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medic
01-23-2011, 02:44 AM
Our Mini has been in and out of the shop since the summer with the same issue.

Stalling, sputtering, no power, engine light etc...

It was taken to Mini where 3 times the fuel injectors were cleaned and the vehicle released. On the fouth occurence, Mini finally replaced the fuel pump.

Problem is, this evening, the problem has returned. The Mini only get fueled with 91+ octane, and is well taken care of.

We no longer feel safe driving the Mini as one of the failures occured on the highway! The car is just over a year old.

I wish Mini could identify the problem and fix it. If this is going to be an ongoing thing, we will have no other choice than to get rid of the Mini.

Help...

Ronster
01-23-2011, 06:41 AM
High Pressure Fuel Pump?!

Xiek
01-23-2011, 02:01 PM
what are the engine code #\'s being reported?

Xiek
01-23-2011, 02:07 PM
Customer Concern: Engine stumbles when cold and has poor response off idle.

Tests/Procedures:
1. This vehicle uses a high pressure fuel system that requires readings from the fuel pressure sensor with a scan tool.

2. Look at the data for the pressure sensor and there should be about 725 PSI at idle up to a maximum of 1750 PSI at full load.

3. Verify proper supply to the high pressure pump. The in-tank fuel pump should run at a constant 45 PSI.

Potential Causes:
Defective Fuel Pump If the in-tank pump is not supplying enough fuel to the high pressure pump, the system will not work right.
Defective High Pressure Fuel Pump Assembly
Leaking Intake Air

Diagnostic Codes: 10368, 2880, P2177, P3091
Author: Robert Jacobs
Average Reported Mileage: 47000


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Customer Concern: Vehicle seems to have low power and customer heard a \"pop\" sound just before power loss.

Tests/Procedures:
1. This engine is turbocharged and has a means of dumping all boost around the turbocharger by a blow-off valve. The blow-off valve is on the intake side of the turbo charger.

2. Verify that there are no intake system leaks by filling the system with smoke and then pressurize the system. Any leaks will need to be fixed before further diagnosis can be done.

3. There are 2 pressure sensors, one before the throttle plate and one after the throttle plate. Make sure neither of them are fluctuating erratically. A pressure reading that does not make sense could cause the engine control module to dump turbo boost.

4. Boost pressure is controlled by a wastegate. The wastegate is vacuum controlled by an electro pneumatic pressure converter. It provides the vacuum to the wastegate actuator. Try using a hand vacuum pump and see if vacuum applied to the actuator will move the actuating rod. Make sure the actuating rod does not stick. If stuck, it may be bypassing exhaust gases around the turbo charger preventing turbocharger operation.

Potential Causes: Defective Blow Off Valve (BOV)
Defective Boost Pressure Sensor
Defective Digital Engine Electronics Control Module (DME) Fault codes indicate an internal failure of the control module.
Leaking Intake System
Defective Manifold Absolute Pressure (MAP) Sensor

Diagnostic Codes: 2777, 277F
Author: Robert Jacobs
Average Reported Mileage: 29000

medic
01-23-2011, 02:59 PM
thanks for the write up guys. Much appreciated.

the Mini will be going to MVW tomorrow for a check-up. Hopefully it\'s nothing big!

R53Tuning
01-24-2011, 08:21 PM
What was the outcome of this matter?

medic
01-25-2011, 12:57 PM
frozen fuel valve....

The vehicle stored the code and MVW was therefore able to replace the part under warranty.

A HUGE thanks to John at MVW for being such a big help. Very knowledgeable and was even able to get the Mini done without an appointment.

:)

Xiek
01-25-2011, 04:39 PM
medic wrote:

frozen fuel valve....

The vehicle stored the code and MVW was therefore able to replace the part under warranty.

A HUGE thanks to John at MVW for being such a big help. Very knowledgeable and was even able to get the Mini done without an appointment.

:)

congrats!

Xiek
01-25-2011, 04:39 PM
medic wrote:

frozen fuel valve....

The vehicle stored the code and MVW was therefore able to replace the part under warranty.

A HUGE thanks to John at MVW for being such a big help. Very knowledgeable and was even able to get the Mini done without an appointment.

:)

congrats!