Question about 2003 Volkswagen Jetta TDI
My 2003 Jetta will not start if it is -25 C. and below. If it warms up to above -25C, it starts. Have been to shops/Volkswagen dealship and they cannot troubleshoot it. Sure would like some help on this one. We have been told it is the battery (new battery and it still has problem), and it possibly be the starter, but no one is for sure.
Same problem with my 03 jetta. My buddy who is a car guy installed a push button start. I don't know anything about cars but this worked great and has started with no problems, he basically ran a wire from the push button, to the battery and it works great. If you still have problems, I will ask him specifics.
Posted on May 06, 2009
Change the engine coolant temperature sensor. This is a guess, but I've seen several bad ones. There is a situation where the range of the sensor just doesn't go low enough. The computer may be getting a reading from the sensor that indicates the temperature is -10 instead of -25 and the fuel enrichment at start up just isn't aggressive enough to support combustion at that low temp. Failing this, you are really going to have to check if it has spark when it is not starting. Then you can determine if you are chasing a fuel or ignition problem.
Get a spare spark plug and plug it into one of the spark plug leads, hold the threaded portion of the plug against a metal part of the engine while someone cranks it over and watch the electrode. Your results here will give you a much clearer direction to take.
Posted on Mar 12, 2009
If you've ever been to Canada, you may heve noticed there are electrical outlets in most of the parking spaces. Especially when you head further north.Almost everyone has a block heater. That is your solution. Even gasoline is supplied in more volatile form in the winter because it is difficult to ignite. Same with other fuels. Alt fuel cars and deisels are especially prone. If you put a block heater on, you are helping the physical properties of the fuel to compress and ignite.
Posted on Mar 12, 2009
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Posted on Jan 02, 2017
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