Question about 2002 Volkswagen Jetta TDI
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Posted on Jan 02, 2017
this is a common problem for these cars glow plugs go bad like spark plugs however the smoke would lead to bad mass airflow meter. it is not telling ecu corrcet miss. disconnect mass airflow meter. when cold see if this makes it start better. it should would means you need new m.a.f. glow plug issue take a test light place clamp on positive of battery then pull off glow plug connectors place tip of test light on glow plug the bad one will have a dull light unlike the good one which will be brighter. will need new plugs and wire harness four **** connectors and wire striper and crimper will fix concern good luck
Posted on Sep 01, 2009
SOURCE: 2002 VW Jetta won't start
Check the battery out put to see if it is at least 12.25 volts(may need to have it load checked).If the battery checks good,remove battery cables and clean them real shiney,also the battery terminals,and replace them back on the battery,WARNING,DO NOT DISCONNET THE BATTERY WITHOUT PLUGING A 12 VOLT POWER SOURSE INTO THE CIGARET LIGHTER PLUG,OR EQUAL.If you do not plug in a power sourse to the car,the computer will loose all it`s memory,and will have to go to the dealer to be reflashed.
Posted on Sep 21, 2009
Good chance you either need a new starter, or ignition switch. Also, check the battery terminals for any sulfur corrotion. If there is, clean off with water and baking soda mix to neutralize the acid. stiff wire brush the terminals if possible, but if you do not have a memory saver plugged into the aux voltage input(cigarette lighter), you will loose Radio, TCM, and ECM programming when batterey is disconnected.
Posted on Jan 15, 2010
The coil pack on these are bad about being defective. You need to check to see if you have power coming from your coil pack. If you do not try changing it out, this produces 60k +/- volts that goes through your ignition wires, to your spark plugs and ignites the gas on combustion with the piston. If it's not giving off a spark, thenyou're not getting power to fire off the engine.
Posted on Jan 24, 2010
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