Hello Stephen,
Did the dealer replace the Master or the Slave ECU, also was this at a Bentley dealership, as the ECU's, the steering column, the KESSY module, and the key are all part of the Keyless Entry & Start System "KESSY", all these modules are tied together by coding and a SKC= secret key code.
Did the dealer program the ECU to your vehicle ?

EDIT: http://wiki.ross-tech.com/wiki/index...I_ECU_Swapping



Johnny

 

 

I think you forgot the rest of your reply...

Johnny

 

Okay, I see what happened, you somehow posted your reply in with the quote of me.

So you said "Hi Johnny Thanks for the reply. Yes I had a master ecu new from bentley replaced and programmed at Bentley in New jersey. They are saying the car will not crank over. Prior to bringing it to them the car was running with a misfire. Any input from you would be helpful. Or what should I look for in relation to programming ie ask for the printout from the programming? Thanks again Stephen Im located in westchester county new york."

Please have them be very clear, as so many use the term so loosely that one does not get the exact meaning of what the actual situation is, when they say " will not crank over", what exactly do they mean, to me and many others it means the starter does not engage and spin the engine, to others it means the starter is cranking over the engine, BUT the engine fails to fire up and continue to run, and as your engine was running although with a mis-fire, it was running, and therefore the starter was in working condition before the ECU swap, if is as what I think and the starter is not spinning the engine at all, maybe because of the KESSY IMMO locking out the starting of the engine, I would personally swap the original master ECU back in and see if the engine starts, I suggest you tell them to do the same, it would show if the fault is in the programming of the new ECU installation.

And yes they should give you a full scan report showing any faults, did they not give you any info as to the scan showing anything, or have they not scanned it for some reason ?

Johnny

 

 

To remove the injector plug you push the restraining clip with the arrow on it in the direction of the arrow until in clicks and locks then the plug will pull off. I will send a picture later as I have a bag full of the connectors. The clip is above the part number.


Injector plug locked

Injector plug unlocked

 

 

Has a scan been done of the vehicle since the failure on bank 2? What is the mileage of this vehicle? What was the dealerships explanation as to why the engine was determined to be defective?

Removal of all the spark plugs is highly recommended. Spark plugs that have been in the vehicle beyond their service life can create excessive impedance leading to overheating of coil packs.

Each coil pack on bank 2 has to be tested to determine if its functional. Be careful not to buy parts thinking that the next one will be the fix . Only replace parts when testing indicates failure . Look online how to use an ohmmeter to test the individual coil packs.

Start with the easy steps before heading into more complicated analysis.

 

 

Before doing anything and spending unnecessary money. Check out online Ross Tech vcds. This is a scan system that Volkswagen Audi Bentley Etc. use. May I suggest that you invest in this. You will become very familiar with the computer controlled devices on your Bentley. A diagnosis such as required to determine what is a ailing your vehicle, this scan tool is invaluable. The check engine light is insufficient to diagnose a problem such as yours.

As for water damage is anti-freeze getting into the the cylinders? One would see either extremely clean spark plugs, or the anti-freeze reservoir discolored a dark color. Another area of antifreeze damage would be the engine oil being a creamy brown color. So, unless your car was in a flood, which would create other problems what do they mean by water damage? Are your footwells wet? Under the wiper shroud are electronics there is a possibility that water got into some? What I'm getting at is the water damage is either internal engine, flood damage, or water infiltration because certain body drain holes backed up and soiled one of the ecu's. Therefore back to the Ross Tech vcds that would highlight which ECU or which system has developed a fault.

Unless someone has had this specific problem it is unluckily that you will receive an easy solution. Good mechanics develop their skills with this type of challenge. Please avoid spending unnecessary dollars as I stated earlier. A good doctor relies on their instruments first and then their brains.

 

Hello Stephen,
I believe you said earlier that the #1 ECU was corroded, as in it got wet and corroded, that's the only way that could happen, meaning it got wet, how are your cowl drains, does the fuse box to the left of the twin ECU's show any wetness, where the ECU plug ends (2 plug each ECU) cleaned of all corrosion, is the new #1 ECU still in the vehicle or did you put the original back in, what does ECU #2 and it's plugs look like?
I will see if I can find which ecu does which bank.

Johnny

 

 

Hello Steve,
It's really hard to come up with an answer for you without hands on in your situation, I know you say the ecu plugs are dry, but are they clean, if the ecu was corroded, I would expect the plug ends to be also, causing a bad connection and so on, I believe you are about 70 miles from me, also Jason is on Long Island, I have the VAS 5054, and a Ross-Tech Laptop, I will have the 15th, 16th, and 17th off finally after working 7 days a week for I don't know how long, I was going to spend those days on the A8L W12 and the B GT, But I would take the ride to check out your problem.

You can PM me or call me.

Johnny
908-507-6357