I have read many different forums and still i have not found a solution... maybe you can help me?
1994 jetta 2.0 5-speed GL with a/c. bought the car from my father-out-law, it has a known hesitation/misfire/stumble. it is at 160,000km (100,000 miles) and is generaly very well maint
hesitation / stumble / misfire happens only above 1400 RPM (both with driving or in neutral) but goes away if you open up the throttle to more then about 60%. only tends to do it while light acceleration, or cruising along (at all speeds) does not do it while hard acceleration. say you have your foot in a fixed position that allows you to travel at 50 mph and you keep your foot there, it will stop doing it as the road goes from flat into a hill.
one more thing... say you are cruising at 30 mph, and it is doing its hesitation thing, if you turn the key off and right back on (kinda like bomb-starting) problem goes away completly for about an hour or until you park and turn off.
my father-out-law thinks the problem seemed to start shortly after getting a new fuel tank in the car.
since problem has started we have ;
-changes plugs (2 times), wires (2 times), pcv, O2 senor, checked fuel pressure, replace MAF, even tried swapping the computer
1994 jetta 2.0 5-speed GL with a/c. bought the car from my father-out-law, it has a known hesitation/misfire/stumble. it is at 160,000km (100,000 miles) and is generaly very well maint
hesitation / stumble / misfire happens only above 1400 RPM (both with driving or in neutral) but goes away if you open up the throttle to more then about 60%. only tends to do it while light acceleration, or cruising along (at all speeds) does not do it while hard acceleration. say you have your foot in a fixed position that allows you to travel at 50 mph and you keep your foot there, it will stop doing it as the road goes from flat into a hill.
one more thing... say you are cruising at 30 mph, and it is doing its hesitation thing, if you turn the key off and right back on (kinda like bomb-starting) problem goes away completly for about an hour or until you park and turn off.
my father-out-law thinks the problem seemed to start shortly after getting a new fuel tank in the car.
since problem has started we have ;
-changes plugs (2 times), wires (2 times), pcv, O2 senor, checked fuel pressure, replace MAF, even tried swapping the computer
Aug 3, 2010 at 9:52 AM