NY
Your V10 will not set a check engine light for a misfire. It is basically an OBD1 system. I went through the same thing with mine - it ended up being a bad coil.


2016 Ford Expedition EL Platinum
2016 Ford Expedition XLT
1999 Ford F350, V10
Re: Ford V10 slight miss [Re: pkunk] #4507004
09/04/17 07:19 AM
09/04/17 07:19 AM
Joined: Aug 2005
Posts: 919
dayton oh
kc8adu Offline
kc8adu  Offline
Joined: Aug 2005
Posts: 919
dayton oh
near 100% that it is bad coils/boots.
and a 99 will be obd2.

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