Question about 2004 Volkswagen Passat

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I have 2004 passat 1.8 check engine was on low boost pressure dealer said it needed a turbo, I replaced the turbo same problem po 299 with low power. looking for help some place in central ca. to take it to for honost repair

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  • kimou1dz May 11, 2010

    I advice you to clean or change the overrun cut off valve, the vw dealers call it cut off valve, and vacume your air box, then insert fuel injector cleaner, then clean the air mass flow sensor it is located behind the throttle body then clean the throttle body, and see what kind of results you will get!! I have done so, and now my car by the will of Allah, is so beautifully driving! like a plane in speed, power, ignition, and much more, the acceleration became just little bit make it run for long and fast, praise God who guided me to that, it became really great. fuel injector put one bottle every time you empty your tank then fill it up on top with 91octan or 95, but not 94 or something else, see it in the fuel tank cup, so you don't harm your catalyst, and wait for the result after several times(five times or more) Good luck from Muhammad Islam.

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  • 2 Answers

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Posted on Jan 02, 2017

j_del
  • 1586 Answers

SOURCE: DAUGHTER'S 2002 PASSAT TURBO

If the turbo is truly failing, then it could put metal pieces through the engine if it broke apart. Usually when a turbo fails, it's the bearings wearing out, and the turbo starts making a "dentist's drill" sound when the car accelerates. $1500 sounds pretty steep but if it's at a dealership, I can see where it would cost that much. A better bet is an independent European car specialist - usually they'll cost significantly less. Also, you can source a turbo on your own (you'd be looking for a K03s turbo) and give it to the mechanic to install, to save even more.

If you're in New York State, I could do the job in my garage for you. I can source the turbo and do the work here.

Posted on Aug 12, 2008

  • 345 Answers

SOURCE: tdi loss of power

does it go ok if you turn the key off and try it again ?

Posted on Nov 21, 2008

emissionwiz
  • 75817 Answers

SOURCE: Engine warning light and engine vibration 2002 VW Passat

The flashing is telling you that the engine is mis-firing, the dealer will run a test to determine the cylinder that is mis-firing, chances are it is something simple

Posted on Dec 01, 2008

localwonder
  • 6784 Answers

SOURCE: Oil Indicator light on Volkswagen Passat 1.8L Turbo

Hi. there are many issues that can cause this type of situation. the oil pressure sending unit may be malfunctioning. there could be a faulty module or the wires and connectors could also be lose or faulty as well. you could also have a clogged oil filter but, that usually isn't the main issue here. the most common problem here would be a bad oil screen in the pan or a faulty oil pump. you will find the problem in these areas above.

Please rate and god bless:)

Posted on Apr 02, 2009

  • 10 Answers

SOURCE: Need to replace Driver side Headlight on 2004 VW

If the light casing needs replasing then im pretty sure you have to remove the upper bumper, but if its the bulb thats blown the you should be able to do it from the engine bay. I hope this information helps im sorry i couldnt help more but im not a vw specialist.

Posted on Apr 16, 2009

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1 Answer

Fault codes P0236 and P0046 keep coming up on my freelander1 td4 2004


P0236 = Possible causes are

1. Boost pressure sensor harness is open or shorted
2. Boost pressure sensor circuit poor electrical connection
3. Faulty boost pressure sensor
4. Faulty Turbo/Super Charger
5. Engine over temperature
6. Ignition misfire exceeds the threshold
7. Faulty Knock sensor (KS)

P0046 = Turbo/Super Charger Boost Control Solenoid Circuit Range/Performance

.... based on this information I would replace the turbo boost control solenoid first.

May 02, 2017 | Land Rover Freelander Cars & Trucks

1 Answer

Twice in the last 2 weeks the turbo on my 2.0 TDI Audi has shut down while driving. To reset it I have to stop, switch the engine off and then back on again. I took it to the dealer who tells me I need a...


