The User DOES have to understand HOW to connect to the DME, and also to the EKPS Fuel Pump Module, and WHAT Screens to select, but if he knows THAT MUCH, he can see the Live Data, and doesn't have to GUE$$ and throw part$ at your expen$e.Įven if YOU don't have the Laptop with software installed to DIY, you at least need to be aware of GENERALLY what diagnostic tools are available, what their capability is, and how to find a shop that has those tools and knows how to use them. Just plug the K+DCAN Cable into the OBD II Socket and watch the show. You don't have to disassemble or disconnect ANYTHING. That Data includes ALL the DATA from the Crankshaft Sensor, Cam Position Sensors, VANOS Solenoids, DME Main Relay, MAF Sensor, Rough running (to determine if several cylinders as opposed to all cylinders alike are affected), Fuel Pump Temp, Voltage & RPM, and DME Signal to Fuel Pump Module, and MORE. What you need to understand is that INPA or ISTA Diagnostic Software (free downloads available) can allow you/ your Tech (someone who actually understands how BOTH the Engine DME and Diagnostic Software work -) to observe LIVE DATA with engine running. If the engine is stalling after 20 minutes of PROPER operation, that means it is ceasing to get (1) fuel delivery to rail at proper volume/pressure (2) Injector pulse to supply fuel to the cylinders (3) Properly-timed spark at plugs and/or (4) DME Power supply or function to pulse coils and injectors. Your intuition that there is an intermittent electrical fault, or perhaps temperature-related electrical fault, such as fuel pump NOT working properly after 20 minutes of function, is almost certainly correct. Ive been just throwing money at this vehicle and would just like to know if there is a known electrical fault somewhere in the harness maybe? i dont know any help would be very appreciated.Ĭar is throwing NO Codes at all, and you've replaced ALL THAT? You should have "kicked out" your two "mechanics" instead of "other way around".Īre you aware that INPA or ISTA will allow you to monitor LIVE DATA of Signals from various components, such as Fuel Pump, VANOS Solenoids and Cam Position Sensors, DME Main Relay, Crankshaft Sensor RPM Signal, MAF air flow rate signal, etc.? Using that software, you can see what changes when the hesitation or stalling occurs.ĭid either shop use any such Diagnostic Software (view data on Laptop screen) or a Scan Tool that can similarly monitor Live Data? Did they monitor Fuel Pump operation? Did they try to Activate the Fuel Pump when the engine began to falter or stall, or read Pump voltage or RPM? Other than that nothing has ever been mechanically wrong with the car. i have to leave it overnight and it will start back up again no problem the next morning.īefore all this started happening i had some oil mixing with the coolant but was quickly repaired (oil housing gasket) it will start back up again and again until some point where it no longer will. The problem is definitely electrical as it competely loses all power entirely then all of a sudden is fine again for a few seconds. (im told something about open and closed loop circuit) 2 mechanics have kicked it out now not being able to figure it out. The car runs and idles fine for about 20 min then very rough idle and complete stalling sputtering starts. Hoping i can get some advice on an ongoing issue im having with my 2006 325i E90 Sedan.
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