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Hello everyone, finally got the diagnostic adapter from China and installed the software and got it all running. Next time I will not save 20 bucks by ordering on eBay but will buy one down the street.

My 99 VW has this issue of rough running and when you give it gas a severe hesitation / bog down. I replaced the fuel pump and filter and made sure all the lines were clean before I got the adapter. Here are the codes that it gave me when I hooked up:

P0304 - Cylinder 4 misfire detected
P0141 - O2 Sensor Heater Circuit
P0140 - O2 Sensor Circuit no Activity Detected
P1544 - No description
P0102 - Mass or Volume Air Flow "A" Circuit Low
P0112 - Intake Air Tempature Sensor 1 Curcuit Low
B4023 - No Description

I cleared all the codes and let it run for awhile and now it reports the pending code:

P0301 - Cylinder 1 misfire detected

From these codes where do you think I look next?

Milli
 
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