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Jul 12, 2007 | 04:51 AM

johnzie

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cuts out..no reason.!!

Hi....Am posting for a work collegue who hasn't got internet...

He's got a 95 F350 PSD dually...when driving, back off the throttle and it cuts out..turns over ok...starts eventually..but blows white smoke for a few seconds..then ok for miles.....then it'll cut out again.same thing...starts after a bit....white smoke.........dosn't happen all the time.....just now and then....He's recently changed fuel filter, checked lines etc...all seem ok.........Could part of the problem be bio..?....A lot of the service stations here run 5% bio.......Any help would be appreciated...

Thanks.... Chris.....

Jul 12, 2007 | 05:50 AM

FARM69

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From: Kearney, Nebr

Sounds like CPS to me.

Jul 12, 2007 | 07:21 AM

willbd

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From: Woodburn, OR

it could be the CPS or burnt wiring harness under the valve cover.

Jul 12, 2007 | 07:27 AM

Copedawg

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From: Gambrills

from what I understand about quick diognosting the CPS is "If the tachometer does not move when cranking then the CPS is bad" Is this correct?

Jul 12, 2007 | 07:33 AM

willbd

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From: Woodburn, OR

Quote:

Originally Posted by Copedawg

from what I understand about quick diognosting the CPS is "If the tachometer does not move when cranking then the CPS is bad" Is this correct?

Some times... If the engine dies and willl not restart. First thing to check is tach.

Jul 12, 2007 | 05:18 PM

FARM69

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From: Kearney, Nebr

Sometimes they just cut in and out though from what I understand. Mine has been starting to show CPS symptoms but hasn't completly died yet. Knock on wood.

Jul 17, 2007 | 10:54 AM

erl_berner

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From: Santee, CA

Mine started stalling at odd times (ie. braking ???) so I changed out the CPS with the new $25 version from FORD. It has not stalled since.
course now I have hard cold start issues.... (*&(*&(*&!!!

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Jul 17, 2007 | 12:03 PM

erl_berner

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From: Santee, CA

Just changed the CPS and the oil has 1600 Miles on it...

Jul 17, 2007 | 12:20 PM

#10

tjbeggs

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From: Silver Lake Dunes, MI

oh sorry Erl_berner I was talking to the OP. Your issue are more than likely Glow plug related. Try plugging in the block heater and see if it helps. I know your in Cali but it still could be.

Jul 18, 2007 | 04:29 PM

#11

johnzie

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update

TJ..........Thanks to you all everyone else for the info.......Oil has recently been changed...he used full synthetic...but isn't sure if the spec is correct....we went to our local oil distributor and x- matched the grade and got a UK equivilent spec... Also called a dealer in USA for part number of CPS...located and bought one off Ebay.Waiting for delivery from the USA...Will keep you posted....

Thanks again to all.................... Chris...

Jul 18, 2007 | 04:45 PM

#12

tjbeggs

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From: Silver Lake Dunes, MI

oh boy another out of country PSD. that would be an experience! Caseydudem is in Germany and he has the same fun time with parts and what not. Keep us posted!

Jul 18, 2007 | 06:14 PM

#13

Suber

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From: Albuquerque

Quote:

Originally Posted by Copedawg

from what I understand about quick diognosting the CPS is "If the tachometer does not move when cranking then the CPS is bad" Is this correct?

I think you are thinking of the speed sensor in the rear diff. When the tach and speedo start acting up it is the speed sensor.

Jul 18, 2007 | 06:20 PM

#14

c00nhunterjoe

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From: Belair md

if you have a crank no start concern that is when the tach method is used, its the same as watching the "rpm" pid on the scanner

Jul 25, 2007 | 05:19 PM

#15

johnzie

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update

New CPS arrived from the USA yesterday....work collegue called before.......Fitted up.20 or so mile road test........drives a dream........Said he wished he'd got a spare one now......Doh !!!..

Thanks to all who offered advice etc...much appreciated...

Chris..