My 2004 VW Passat 1.8 turbo has had quite a few problems. In February my car started flashing OIL PRESSURE TURN MOTOR OFF whenever I'd hit 2000 RPM. SO I got my oil changed and my pressure checked and it said my pressure was at 60 which is where it should be. Then I replaced the oil sensor thinking it was that problem but it continued to flash the oil pressure. About a couple days after that I couldn't get my car to start and my check engine light was now on as well. I hooked up a code reader and it spit out two codes one was the crank shaft sensor the other one was cam shaft sensor. I had it towed to a mechanic and they changed the crank shaft sensor and it still wouldn't start they found out it was my fuel pump so I got a new fuel pump put in it started and ran great for a week. Then a week later my car wouldn't start again a couple hours later go it to start drove it back to the mechanic because it was saying the oil pressure again. He put in the cam shaft sensor I haven't had a problem with it starting back up since but it has still flashed the oil pressure turn off motor light alarm since and last night the check engine light came back on hooked up the code reader again and it's saying it's still the cam shaft sensor. It started making some weird noises as well just recently like a clicking noise when it's idling and a kind of grinding noise when I first start to accelerate from being completely stopped. Does anybody have any ideas of what this could be?

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:)

SOURCE: 2000 VW Jetta VR6 My

You may have a bad coil pack - try moving two of them around and see if the misfire follows the coil pack or stays at the same cylinder. If it follows the coil pack, get a new one. If it stays in the same cylinder, inspect your spark plug wires and make sure the plug is gapped correctly.

Marvin

• 85242 Answers
• Posted on Dec 01, 2008

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

SOURCE: have this code PO171, what does this mean.

Not sure that the O2 sensor was bad. It sounds like it was telling you that side of the exhaust system was picking up a lean mixure at the O2 sensor. The O2 sensor was doing its job by telling you the mixture changed. If the O2 sensor was bad, it would say low voltage range for that sensor, or open curcuit.
Now the car has had time to do its diagnostic sweep, it is telling you the same thing, but from a different sensor...the fuel mix is too lean. Air/spark/and fuel is what you need in the correct amounts. In your car, the ECM engine control module controls this by taking readings from all the sensors several hundred times a second.
Mechanically, you have a few options. Change the fuel filter...under the car on the passenger side. It is an easy job.
Change the fuel pressure regulator. This keeps the fuel at 4 BAR so the fuel injectors can do their job correctly. This job just needs a screw driver to pop off the clip that holds it in place. No hoses need to be removed. It is on top of the intake manifold, in-line with a metal fuel line and a rubber one.
The fuel injectors could be clogged up on one side of the engine. Run some fuel injector cleaner through a tank of gas. Also, listen for a constant ticking sound at each injector. If one sounds off PAR, then replace it.
The fuel pump may not be giving you enough power. However, the readings seem to be localized to one side, so I doubt it.
Start with the easiest thing, and see if it works. Also, you will need to get yourself a VAG scan tool. It is the only one with codes in it for all of your VW systems, not just engine codes like the ODB scanners. You can get a nice one for $50 on-line.
Good Luck!

SOURCE: VW Passat TDI turns but won't start.

99 vw passat 1.9tdi was driving sound but just died just turns but wont fire up