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Ontario Local discussions for those in the Ontario, Canada area.

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Old January 8th, 2010, 09:44   #1
meisterleipz
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Default Fault code 17964: charge pressure control-negative deviation

I keep getting this code.

I have replaced all the vacuum lines to the n75 as well as the the vacuum line to the actuator. Is there only one vacuum line to the turbo?

Bad actuator maybe?....car doesn't seem to going into limp mode. It is an auto.

I have also gone through Canadian Grizzley's thread.
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Old January 8th, 2010, 10:17   #2
volkswheels
 
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Are you veins seized in your turbo? does your turbo actuator hold 18mg of vacuum?
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Old January 8th, 2010, 11:00   #3
meisterleipz
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i don't know to be honest. if the veins were seized wouldn't limp mode result?
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Old January 8th, 2010, 11:51   #4
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Yes because you wouldn't be receiving enough boost , I've replaced my turbo actuator, internally fails.
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Old January 9th, 2010, 16:17   #5
meisterleipz
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car is not going into limp mode but still getting the code. what else could it be?
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Old January 9th, 2010, 19:39   #6
meisterleipz
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i was out attempting this repair: http://forums.tdiclub.com/showthread...ighlight=17964

still get the code. the "not going into limp mode" is throwing me off.

I did notice that my actuator is all rusted and when I touched it with a screw driver parts of it (the upper metal housing) fell apart but it seems to be holding pressure just fine.
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Old January 10th, 2010, 05:52   #7
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Does the actuator hold vacuum and move full travel when vacuum is applied?
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Old January 10th, 2010, 07:38   #8
Canadian_Grizzly
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I really would suspect your actuator unless it does move when vacuum is applied. It wouldn't go into limp if it is seized in low boost position. How is the power in the car has it been a dog lately?
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Old January 10th, 2010, 08:15   #9
meisterleipz
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I don't have a vacuum pump to see if it holds vacuum. Is there another way I can see if it holds a vacuum?

I can move the lever from the actuator to the turbo but there is some resistance from the actuator side I think.

when I first start the car after it sitting over night it is quite slow...I will have the pedal to the floor and it will take its sweet time getting up to speed. After it is warmed up it is better. It is also especially slow up hills...again I will have it floored and the tranny will kick down but it will slow down. It is an auto so perhaps that has to do with it.
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Old January 10th, 2010, 12:09   #10
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Check with Canadian Tire loan a tool program for a vacuum pump, hand held style, bring the vacuum down to 18mmg's and see if actuator goes full travel
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Old January 11th, 2010, 07:55   #11
meisterleipz
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alright...I will look into it.

here is a little more description of the symptoms. sunday morning I started the car and it ran fine- went up hills no problem actually better then usual. When slowed down after about 40min of cruising and sped up again the car went sluggish. I let off the accelerator and then it seemed to get its power back. No CEL came on. On the way home no power loss and no CEL. This morning...power loss and CEL came on but then power returned after I let up on the accelerator and the CEL remained on.

this was the first long drive since doing this: http://forums.tdiclub.com/showthread...ighlight=17964

seemed to help.
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Old January 12th, 2010, 21:03   #12
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to remove the actuator do you just undo the 2 10mm bolts and slide it out or do you have to remove the lever retaining clip as well?
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Old January 13th, 2010, 18:42   #13
volkswheels
 
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Both 10mm nuts and retaining clip too
Quote:
Originally Posted by meisterleipz
to remove the actuator do you just undo the 2 10mm bolts and slide it out or do you have to remove the lever retaining clip as well?
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Old January 13th, 2010, 20:55   #14
meisterleipz
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I got the actuator out. the thing is so rotten...about 1/3 of the upper housing is completely rotted away. the turbo part in which the actuator lever attaches to moves completely free- when the actuator is not attached. the actuator itself very stiff and border-line seized...i am thinking that the actuator is the cause of the fault code. Is it not suppose to move without a lot of resistance?

also, the retaining clip disintegrated when I tried to remove it...any ideas on what to do now? I thinking maybe wrap wire around the location where the clip went?
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Old January 14th, 2010, 06:26   #15
craig01b
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Replace the actuator, and the clip. My other favortie question..is your splash pan intact?

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