studdering car

**pa4ul** · 10-02-2008 12:01 PM

OKay my car studders and i cant find the problem ive checked for vac leaks ive replaced the coilpacks spark plugs fuel filter any other ideas>? It seems the studdering lessens when the AC is turned on but when its off it shakes hard. Whats the next step?

**BNZ TOY** · 10-02-2008 12:11 PM

You might want to be more specific. Is this during accel, braking, building boost, after venting a bov, wot, cruising, etc?

do a search on "lurching, surging"

**pa4ul** · 10-02-2008 01:03 PM

while its sitting at idle. AT park it does it also and when its in drive it does it also ive taken it to a shop and they replaces the Thermal plug and a vaccume line and also the tension cam gear and replaced the gaskets and it still idles rough. It dosent seem to have a problem acclerating and it runs fine while driving. It just has a rough idle like i said. ive gone through most of the topics and have found no answers to my question.

**BNZ TOY** · 10-02-2008 01:23 PM

Are you idling at a low rpm? like <600?

On the Talon, there was a screw somewhere you could turn to adjust the rpm setting at idle. I'm really not sure about the A4 or if this is even your issue.