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An all-new Passat, based on the Volkswagen Group B5 platform, was launched in 1998 in North America.

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My 2001 VW Passat has an intermittent starting problem; any suggestion

I have replaced the coolant temperature sensor, mass air flow sensor and the mass air flow sensor wire housing and still have this problem. Any suggestions? Thanks!

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Take it to an AutoZone and get a free diagnostic computer read out so you know what to replace.

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I didn't know that AutoZone did free diagnostic reads so thank you!

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First step is always to check the computer memory for any stored diagnostic trouble codes.

What conditions make a difference in this problem? Cold/warm? First time starting the engine or hot restarting? Damp or wet weather?

BILL

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Bill - Thanks for your comments. We ended up replacing the camshaft something (this is my son's car) and now it seems to be much better. FYI - Conditions didn't matter and it was both a hot and cold engine when it happened.

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Toni - Probably the Camshaft Position Sensor. It signals the Engine Control Module the position of the camshaft so that the ignition system can fire the spark plugs at the correct time. Glad it worked out!

BILL

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Toni will be eternally grateful.
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