In the most cases for Audi 2.0 TDI the turbocharger is responsible for engine losing power.
The car goes in "limp home" mode!!!
After scan the EDC-15P engine control unit with a VAG or KTS -BOSCH diagnosis tool you will find this: Fault code: P1557-Turbo Boost pressure control exceeded
1. Engine stopped and ignition switch off. Check all pneumatic connections and hoses between turbocharger actuator = pressure unit for boost-pressure control, boost-pressure control solenoid valve, vacuum reservoir, EGR control solenoid valve, intake-manifold flap solenoid valve, EGR valve with throttle - part of intake manifold. Also the vacuum connection between tandem pump and brake booster. If you find something wrong replace parts. If not go to step 2.
2. Extract the hose of the turbocharger actuator = pressure unit for boost-pressure control part of turbocharger. Instead of the original hose you must place another 1 meter long hose with the same inside diameter, and then you check to inspire yourself the air from the other one extremity of this hose. The mechanical connecting rod of the turbocharger actuator must have a smooth and whole motion. If you can do that with your mouth, then you must replace the boost-pressure control solenoid valve. If you can not reach this with your mouth, then you go to step 3.
3. This is the most difficult work. The problem is that the soot particles deposits inside the turbocharger plugging the variable nozzle geometry mechanism = adjustable vanes of the turbine. If the turbocharger actuator is not able to adjust the turbine vanes the charge air pressure increase too much and ECU (engine control unit) go in "limp mode" = engine protection software. As a result the "limp home" mode engine still running until you turn the engine off (ignition switch off) and back on when the "limp mode" is deactivated, but the fault still remain in ECU memory!
4. You must be able to extract the turbo from the engine and then to disassemble the turbocharger, clean inside adjustable vanes mechanism and refit all.

Jan 06, 2011 | 2005 Audi A3

2 Answers

I HAVE A 2007 DODGE SPRINTER WITH CODE PO299 WHAT TEST CAN I DO


Check all hoses to and from turbo to intake .. it is most likely a leak somewhere and the pcm is reading it as a underboost code.

Jul 28, 2010 | 2004 Dodge Sprinter

1 Answer

Getting code 16683 on volkswagen passat and having trouble with turbo engaging after replacement of engine.


16683 - Boost Pressure Regulation: Control Range Not Reached may be intermittent or constant does not throw CEL if you've gotten it

This sounds like it's related to your turbo. Maybe something was damaged in the process of transferring parts over to the new engine?

Maybe a gasket, or seal or something?

Jul 10, 2010 | 2003 Volkswagen Passat

1 Answer

Code PO 299


If you are sure that is the right DTC, P0299 is not a generic OBD-II DTC (Data Trouble Code), and it is a manufacturer specific trouble code that is for an under-boost problem, and it would most likely be related to a problem with a turbo-charger.

