Question about Volkswagen Cars & Trucks
Check for spark and fuel.if vechicle don't crank.could have faulty ignition system.or fault in fuel system.
Posted on Mar 21, 2019
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Posted on Jan 02, 2017
Check the crank and cam position sensors...sometimes they don't kick the SES light on until they fail. one of the main symptoms of the cam position sensor failing is the "no start, but cranks fine" issue. This happens especially when the engine has been driven and is warm. If the sensor has failed, the engine won't start at all, and everything else will seem fine..the part is usually cheap at the store, and usually easy to replace since it will be near the top of the engine somewhere. I'd start with that and see how it goes...The other sensor I mentioned is also critical in the timing of the engine the "crank sensor" if it fails, it may also cause that situation. The two sensors together tell the CPU where the cam and crank are in their timing sequences. If one isn't working, the CPU won't know where to fire what cylinder, so it just won't fire any of them. ie: No Start. I would replace them both just to be sure. Since you have checked everything else, and it cranks, I can't think of anything else at this point. Good luck. :)
Posted on Jun 09, 2012
Could also be a problem with the wiring between the sensor and the computer.
Posted on Dec 04, 2012
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The engine and transmission in this cars drivetrain is fully electronically controlled by a computer called the PCM (Powertrain Control Module). Whenever a problem like this occurs the computer stores a record of the problem in the form of a fault code in its memory, to read these fault codes you must have the systems memory scanned with a special tool. Once the fault code(s) are read you then must perform the appropriate diagnostic testing to find and resolve the problem(s)
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