Well was it the idle switch?

The engine (AKA air pump) needs fuel and ignition.> So there is some problem or problems with either:> Fuel> Ignition> Compression (which could mean exhaust also)>

Yes it could be a fuel pressure problem. Check the fuses and also the> ground wires that might go to the cold start valve bolt. Hooking up a VOM> to the Fuel Pressure Regulator to measure the current might help determine> if you have problems with wiring to it.> BTW I have replaced a couple of CIS-E fuel distributors that were causing> problems like yours even though I tried to clean out the plunger in the> center first.>

I was also thinking that it could be some blockage in the exhaust. I had

problem with my rear muffler restricting the flow of exhaust on my 91> Passat. I could hear the problem though and feel the power loss. If I> slowed down the blockage may open back up but it would soon return. Of> course another rear muffler solved that problem.> You could use a vacuum gauge to help determine if this is your problem.>

Oh I remember another Jetta that had too much oil pressure causing the> hydraulic lifters to pump up and actually cause the valves to stay open

cause a compression loss. Freaky problem that I have never seen before.> 8^)> -> later,> dave> (One out of many daves)>