20 Most Recent 2004 Volkswagen Passat - Page 4 Questions & Answers

bad battery- bad coil- ect did you replace the water level censer replug it?

Did you change the oil filter? Make sure you use the large one for the TDi. I had the same problem after replacing my oil pump and cleaning the pick up screen. Turns out it was just the synthetic oil washing the gunk out of the motor and quickly clogging the oil filter. You can verify the oil pump output by connecting an after market oil pressure gauge to the forward left top corner of the oil cooler/filter mount where you will find a removable screw giving you access to a port leading directly to the oil pump. It is awkward to remove then install a line to a pressure gauge but be glad it is at least there so you can verify output pressure. The fitting on the rearward side of the oil cooler/filter mount that has the turbo oil supply line is a good place to verify engine oil pressure with a gauge. Change your filter first then do what I did and cut the old filter open to see all the junk that may be clogging your filter. Also, do yourself and us a favor by using spell checker and proof read before posting.

The ECM sends a GND signal to the Fuel Pump relay to switch it ON. When 'jumping' relays, there is a risk that you might feed +12V to Gnd switch line, in this case the ECM line. If left too long, this would blow the diodes in the ECM. Try using another ECM. Try following the ignition circuit from the ignition coil back to the ECM. One of the wires connected to coil should have +12v when IGN on. Sparking only happens when ECM sends GND pulses to the coil. If ECM is OK, check camshaft position sensor, which is also usually referred to by the ECM for ignition firing.

Press the number you want for example no 1, the load,hold the cd to the slot and after about a second and a half it will grab the cd and pullit in,do the same for all the others.

follow this link to VW TDi forum as this is the best place to get your querry answered

Hi. Your best option is to go to ErWin, Google will take you there. Have your vin ready.

yea.. check the fuse first. secondly most possible cause is the wire behind the panel located on left foot wall of driver side. remove the that panel check for broken or connector connection and wire going in connector. push it in and try the switch with door unlock or key on on position. could be stuck also. try to open it(flat screw driver) while someone use the switch

YES

With all of the low voltage problems going on here I would check the body computer. That is the only thing I can think of that would cause all of this. Some others may have suggestions on this.

did you check the fuse box? you may have a missing fuse that you didnt realize that was missing.

PROBABLY FAULTY SWICH BUT NEED MORE INFO

Have you checked whether your coils are working,if the spark if is coming at all is the expected for the spark plugs? Have you checked whether your spark plugs are good,or are black covered with unburned fuel an a lot of carbon? Also check whether you do have coming out from the fuel injectors,if the pressure of the injectors is the correct one . This should be carried out by using a fuel pressure tester. If can not do it please ask a qualified mechanic to help.