View Full Version : 99 2.8 rough idle

07-29-2013, 02:56 PM
Pretty sure its aha code, car runs rough po says its off a tooth on the timing but I don't think so, has new plugs and wires, what's the easiest way to check the timing without putting the car into service position. I was reading about the pcv since both vcg are leaking it could be. Car has zero codes after 1000kms of driving.

07-29-2013, 03:02 PM
What about the coil pack?

07-29-2013, 06:08 PM
I would think it would missfire if it was a coil, runs strong to missfire, I'm still leaning towards pcv but I don't wanna rip the front off to check timing

07-29-2013, 07:47 PM
It could be the fuel injector.
My V6 is getting bad fuel trim and the car shake as one bank is offset.

I've ordered an injector rebuilt kit from (cant remember) on ebay to replace the filtering mesh, and I've bought an ultrasonic cleaner to clean the inside and the tip.

Figure 1 - Siemens basket filter

07-31-2013, 08:17 AM
Have you used VAGCOM to diagnostic your problem? (such as the timing, fuel trim, advance retard, etc)