Lost spark or my marbles

Ok I go for a drive 91 GTI 1.8 8V get a mile or so RPMs start to drop engine dies. I stop. Starts right back up- minute later same thing - I coast shift to Neutral (automatic) flick ignition off on rpms pickup and return to normal for the next 30 seconds - Then same thing happens over and over-
Next day everything is fine for a few days thensame frickn thing happens (Replaced Ignition module - no help) Any ideas ? Anyone ? Please ?
:mad::eek7::mad::eek7::eek7::mad:

Are you sure it's losing spark? Have you thought about the fuel pump relay?

Are you sure it's losing spark? Have you thought about the fuel pump relay?

I'm not sure about the spark - its just a guess . The engine will "choke and sputter" till it dies or I flick ign ition on/off -

Then it's fine for a 1/2 mile or so - Any idea how i could tell if its spark or not while I'm driving ? Relay sounds like an idea -I could put a gauge on the fuel rail and watch it while driving problem is it only happens once in a while - Do you know how to check the relay off hand- My VW book seems to have taken a walk...

Watching the fuel pressure is a good idea if you can watch it as it dies. You can try feeling the relay when it dies to see if it's getting too hot. It's position #6, upper right. Relays are difficult to test but you can try inserting a jumper wire into the relay's two larger slots (#27 & #33) on the fuse panel to bypass the relay & see if the problem stops. A failing main or lift pump could also be at fault.