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Odd starting problem; Problem starting when engine is warm
Topic Started: Jul 26 2011, 08:17 PM (2,232 Views)
tom35s12
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I Have a 2003 35 S 12 Daily. It is generally well kept and recently serviced. Recently it has developed a problem staring when the engine is warm, but it is fine when cold. It will start eventually but the rev counter doesn't work and the injector warning light is flashing. Once started the engine runs fine and seemingly normally (with no rev count and flashing injector light). I suspect that the management system is getting a dodgy input from a temp sensor. I have looked at a number of posts re starting probs but not found anything like this. If anyone out there has any info regarding this I would be very grateful indeed.
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eurozulu
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I have been informed that crankshaft sensor can cause this,i was told will give problem with rev counter . i think they breakdown when they get hot and as they cool will work again. and there not expensive £40.
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tom35s12
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Thank you for this, I will investigate. I wonder if the injector system takes its timing from the same sensor, perhaps that would then explain the injector fault warning. Onward. Thanks again.
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Bazil-S
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Hi,

Hi,

No, the system uses the camshaft sensor for timing, but if the camshaft sensor breaks down, then the EDC will use the crankshaft sensor for engine speed and the engine timing at the same time.
Disconnect the crankshaft sensor when the engine does not start ( warm engine), try to start the engine, if it starts (harder start then usual) then the sensor is defective.









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tom35s12
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Well guys, thank you, the problem is fixed. £35 for the sensor and thanks to the fact that its an F1A engine it was easy to get at. What a great tech forum this is, I shall get my slightly thinner wallet out.
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