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Audi Q7 2007 diesel injectors didn't get signal pulse and no fault codes
11-08-2022, 10:27 AM,
Post: #11
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RE: Audi Q7 2007 diesel injectors didn't get signal pulse and no fault codes
(10-08-2022, 12:25 PM)lsalt100 Wrote: Sometimes it should be faulty crank speed/position sensor.... i read engine speed while cranking it is 160 ~ 200 i think it's ok for starting the car other way i try to start the engine with spray and engine run so that mean mechanicals is fine like timing and pistons |
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15-08-2022, 06:48 AM,
Post: #12
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RE: Audi Q7 2007 diesel injectors didn't get signal pulse and no fault codes
so in my case (no ramp pressure - reworked HP pump an driven cca 1000km, then no pressure hot and cold engine) helps HP pump exchange.
1. in measuring block U can see MB005-3 if all sensors are synchronised(crank and camshaft) 2. there are also start IQ in mg - if 0mg means no power to injectors MB005-2 3. before I ask about ecu, cause in this edc16 if is little problem with checksums engine is able to run 1hour-24hour or may be 3-6succesfull starts and then without any fault in ecu, engine stops to work...
LSalt100 |
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