20 Most Recent 2003 Volkswagen Passat Questions & Answers

no enigine told gas or diesel. i cant see what you are doing rules : never run any pump dry, it is fuel lubricated and cooled. if engine cranks and will not run (not told you) then measure pump pressure only cranking, cranking matters. PSI cranking only matters, dead engine,. some cars have key on prime pulse others do not. or based on air temps, yes/no. rules complex. avoid prime pump tests. (savvy?) some new bosch pumps are 100% silent so noise tests are not good now, use use cranking PSI pressure only if wise. and hate taking a bath in fuel. 11vdc to pump pins cranked. (11vdc is battery resistance drop) PSI cranked. that is what matters. below is battery voltage drop cranked, all 100% good see the alternator wake-up, IT MUST./ 11vdc cranked and 10.5 to pump (ohms laws Vdrop normal) scopes RULE!

You can't bypass the power steering pump. You would NOT have enough strength to steer. The only thing you can bypass is the A/C compressor and you do that by removing it and installing a bypass pulley. Not for steering though. If you want to test the theory find a quiet and gentle hill, turn the engine off and hand brake off and roll. Try and steer. Don't forget you also have no brake assist either, so don't pick up too much speed. ..

Question edited for clarity. Question moved to model category. You can't bypass the power steering pump. You would NOT have enough strength to steer. The only thing you can bypass is the A/C compressor and you do that by removing it and installing a bypass pulley. Not for steering though. If you want to test the theory find a quiet and gentle hill, turn the engine off and hand brake off and roll. Try and steer. Don't forget you also have no brake assist either, so don't pick up too much speed. ..

Question edited for clarity. Question moved to sub category. Known issue on the Passat. The P0348 code is stored in the PCM when the voltage reading from the camshaft position sensor circuit for camshaft sensor A in engine bank 2 is too high. This code may be stored with crankshaft sensor codes. https://www.google.com/search?q=p0348+volkswagen+passat ..

start with the fuel filter.

Ok did you check to see if it's firing,then check for compression, then check your fuel pressure and if the are ok it should start and make sure you have a fully charge battery

Does the engine not turn when the key is turned? Does it turn and not start? Does it turn and sound like it is trying to start? Need more information

Those are known to stretch the timing chains once they get up in miles to the point where the engine goes out of mechanical crankshaft to camshaft timing enough not start. In order to confirm this is the issue a person would have to turn the crankshaft to cyl. 1 top dead center and see if the camshaft timing marks line up where they should. I can elaborate if this is something you'd like to do yourself.

i don't know. please check the connecting wire harness and connector. it is possible there may be a poor connection due to corrosion , oil grease or dirt. perhaps previous sensor was OK. also, you may be able to test the connecting wire with a jumper wire.

All those codes mean a specific cylinder missfire. Start with tune up. Plugs, wires & air & fuel filters.

Either you installed the wrong temperature sensor or the new one is bad or bad wiring.

http://knigaproavto.ru/shemy/en/volkswagen/passat/96-volkswagen-passat-b7-fuse-box-diagram-2010-2015.html

if leaking it will make noise when you loose enough fluid, best to get it checked now

I suggest you try one of those instant download manuals. My brother ( a mechanic) buys it when he can't fix some technical issue He buys from www.reliable-store.com . A lot of mechanics actually do this. Website is very good for this. Must try it !!

Other than the stop engine now, is it running ok??

Your immobilization unit don't see the key. In the old key fob contains a chip that was set at a frequency that's compatible with the unit hidden in the vehicle telling it you r the owner and allow you to keep it running.

check that the vacuum line is feeding the servo any leaks in the vacuum line will stop the brakes from working abs relays on the pedal pressure to activate abs, if you can hear a hissing sound from the servo then the servo is leaking inside this is if the vacuum line is not damaged, use a pipe or screwdriver on the case and put to your ear and you should hear if its hissing or not.