ok
i need some help with troubleshooting.
i just bought a 98 a4 1.8t
i love the car.
the only thing is it acts up.
it bucks and bounces around, and it doesnt do it at a certain RPM. It does sometimes, at 3000 or so, but other times its all over the RPM range.
it looses ALL its power.
the guy said he just replaced the MAF sensor.
So i am driving along and the check engine light comes on, and i took it to get looked at. the code is a p0303 and thats a cylinder number 3 misfire.
i changed sparkplugs and it still had the engine light on. so i got a new coil and it is still doing the same thing, but now the light goes away and come back.
so i have no otehr ideas...
if anyone can help id REALLY appreciate it.
-Zach

 

try all new plugs, wires nd coil packs.. if that dont work give it a compression check?? good luck

 

P0303 not P3003.

 

my bad,
yes p0303
i did change the plugs and the coils....
my friend is going to compression check it for me soon
does anyone have any other ideas?

 

I had a bad fuel pressure regulator that was causing engine misfire.