Good info there, useful for people with newer TDIs in NA.
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Originally Posted by Piwoslaw
So, all of this information, and what to do with it? I have a few ideas on how to kill the engine, but I'm not sure whether they would harm the engine, harm the ECU, or at least make it throw a code and go into limp mode until I pay $$$ at a service station to turn it off. How about : - Kill the lower pressure fuel pump and see what happens
- Hack the fuel pressure sensor to tell the ECU the pressure is too low/high
- Trick the ECU into thinking the engine speed is such that the fuel should be cut to the injectors
- Cut sygnal to one of the injectors and see if the ECU sends an emergency shut down (rebuild engine if not)
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I'd try 1 and 4 at idle to see what happens. 2 might get the ECU to tell the pump to adjust pressure and bad things could happen if there's not a second feedback loop.
Quote:
Originally Posted by Piwoslaw
Older diesels had a pump for each injector, while in commonrail technology there is one pump responsible for creating very high fuel pressure in a reservoir used by all four injectors.
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Even older diesels, 1997-2003 TDIs in NA, had a single rotary pump, in which case you can just short the wires going to the fuel quantity adjuster to have the ECU shut the pump off.