MKIV VW GTI FUEL PROBLEM

Hi,

I hope I can help with this. This could mean the engine spark plugs or plug is the issue. Also check the exhaust pipe. White smoke indicates a coolant issue. Check your coolant reservoir. Black smoke indicates a Fuel issue. Blue is an oil issue. Also, speaking of your spark plugs there very well could be a misfire.

the code P303 could be cylinder 3 misfire
P102 the mass air flow sensor which is on the air filter cover. It's an electrical part and is sensor. Please check these and let me know.

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Jasmina, for VW code P0106 is the Manifold Absolute Pressurer Sensor(MAP) sensor and can cause the issues you described.
i will post links for you to check out and compare.
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P0106 MAP Barometric Pressure Circuit Range Performance Problem

https://www.google.ca/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&cad=rja&uact=8&ved=0ahUKEwjN86bvx_rKAhULuIMKHWtYDpsQFgghMAE&url=http%3A%2F%2Fforums.vwvortex.com%2Fshowthread.php%3F5437331-Persistent-P0106-looking-for-some-diagnostic-help&usg=AFQjCNFw95Y4fLI5tjisHCbOIeLjfDMnag

check engine code P0106 VW Jetta SE 2 5L engine should this be dealer cost

P0106 Code VW GTI MKVI Forum VW Golf Forum VW Golf MKVI Forum VW GTI Forum...

Engine compression .

If I were doing this on my own car, I would start with the cam and crank position sensors...if one of them is failing it will cause all kinds of mayhem in the engine... they need to be in sync to tell the engine where the crank is relative to the cams...for timing purposes. If the ECU can't tell where one of them is at a given moment, it may cause that "misfire" issue, but again, this is a starting point...Then there's the Throttle position sensor, the MAF sensor, the MAP sensor...the list just goes on...could be the fuel pump, the fuel pressure regulator, injectors...etc. However, has the car been throwing any "codes" at you? if so, list them here.

What faults codes are showing on a test of the electronic engine control module?

MAF or MAP sensors may cause such problems. they measure air on intake. if they are wrong on measuring car cant decide on fuel mixture.

in addition to that crank position sensors can be another cause for such ignition related problems. engine management can decide on exact timing of ignition happens in each cylinder.

1st have you replaced the O2 sensor? Here is the technical stuff about this fault code
OBD 2 fault code P0171 VOLKSWAGEN - Fuel control System To lean engine cylinder bank number #1.
Possible causes:
Possible causes- Intake air leaks, spray propane around the intake manifold gasket and all vacuum connections and listen for a change in the engine idle speeds, any change indicates a leak.
- Faulty front heated oxygen sensor (a common cause if the car has over 50,000 miles on it)
- Ignition misfiring
- Faulty fuel injectors
- Exhaust gas leaks
- Incorrect fuel pressure Hook up a fuel gauge and make sure the fuel pressure is good/in specs under a load.
- Faulty Mass Air Flow (MAF) sensor
- Incorrect Positive Crankcase Ventilation (PCV) hose connection

Those codes mean there's an issue with your MAF, Throttle Body Sensor, Fuel System, Engine Misfires



Start with the MAF first as that can cause the other issues to appear (ex. fuel issue because your MAF says it needs more fuel so your engine is getting flooded and stalling.

Then look at the Throttle body and have the replaced if the issue still occurs... Then look at the fuel injectors and fuel delivery system (lines, gas tank, gas pump, etc)

Your engine misfires seem to be the result of any of the previous....

vw2000 (2.0)
Blinking engine lt. Poor performance-barely make it up a hill.
Mechanic said bad O2 sensor--Replaced--had same problem-
Used "ADVANCED AUTO" Diagnostic meter---FREE FREE FREE
Code read MISFIRE
Replaced COIL pack!!!!!!!!!
Returned to Advance auto to clear codes---
NO CHECK engine light --runs like new
Believe the COIL pack went bad causing the sensor to clog and go bad--Probably could have just cleaned it.
Cost $200 parts and free labor>LOTS of bad words,gerasy hands and good running car
HOPE THIS HELPS SOMEONE