If it is a 1.8 turbo the plugs are under the coil packs on top of the engine. A regular spark plug wrench will fit them. They are down in the block about six inches. They are easy to change. I changed them in about 30 min. The coil packs are held on by 2 torx screws.
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Have the car computer scanned for trouble codes. Hopefully the codes will identify the problem. Auto Zone and Advance Auto will do the scan, and once you have the codes, you can research what they mean on the web. Just do a search for "trouble code..." and the code number.
Check for battery to motor ground and battery to body ground for corrosion under mounting bolts. also check motor to body ground strap for corossion and overall condition. Bad ground can cause all sorts of problems. Also check all electrical connectors to glow plugs for corossion.
this car has what is called coil over ignition which means no plug wires or cap so if it is missing swap coil from cyl 2 and any other cyl then clear code and rerun car till light comes back on then check code if it is still cyl 2 missfire then replace that plug if code changes to the cylinder that 2's coil was on then replace that coil <that car does have a recall for coils> if car is not missing and you have that code most likely isnt an ignition problem but will have a small vaccume leak so check the small hoses for leaks. very common for fuel preasure regulater vaccume hose to brake from age
Check the heavy duty cables from the battery to the starter motor and solenoid and also the battery earthing (grounding?) - there terminals could be corroded / burned.
Hope this helps you a bit. If it does, a "Fixya" rating would be much appreciated. If it doesn't
help you, I'd be grateful if you didn't bother with a rating at all. Just come back and tell me what you found. Cheers, D
need relay layout for 2001VW Beetle 1.8 turbo having touble no power on seat warmers and outside temp not reading brake light is on and beeping need help. found all relay but dont know the right one need some help.