Mechanics

8 CODES, WHAT THE HECK?

Volkswagen Other

Hi, I've got a 2000 VW Jetta 2.0L and the check engine light has been on for a year or so, and I just got them checked at an oil change and here is the list:
Po134 - 02 Sensor Ckt - no activity (bank 1 sensor 1)
P1128 - manufacturer controlled fuel and air metering
Po442 - Evap emission control system leak (small)
Po300 - Random/multiple cylinder misfire detected
Po301 - Cylinder 1 misfire detected
Po171 - System too lean (bank 1)
Po304 - Cylinder 4 misfire detected
Po302 - Cylinder 2 misfire detected

it has been getting poor gas milage and sometimes stutters at a stop light in drive. I've ordered an o2 sensor for before the catalytic converter. Looks like most of this could have been caused by a faulty one. Any idea if I am diagnosing it wrong. It is going in tomorrow to get the o2 sensor changed, so if you can reply asap, it would be great. Thanks a lot.
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Ddcyr40
February 19, 2007.




Check engine light on for a year is noooo good, I would start by replacing the 02 you have a code for and the misfires may go away but maybe not, the vw's have coil issues also, but start with what you know is bad the 02 sensor and maybe a maint tune up since its been running like that so long
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Tiny
CHEVYII
Feb 19, 2007.
What would you suggest for a tune-up? Plugs? I don't really know what else, air filter just was changed along with oil. It hasn't had the timing belt changed, or that I know of, (I've owned since 65,000 miles and it is at 89,000 now). Any idea on the labor of a timing belt? Anything you can give me here is much beneficial. Thanks

Tiny
Ddcyr40
Feb 19, 2007.
The 02 for starters, then plus and wires, you might want to check the manual on the t belt I think its at 90k and im not sure on the labor, but def what I listed first, in that order, and then reset the pcm and drive it for a while and see hwat happens, atleast you can do those repairs on your own and same chunks of cheese

Tiny
CHEVYII
Feb 19, 2007.
I replaced the o2 sensor, and has been running for over 2 weeks with no codes and good gas mileage. I guess that solved the problem. Thanks

Tiny
Ddcyr40
Mar 5, 2007.
Good job

Tiny
CHEVYII
Mar 5, 2007.

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