Jun 05, 2010 | 2004 Dodge Sprinter

1 Answer

Turbo problem...dealer replaced valve...still


If you have a problem that isn't caused by something obvious, you need a Ross tech VCDS cable. This is a laptop computer diagnostic cable to talk to the car's computer. Without it you cannot do the more advanced tests.
Note about generations - some generations have similar engines: Mk3= 1996-1997 3rd generation Passat TDI or 1996-1999 3rd gen Jetta TDI Mk4= 1998-2006 New Beetle, 1999-2005 Jetta, 1999-2006 Golf, 2004-2005 Passat TDI Mk5= 2005.5-2010 Jetta TDI Mk6= 2010+ Golf TDI
Remember, an engine needs fuel, air, and compression to run. Low power is related to a lack of one of these or a sensor problem making the computer thinking there's a lack of these. Any sensor problem could also be caused by a bad ground or broken/chaffed wire so also check every section of the wiring of the suspect sensor for breaks.
Bad MAF sensor - very likely cause on the mk4 TDI. Not common on the mk3 TDI (1996-1999 Jetta/Passat). Early mk4 MAFs failed often.Error codes normally do not show up with a faulty MAF since the signal degrades instead of going out completely. Through VCDS, checking MAF actual vs. specified at idle, high rpm, and high load will quickly show a bad MAF or other problem causing a low MAF reading.
Clogged intake manifold - carbon buildup chokes the intake manifold, starving the engine of air. Only ultra low sulfur diesel is sold in North America now so there should be much less buildup in the future. Always use good quality synthetic engine oil on your TDI..
Anti shudder valve shut or almost shut (does not apply to mk3 TDI, more for mk4 TDI) - there is a spring loaded valve right before the intake manifold. Newer TDI use an electronic valve and are not as susceptible to sticking. If there is excess carbon buildup, it could shut in a partially closed position.
Clogged snowscreen/air filter - a clogged air filter will starve the engine of air. A clogged snowscreen (large debris air pre-filter) shouldn't block off all air unless the aux-intake flap is also clogged.
Clogged fuel filter - change interval is 20,000 miles but biodiesel use (cleans out old buildup) or bad fuel could clog it early, resulting in fuel starvation. Algae or bacterial growth in the fuel tank could also clog the lines.
Boost leak - a cracked hose or loose connector lets measured air out. No air or major leaks = poor engine running or stuttering. A visual inspection may not reveal all the possible or hard to see spots where leaks can form.
Hose inside ECU (mk3 TDI only, does not apply to mk4 or newer TDI) - this hose leaks and normally sets a check engine light,
Vacuum lines to/from turbo and n75 solenoid - these dry out over time and crack or can rub through. It's possible they are clogged. The n75 solenoid controls the turbo wastegate or VNT vanes with either vacuum or pressure. b4 Passat - on firewall above coolant reservoir, a3 Jetta - on pass side near air box, a4 Jetta/Golf - on firewall above brake fluid reservoir.
Problem with the n75 solenoid, VNT actuator, VNT vanes, or vacuum lines. You should have already checked the vacuum lines, the below test will inspect the entire system. Start the engine and through VCDS, click on "engine"-->"measuring blocks"-->hit "up" until you reach "group 11". Compare Specified vs. Actual MAP. This compares what's actually happening and being observed from the boost sensor (barring a faulty sensor/plug/wire) to boost the computer is requesting (what should be happening). They should be relatively close. If they are far off this normally results in limp mode but it could also be contributing to the problem. If you have a mk3 you have a conventional turbo but you can still use this test to check the n75 solenoid, the wastegate, and vac lines. However, wastegates are much less susceptible to sticking vs. VNT vanes. The videos below show how it works. The lever on the outside is welded to a lever inside the turbo housing. This is how it moves the VNT vanes. See the below videos to see how smoothly and free the lever should move. It should not stick or bind at all. Vacuum is being applied to the can, not pressure.
If the test shows poor response or no response at all, it could be sticky VNT vanes/actuator (mk4 and newer TDI only), The vanes or actuator can stick or fail to function, the lever should move freely.
If the actuator is fine, also check the n75 solenoid and vac lines. The n75 solenoid controls vacuum or boost to the vacuum line going to the turbo wastegate/VNT actuator. To test, apply voltage to the solenoid or swap with a known good unit. If you have a mk4 TDI, you can swap it with the EGR solenoid to test. Also check the plug for corrosion and the wiring harness for chaffing. If those are good, disconnect the VNT actuator rod and move the vanes by hand. If the vanes are stuck then remove the turbo and clean the inside of the exhaust housing to free the stuck vanes.
Faulty injection pump's fuel injection quantity adjuster - these are occasionally set wrong from the factory or after seal replacement. It's also possible the fuel pump's internal quantity adjuster is faulty. Applies to 1996-2003 TDI only or TDI that use a Bosch VE injection pump (not pumpe duse or common rail). Injection quantity should be 3-5 at idle and up to 36-38 at full throttle.




Feb 01, 2010 | 2004 Volkswagen Jetta

1 Answer

My 2004 passat TDI is giving me an exhaust leak sound noise.


This vehicle certainly does have a waste gate and they do have problems. However the waste gate diverts exhaust internally so you would not hear any unusual noise if it was being problematical. Also if the expected boost from the turbo did not match the actual boost there would be a check engine code and light on. If the hoses between the Turbo & the intake have a leak there may be a similar loss in power depending on the extent of the leak. It would be best to scan the engine computer to see if there are any Codes.

Dec 31, 2009 | 2004 Volkswagen Passat

1 Answer

Hi folks i have got passat 130pd tdi ,it seems


have you checked your air intake system? A clogged air filter will severly limit the amount of air that it can get, or a leak in the exhaust driving the turbo will limit the amount of pressure to spin it. Start by putting a new filter on it. Then if that makes no difference, you can check the waste system by installing a boost gauge, so as to check how much pressure you're actually getting to the manifold. If boost is normal, then you need to look for fuel system or mechanical factors.

Nov 19, 2009 | 2001 Volkswagen Passat

1 Answer

Intermittent boost pressure


a bad pop off valve.  Or boost controller.  Sadly with 100K on the speedo things are far from mint.

Mar 25, 2009 | 2002 Volkswagen Passat

1 Answer

Loss of power going up grade


sounds like a very common problem on turbo vag vehicles,the variable vains are sticking in the turbo,your fault code would have said....turbo boost pressure not reached.....common with v v t turbos,run a good quality fuel cleaner through it ,if that doesnt work then a new turbo is the only cure

Dec 29, 2008 | 2004 Audi A4

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