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loping idle

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As I mentioned in some past posts, I cleaned my MAF in my 2000 Boxster this weekend because the Porsche dealer said the codes indicated a low voltage max limit had been reached.

The CEL is now off, but I've been getting some idle loping. When I come to a stop light, the idle drops to around 300 and then just before it stalls, it catches itself and goes back up. It does this about once every 3 to 5 seconds.

I'm not getting any other codes from the ODB, so where should I look first to remedy this issue?



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I would check and see if your throttle butterfly is gummed up with carbon. Do a search here and you will see that many idle problems are related to carbon buildup and the throttle butterfly. Cleaning is also covered...

Thanks, I see there are several posts.

So, the 2000 with the e-accelerator throttle body can be cleaned without actually removing it from the engine? Did I understand that correctly from the posts?

Also, should the engine be running when I spray the carb spray/cleaner into the throttle body?



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The throttle body does not have to be removed - but it is easier to clean with it off the car (IMHO). It can be easily taken off - four bolts and the electrical connector as I recall.

Here is one I removed at a work on cars day last year (2000 Boxster). Tariq had the same problem with an occasional erratic idle. Cleaning and reinstalling did the trick.


(my hand - Tool Pants pic)

The car does not need to be running when cleaning since you will need to open the butterfly with your fingers to clean around and behind it.

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