Skip the auto shop - Our mechanics make house calls

Q: VW passat 2006 running car stopped all on a sudden. Battery full power, fuel > half tank, Fuel pump ok,mass flow no blocks

asked by on

Running car stopped all on a sudden. Battery full power, fuel > half tank, Fuel pump ok,mass flow no blocks. What could be the problem?

My car has 110000 miles.
My car has an automatic transmission.

The place to begin when a car won’t start is to figure out what is missing. An internal combustion motor needs fuel, proper fuel pressure, spark, correct cam timing and compression to run.

Here are some items you will need:

You will need to check for the presence of all of these using the tools I have linked to above. There are a variety of different scenarios that can play out here. If you don’t have spark or injector pulse as indicated with a noid light, you should suspect a crank or cam sensor. Anything that allows the ECM to supply both spark and fuel is suspect.

You will need to find your fuel pressure specification in a shop manual to confirm it is operation properly. A fuel pump can fail due to power supply failure or the pump can fail itself. Banging on the bottom of the fuel tank while someone cranks the car is a valid test that makes fuel pump diagnosis easy.

Check compression in every cylinder. If some are significantly lower compression than the others, suspect a problem with camshaft timing. Follow that up with a timing belt inspection if the compression is off in some cylinders.

Once you find what is missing, you will need to follow that info up with some study to figure out what affects the failed system.

If you feel like you need some assistance with these checks and repairs, enlist a qualified mechanic who has the tools and experience to properly diagnose the cause of your stall.

Good luck.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. VW passat 2006 running car stopped all on a sudden. Battery full power, fuel > half tank, Fuel pump ok,mass flow no blocks

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: My car starts, I can reverse but as soon as I put it in drive it shuts off

Hello. You may have a sticking torque converter lockup clutch, or sticky solenoid for this hydraulic actuator. This would account for the "idles in Reverse, but not in Drive". A locked up converter doesn't allow the engine to idle without...

Q: when in Driver shift control, how do you know when to shift up or down (at what speed or engine RPM)?

Shift points depend somewhat on the load on the engine and whether you are going uphill or downhill. Generally, though, you can shift at around 2,000 RPM. The recommended shift points are documented in the printed Owner's Manual for the...

Q: check engine light and car shuddering

Hi there: After looking into the first error code you posted, the vibration and shaking issues on your VW are most likely caused by a vacuum leak. The P2279 OBD-II code indicates that the ECU has detected a vacuum leak...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...