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  #1  
Old May 11th, 2014, 05:19 PM
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300TDi rpm issues

I just drove from OK to NY and the trip went smoothly sans coolant leak. But starting in Memphis the rpms have been acting strangely. At lights, idling, it begins to 'hunt' +/- 150rpm and turning the steering wheel sometime sends the rpms plummeting.

Any thoughts?
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  #2  
Old May 11th, 2014, 05:59 PM
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Failing PS pump.
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  #3  
Old May 11th, 2014, 08:24 PM
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Quote:
Originally Posted by rdavisinva View Post
Failing PS pump.
And that would explain the hunting?
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  #4  
Old May 12th, 2014, 01:25 AM
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I would suggest this is indicating a lack of power/fuel. How long has it been since you changed the fuel filter?
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Old May 12th, 2014, 08:41 AM
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Automatic or manual ? Have you changed your fuel filter to see if it solves the problem ? Smoke ?
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  #6  
Old May 12th, 2014, 02:37 PM
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Quote:
Originally Posted by Uncle Douglas View Post
Automatic or manual ? Have you changed your fuel filter to see if it solves the problem ? Smoke ?
R380.

All of this started after I changed the fuel filter two weeks ago, the engine has not been the same, but this past road trip started the hunting.

During the trip moderate to large amount of white smoke; this has seized since getting to NY.



PS. The plummet when using the steering wheel is now, all the sudden, much less dramatic.

PSS. Since this started post filter change, I am leaning towards that being the issue. However could it be head gasket?
Either way I am taking it to RoverTek on Sunday to go over it
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Old May 12th, 2014, 03:32 PM
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Never had one act any way other than the same or better after changing a fuel filter. I asked about auto because not knowing what you have there was an electronic pump version offered with auto trans trucks in 97/98.

No idea what your issue might be. I'd suspect an ip issue or timing. Chris will get you sorted.
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  #8  
Old May 15th, 2014, 12:37 AM
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Looks like the truck was a Tdi conversion. Was the submerged fuel pump removed from the "in tank pump unit"
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  #9  
Old May 15th, 2014, 07:50 AM
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If it is a conversion was the original gas fuel filter removed???
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Old May 15th, 2014, 08:57 AM
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Quote:
Originally Posted by IvanKV View Post
I just drove from OK to NY and the trip went smoothly sans coolant leak. But starting in Memphis the rpms have been acting strangely. At lights, idling, it begins to 'hunt' +/- 150rpm and turning the steering wheel sometime sends the rpms plummeting. Any thoughts?
If you just fill up bad gss
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  #11  
Old May 16th, 2014, 12:32 PM
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Quote:
Originally Posted by Rocky View Post
If you just fill up bad gss
Continues after three fill ups, bad fuel unlikely

Quote:
Originally Posted by Dennis View Post
Looks like the truck was a Tdi conversion. Was the submerged fuel pump removed from the "in tank pump unit"
I have no idea

Quote:
Originally Posted by ezzzzzzz View Post
If it is a conversion was the original gas fuel filter removed???
Yes, I replaced the fuel filter. Chris did have to bleed the system, there was air in it.
After he bleed it and I replaced the rusty-clay water that was my coolant, the engine is behaving better but when I let off the gas white smoke comes out(only for a couple of minutes after start up)
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Old May 16th, 2014, 01:25 PM
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Double-check/tighten all of your fuel fittings from the tank, forward.
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  #13  
Old May 16th, 2014, 03:59 PM
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Quote:
Originally Posted by IvanKV View Post
Continues after three fill ups, bad fuel unlikely



I have no idea



Yes, I replaced the fuel filter. Chris did have to bleed the system, there was air in it.
After he bleed it and I replaced the rusty-clay water that was my coolant, the engine is behaving better but when I let off the gas white smoke comes out(only for a couple of minutes after start up)
white smoke on startup that goes away sounds like an injector not "popping" open correctly.
When you have a chance have your injectors pop tested.
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  #14  
Old May 16th, 2014, 04:43 PM
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Quote:
Originally Posted by Uncle Douglas View Post
white smoke on startup that goes away sounds like an injector not "popping" open correctly.
When you have a chance have your injectors pop tested.
Chris thinks it may be an injector as well. We are going to discuss it further on Sunday at the LI meet up
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  #15  
Old May 16th, 2014, 07:32 PM
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Quote:
Originally Posted by IvanKV View Post
Continues after three fill ups, bad fuel unlikely



I have no idea



Yes, I replaced the fuel filter. Chris did have to bleed the system, there was air in it.
After he bleed it and I replaced the rusty-clay water that was my coolant, the engine is behaving better but when I let off the gas white smoke comes out(only for a couple of minutes after start up)
On the original 90 there was a filter for gasoline. What Mark is asking is has that filter been removed from the fuel system. IE gasoline filter's don't last for diesel applications and will screw the pooch regardless if a correct diesel filter is down line under the hood. Diesel is filtered to 3 microns. Gas not so much. A gasoline fuel filter anywhere in a diesel system will stop you dead usually @ the worst possible time, ime.
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