1999 Boxster Engine Management Light - advise needed
1999 Boxster Engine Management Light - advise needed
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cGriffin

Original Poster:

2 posts

181 months

Thursday 14th August 2014
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An engine management light has appeared on my Dash. I have taken it in to have diagnostic tests and whilst the garage was unable to provide me with any fault codes stated the text associated was "Valve timing / solenoid issue, "tooth belt out of position Bank 1", "Cam Shaft adjustment Bank1", "Misfire - 1/2/3 RHS" has anyone had a similar problem and if so what was the conclusion?

thegoose

8,075 posts

228 months

Thursday 14th August 2014
quotequote all
Not had it myself but as there's no toothed belt (i.e.cam/timing belt) I'd suggest it's a variocam issue, but you really need it on a Porsche diagnostic machine, which can also be used to disable/activate the variocam system on each bank whilst the engine's running to check whether they're both working properly.

cGriffin

Original Poster:

2 posts

181 months

Thursday 14th August 2014
quotequote all
thanks for the feedback just need to get access to a garage with the correct diagnostic kit near Peterborough

Rockster

1,515 posts

178 months

Saturday 16th August 2014
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cGriffin said:
An engine management light has appeared on my Dash. I have taken it in to have diagnostic tests and whilst the garage was unable to provide me with any fault codes stated the text associated was "Valve timing / solenoid issue, "tooth belt out of position Bank 1", "Cam Shaft adjustment Bank1", "Misfire - 1/2/3 RHS" has anyone had a similar problem and if so what was the conclusion?
If one can place any confidence in the error texts without the error codes, reads like a VarioCam solenoid/actuator has gone bad.

That the engine is misfiring suggests a hard failure. (When my 02 Boxster suffered this problem it did not manifest any misfires. But I monitored short term fuel trims for a bit and they were going wild. When I talked to the tech about this he said it was the DME attempting to find some fueling setting that would result in the O2 sensor readings the DME wanted to see. The tech went on to say that after awhile the fueling could get bad enough to result in misfires.)

As I said above, my car's engine didn't misfire and in fact after I shut off the engine and restarted it managed to drive the car 30 miles home - taking it easy -- with no issues. But I got the car in the shop ASAP the next day. Had both the solenoid and actuator -- on the bank the error codes pointed to -- replaced.