plz help.. random stalling on 96jetta

I had my car fully over hauled a few months back
changed:
fuel/air/oil filters/plugs & distributer
a cracked pipe on the exhausted recirculation
and had a new set of gauges put in to replace the poltergiest that made them tick uncontrollably when the car was off

now i randomlly stall
usaually after the car is hot(+ i live in hawaii)
+when im going down hill and downshifting
or when at a light and idling
or when i break into a turn

the odd thing is that when my rpms are above idle i dont lose my breaks/stearing untill the rpms drop below 5-9000
but the stepping on the gas does absoulutly nothing during that time.

the car won't start again till it cools off
iv'e tried a bunch of things...today im gonna reseal my windsheild since the seal got destroyed when the mech changed the gauges.
out :banghead:

ok it died all day today.. got it started after waiting for it to cool off and got it home .. me and my dad took it out later and got it to stall..then we check for a spark my sticking a screwdriver in one of the sparkplug cables and grounding it while we tire to start it...nada dam thing
we tried this when the car was running fime and got a good strong spark
hopefully someone knows what im talking about since i don't :loser: .
my mech will be informed asap too hopefully this helps him a bunch..

ok it died all day today.. got it started after waiting for it to cool off and got it home .. me and my dad took it out later and got it to stall..then we check for a spark my sticking a screwdriver in one of the sparkplug cables and grounding it while we tire to start it...nada dam thing
we tried this when the car was running fime and got a good strong spark
hopefully someone knows what im talking about since i don't :loser: .
my mech will be informed asap too hopefully this helps him a bunch..

did u try and learn how to drive stick, lmao j/k i cant help u there...i dont know much about stallin for no reason..

I have seen the main power realy play tricks like this on people. Tell your mechanic to replace this relay and I am sure you will not have this problem again.