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Many things cause rpms to fluxuate. I.e. dead miss due to faulty or failing spark plug or plug wires. Or any of the ignition components is the ck engine light on dash flashing when rpms "jump"? This will tell you wether or not the problem is a miss
many alternators will not register at 850rpm.s as the regulator requires a higher out put than 12.5v to start to work It should be charging 13.5v at 950-1000 rpms and move up to 14.5 from that rpms to a max voltage of 15.5v.l It could have dirty slip rings and worn brushes so I would remove it and have it bench tested as car tacho's at idle can be out and it may be idling slower than it actually reads
are you saying , it stalls (RPM on dash goes to 0)
or RPMs are below 800(hot and is wrong) ?
or that all the above is ok, but I have lost engine power?
if A/T transmission slip, (RPM goes way to high and MPG dont track RPM correctly)
is car an A/T
when asking for help , stated engine size and transmission options.
we dont know. and Civic sub model name is good to... we are blind here.
There is a lot to changing a ignition switch. If your key is in the dash, you will have to take it off. If it is on the steering column, you have to take that out. There is just no easy way to do it. It is a lot of little things that you change. You can do it, don't get me wrong. It is just rough sometimes cause everything has to go in perfect. Your choice of course, just being honest.
You have the wrong KEY if it won't turn any locks.
You can use the KEY fob from another Passat.
The one you have was most likey not the original
and the car was reprogrammed to except that FOB.
The Fuse panel Is inside the DRIVES side.
Open the Driver door. Look at the side of the DAShboard.
THat Giant "B" Shapped plastic cover pops off.
Check the fuses...IF any are broken,black or no good.
REplace them
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