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Discussion Starter · #1 ·
When I start the engine in my MK1 '93, it usually starts right away, and there is no running problems, it purrs like a cat. But about every third time I start the engine, it won't start, I can crank and crank, but there is absolutely no sign of life. The solution is to turn the key, and shut down the ignition, and then turn it on again, and crank the engine. Then it usually starts right away. This is no big problem for me, it's just a bit annoying. I can really not understand why this is. My only thought was that the fuel pressure was low sometimes, and when I turn the ignition off and on again, the fuel pump builds up more pressure. But this is not the case, since i've measured the pressure in all kinds of situations, and it's always fine. Anyone got an idea what it can be? Is it som software fault in the ECU, wich is corrected when I "restart" the ignition? Ideas?
 

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Still waiting to Wii
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2,710 Posts
dunno, it could be a simple software issue, we get it on our DAFs sometimes, if we turn the key just right you will get a configuration error and it will block injection.
 

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Still waiting to Wii
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2,710 Posts
TBH, I don't understand why exactly it does it, I do believe it has communication issues between teh various computers, and configuration error will show up on the screen (DAFs have an LCD Communication screen). cycle the key, and all is well.
 

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MEG Corporal
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801 Posts
software? don't think so after years of testing/driving, unless mechanical or electrical fault in the ecu.
I would rather think of any electrical fault somewhere else which occures under certain conditions .
 
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