2002 psd chuggin....help
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2002 psd chuggin....help
i have 2002 crew cab psd...the engine seems to suck air or loose fuel for split second going down the road hence "the chug"....or surge then its seems to be normal....im sure someone has had this b4 im fairly new to diesels,can someone point me in the right direction...thanks! no trouble codes
Post Fiend
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From: Pea Ridge, AR
Have you tried a new CPS?
That would be the first thing, I would think, and about the only part that I can recommend just "throwing" at it without further diagnosis.
Tin nut on the IPR?
Oil level and condition fine?
That would be the first thing, I would think, and about the only part that I can recommend just "throwing" at it without further diagnosis.
Tin nut on the IPR?
Oil level and condition fine?
Post Fiend
Joined: May 2009
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From: Pea Ridge, AR
On the IPR there is a nut that holds the solenoid on to the valve body, they can fall off and cause a stumble.
IPR Rebuild - Large Pics.pdf
There are many possibilities and maybe you could elaborate a little on the issue.
Are you getting a SES(Service Engine Soon) light?
You could try removing the throttle pedal assembly as well, and cleaning up the IVS(Idle Validation Switch) and TPS(Throttle Position Switch) with some electronics cleaner. Depending on year and if you have adjustable pedals there was a recall for pedal assemblies as well.
Just trying to think of possibilities without having diagnostic information.
IPR Rebuild - Large Pics.pdf
There are many possibilities and maybe you could elaborate a little on the issue.
Are you getting a SES(Service Engine Soon) light?
You could try removing the throttle pedal assembly as well, and cleaning up the IVS(Idle Validation Switch) and TPS(Throttle Position Switch) with some electronics cleaner. Depending on year and if you have adjustable pedals there was a recall for pedal assemblies as well.
Just trying to think of possibilities without having diagnostic information.
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there is no ses light or trouble codes...yes i does have adjustable pedals....there seems to be a slight miss in motor noticable at low rpm or idle, the fraction of second "chug" is very intermittent and seems to happen at any rpm even idle sometimes even kill motor completly. it seems that i could press accelerator what seems quite a bit before rpms move up. possable tps?
Post Fiend
Joined: May 2009
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From: Pea Ridge, AR
there is no ses light or trouble codes...yes i does have adjustable pedals....there seems to be a slight miss in motor noticable at low rpm or idle, the fraction of second "chug" is very intermittent and seems to happen at any rpm even idle sometimes even kill motor completly. it seems that i could press accelerator what seems quite a bit before rpms move up. possable tps?
The stumble even at idle pretty much eliminates the TPS issue. If it was only while driving you could try setting the cruise control to see if it went away.
Is the nut on the IPR?
Can you ohm out the solenoid for the IPR?
Where did the CPS come from? Parts house or Ford/International?
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tin nut is on there, cps came from parts house grey plug....where is solonoid for ipr? i can do yet tonight thx
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Post Fiend
Joined: May 2009
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From: Pea Ridge, AR
The solenoid(coil) is what the tin nut is holding on.
I would try a cps from Ford too, I know some(probably many) have had no issue at all with parts store CPS's but there are quite a few with flaky issues or issues with when the wipers are on, just weird stuff really. Plus it's a relatively cheap part, that if it doesn't take care of your issue you can keep a spare in the glovebox or console in case it does go out. It's one of the few things that will just kill the motor like you turned off the key.
I would try a cps from Ford too, I know some(probably many) have had no issue at all with parts store CPS's but there are quite a few with flaky issues or issues with when the wipers are on, just weird stuff really. Plus it's a relatively cheap part, that if it doesn't take care of your issue you can keep a spare in the glovebox or console in case it does go out. It's one of the few things that will just kill the motor like you turned off the key.
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Post Fiend
Joined: May 2009
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From: Pea Ridge, AR
Behind the nut is there a spacer?
On the valve itself there is a coil that goes on then it has a spacer then the nut. Without the spacer it would cause the symptoms you are describing.
Here is a pic
On the valve itself there is a coil that goes on then it has a spacer then the nut. Without the spacer it would cause the symptoms you are describing.
Here is a pic
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yes there is a spacer, where sensor plugs in it moves side to side a good half inch either way...checking ohms i just touch positive lead to the nut and/or spacer?? if so it bounces all over the charts, sometimes resting at -.04
Post Fiend
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From: Pea Ridge, AR
Sounds like your connector on the coil is very loose if I am understanding you right?
Is the entire coil rotating? If so that's probably ok, could use a touch of tightening, but ok.
If the connector is moving inside of the coil, that is not good, and unfortunately I don't think you can just buy a coil, you have to buy the entire IPR.
To check the ohms, it is a 2 pin connector, so a lead on each measuring the resistance of the coil.
Is the entire coil rotating? If so that's probably ok, could use a touch of tightening, but ok.
If the connector is moving inside of the coil, that is not good, and unfortunately I don't think you can just buy a coil, you have to buy the entire IPR.
To check the ohms, it is a 2 pin connector, so a lead on each measuring the resistance of the coil.
Post Fiend
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From: Pea Ridge, AR
If just the connector is moving, then I think you found your culprit. The connector is just how the wiring to energize the magnetic field is junctioned. The connector needs to be secure to prevent shorting out the coil from movement. If you are familiar with a coil it is usually just a lot of wrapped small gauge wire. Any movement could potentially short the coil or change resistive values which would move the needle inside the IPR valve closing the path of oil flow to the injectors, or in your case briefly happening and causing a stumble.