I bought this used Passat and it was running ok and now it wants to drop back the rpms at about 1800 to slow idle. I can't even drive it around the parking lot now cause it keeps cutting out at that rpm.

I have spongy brakes, and checked both fluids. Brake fluid is fine, hydraulic fluid is low--can I drive the car to get it looked at?

1999 Volkswagon Passat wagon 1.8 turbo Has been running great. Got gas yesterday (not empty,,about 1/4 tank left), started car, went about 20 yards. Car died. Would not start again. Sounded like it wanted to a couple times. Sounded like it was not getting gas. I put a new pump in it. Still not starting. I disconected fuel pump from engine side, it is pumping out fine. Removed plugs, poured some gas, put plugs back in, still no go. Put spark tester to coils. All lighted up. Used tester and put plugs on the end, 3 of four did not seem to light up. One (back towards firewall) lit up well. Battery is at 11.7 now. motor spins, no go. Checked fuse for fuel pump. Ok. Ideas?

It has not overheated it works fine wat could it bee ?

It makes the sound for about 10 to 15 seconds and stop . It also shakes after its in park for 3 mins . Randomly , and I just spent 1500 getting all the leaks fixed and a major tune up .

ignition coil and spark plug are good

Does a relay control the headlamp(s)?

The car doesnt go, it just sits there and when i put it into drive it will start making a clicking sound. Then when i put it into park it will make the clicking sound go faster for a couple of seconds then stop. I read online that it could be an internal seal but i dont see why the car doesnt actually drive.