2003 Jetta 1.8T misfires, dead oxygen sensor

In article <B%i4k.3716$Mc.2099@read1.cgocable.net>,
"Craig" <turboscirocco.RemoveThis@gmail.com> wrote:

> If it was due to the colant light flashing when cold then they replaced the
> coolant resevoir. This is VERY common. You should check the coolant sensor
> yourseld. Its on the drivers side of the head in the top of the coolant
> flang. That year car could still have the black sensor.\

Unfortunately, she lives 580 miles away. However, our son lives out
there close to her and I'll have him check it.

Thanks!


>
> "William Maslin" <CATmaslin.RemoveThis@cvm.msstate.edu> wrote in message
> news:CATmaslin-98545C.18185012062008@nntp.msstate.edu...
> > In article <Lxk3k.6860$xZ.423@nlpi070.nbdc.sbc.com>,
> > "dave AKA vwdoc1" <vwdoc1nospam.RemoveThis@pleasehotmail.com> wrote:
> >
> >> I agree with Craig.
> >> Since you have the 1.8t (1.8-liter turbocharged) engine each spark plug
> >> should have its own coil. Some of the newer engines will have coils that
> >> might pop up off of the plugs creating a misfire. People have devised
> >> ways
> >> to secure these coils from popping up.
> >> The Coolant Temperature Sensor can create a rich mixture so that needs to
> >> be
> >> checked out. It might not even throw a DTC either.
> >> Someone needs to plug into the computer to see what is happening there.
> >> Guessing can be very costly!!!
> >> Other things could be visually checked such as the color and level of the
> >> engine oil. The color of the spark plug electrodes. Any cracked or
> >> loose
> >> vacuum hoses/connections...........etc.
> >>
> >> IF the CTS is bad and has not been changed then it could cause the 02
> >> sensor
> >> to go out again! 8^)
> >> Also using the correct spark plugs will help the performance of this
> >> turbocharged engine. BOSCH Plats are NOT the ones, but this is JMHO. I
> >> think the preferred ones for performance will have 3 side electrodes.
> >
> > The plugs were replaced at 40K at a VW dealer so they should be the
> > correct plugs. I emailed her to ask which coolant sensor they replaced.
> > It might have been the reservoir sensor.
> >
> > BIll