can the combined knowledge of the Scirocco list solvce a 1.8t isse?

[mkii@nycap.rr.com (Josh Able)]

Car has issues, we wired up the port for it, and these are the 6 codes

174(9?)53 P1545 035 - Throttle Pos Contr. Malfunction

16885 P0501 035
Vehicle speed sensor range/performance

18010 P1602 035
Power supply (B+) terminal 30 low voltage

17834 P1426 035
Tank vent valve

17956 P1548 035
Boost pressure contr. valve lsp

17881 P1473 035
Evap emission contr. ldp circ. open circ.

Out of those obviously some are due to the engine swap and could be ignored.

The throttle sounded like a good place to start so we pulled it off. The
plastic plug on it was broken, so we figured we solved the problem, we
replaced the throttle body, yet the problem continues unchanged, though the
code is now cleared.

I at first figured the Boost pressure one was due to assorted aftermarket
crap, do you think that's the case?
I have normal boost, though I noticed that my wastegate (vents
atmospherically) seems to not make as much noise as it used to.

the timing is perfect, the compression is 150 across the board, changed the
MAF without effect, checked both 02 sensors and the seem fine, changed the
spark plugs.

we did NOT change the coilpacks, but the problem doesn't seem to be in line
with them as the source.



I can hold it at 1000rpms and its perfect.

Idle is still low, and when you bring the rpms up to 1500 they move up and
then down on their own, this is the case all the way till about 3100 rpms.
Once the rpms get to about 3100 then it runs normal, and everything seems
fine.

any clues???
_______


Josh Able

"If you're already walking on thin ice, you might as well dance." -Gil
Atkinson

ICQ: 66561345