2000 Volkswagen Golf has trouble starting, battery and alternator have been replaced. The problem does not seem to be the starter or fuel. Any ideas?

SOUND LIKE ALTERNATOR.BUT CHECK BATTERY CABLES FOR CLEANESS AND TIGHTNESS.CHECK DRIVE BELT FOR LOOSENESS. CHECK ALTERNATOR FUSE.IF ALL IS GOOD YOUR ALTERNATOR FAULTY.BESURE TURN OFF RADIO FIRST AND INSTALL A PCM MEMORY IN CIGARETTE LIGHTER SOCKET.BEFORE REMOVING NEGATIVE BATTERY CABLE TO KEEP FROM LOSING PCM MEMORY WHEN BATTERY DISCONNECTED.

First problem starter.

The alternator cable connects to the upper post on the starter solenoid; the same post as the positive battery terminal.

its the Battery either it needs replaced all together or your terminals are not tight enough. Best way to check that for sure is try turning on your interior light if it is very dim or not on at all REPLACE

try the mass air sensor.......

This is a fuel related problem.

Replace the fuel pump.

this is not uncommon in any car, it just means that the car is getting older. it can be fixed by replacing the battery (if battery is old) or by reconditioning the starter, although it would not seem to be the proplem on such a new car

Probably the starter needs to be replaced. If it was the battery, you would have more problems cold than hot.

try and jump it. It seems as though your starter is not getting enough power

replace the fuel.............these things have mechanical fuel injection and not much ever goes wrong with them...............a good battery and starter motor......i don't believe you can hurt the glow plugs