Water and oil mixing in my car engine vw golf mk3 cl 1.4l

Bad radiator, blown head gasket.

You need to check that the alternator is charging the battery.

Here is a very helpful link to a wiring diagram for your VW's fuse box.

Wiring Diagram for CE2 vehicles

I hope that this helps!

Here you have the ignition diagram for a mk3 1994 VW Golf 1.6 ABU engine code:

a car of that year should have an ecu controlling fuel air mix etc. this normally controls the timing.
To reset the ecu on my '95 VW Golf disconnect the battery (negative / black terminal) for 15-30 minutes depending on who you ask. So I do 30 minutes.
If it has central locking make sure you don't leave the keys in the car when reconnect it. swich on the ignition without starting the engine so the dash lights up with the oil light etc. for 30 seconds then off for 10 seconds. then start your car. It will relearn so it will run a bit rough for a while but should settle down. take it for a spin on different types of road ie. slow and fast.

You are experiencing detonation. Main causes are:

• Low octane fuel - Use higher octane rating fuel.
  
• Incorrect ignition timing - Readjust timing
• Too high compression ratio(due to engine mods such as skimmed head or high compression pistons) - replace modified parts
  
• Air/fuel mix too lean - Replace fuel filter and readjust.
  

hi i have the same problem.but i cat find what to do.iff u eill find out please le me know.07853592087

i agree it could be,if you havent changed the oil and filter lately do that first using the correct oil grade if that fails let me know then we can go a step further

www.ebookmanual.net/vw-golf-jetta-service-and-repair-manual.html

i would start by cleaning out the throttle body. they collect soot and not have to be a lot either for it to mess up the idle speed, i had trhis on mine soon as i dipped the clutch to slow down the rpm dropped to about 400 to stall, i cleaned throttle body out ( taking air intake off and wipe round inside and the butterfly will be enough) and now it idles and the rpm dont drop below 900