Help my engine is in bad shape...

[KevinC]

I was on the track when my engine suddenly started running *very* rough towards the end of my first session. The CEL was on. I was barely able to limp back to the paddock and pulled these codes from my Durametric scan tool:

P0300 Porsche fault code 62 - Misfire damaging to cat. converter

P0301 Porsche fault code 63 - Cylinder 1 misfire damaging to cat. converter

P0304 Porsche fault code 66 - Cylinder 4 misfire damaging to cat. converter

P0305 Porsche fault code 67 - Cylinder 5 misfire damaging to cat. converter

P0306 Porsche fault code 68 - Cylinder 6 misfire damaging to cat. converter

P0341 Porsche fault code 112 - Camshaft sensor bank 1 Signal implausible

After limping it into a friends trailer and then into my garage and waiting a few weeks to return home from a trip, I see the following similar set of codes:

P0300 Porsche fault code 62 - Misfire damaging to cat. converter

P0306 Porsche fault code 68 - Cylinder 6 misfire damaging to cat. converter

P0341 Porsche fault code 112 - Camshaft sensor bank 1 Signal implausible

P1340 Porsche fault code 322 - Camshaft position with respect to crankshaft bank 1 below limit value

The engine still runs but it is very rough and vibrates badly. No smoke, no fluids, no nasty mechanical sounds.

It certainly sounds like something is going on with the camshaft position sensor. Does anyone have any experience with that? I'm praying that this is just an electrical problem with a bad sensor or a bad connection. Any help would be much appreciated.

The car is a 2000 Boxster S with 90K miles. No engine mods but lots of suspension mods.

Kevin

[juniinc]

Usually its the wire hardness.

many cases, cam position sensor is shorted with ground or shorted with B+?

U will need a OHM meter to ring em out.

new hardness might just take care of it

I was on the track when my engine suddenly started running *very* rough towards the end of my first session. The CEL was on. I was barely able to limp back to the paddock and pulled these codes from my Durametric scan tool:

P0300 Porsche fault code 62 - Misfire damaging to cat. converter

P0301 Porsche fault code 63 - Cylinder 1 misfire damaging to cat. converter

P0304 Porsche fault code 66 - Cylinder 4 misfire damaging to cat. converter

P0305 Porsche fault code 67 - Cylinder 5 misfire damaging to cat. converter

P0306 Porsche fault code 68 - Cylinder 6 misfire damaging to cat. converter

P0341 Porsche fault code 112 - Camshaft sensor bank 1 Signal implausible

After limping it into a friends trailer and then into my garage and waiting a few weeks to return home from a trip, I see the following similar set of codes:

P0300 Porsche fault code 62 - Misfire damaging to cat. converter

P0306 Porsche fault code 68 - Cylinder 6 misfire damaging to cat. converter

P0341 Porsche fault code 112 - Camshaft sensor bank 1 Signal implausible

P1340 Porsche fault code 322 - Camshaft position with respect to crankshaft bank 1 below limit value

The engine still runs but it is very rough and vibrates badly. No smoke, no fluids, no nasty mechanical sounds.

It certainly sounds like something is going on with the camshaft position sensor. Does anyone have any experience with that? I'm praying that this is just an electrical problem with a bad sensor or a bad connection. Any help would be much appreciated.

The car is a 2000 Boxster S with 90K miles. No engine mods but lots of suspension mods.

Kevin

Edited June 10, 2008 by juniinc

[KevinC]

Yikes! My mechanic is saying that the engine is toast. He found lots of metal in the oil. He's assuming that it's an intermediate shaft failure. Is that likely given that the engine still runs?