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993 Won't decelerate

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Old 03-14-2015, 04:25 PM
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PNW911
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Default 993 Won't decelerate

My 1995- 993 with tiptronic does not decelerate normally below 2500 when I lift the throttle- a recent occurrence. It just carries on with steady revs. Have searched forums with no success- and checked throttle return spring. Also cleaned MAF, PO replaced O2, TDC sensors, etc. Any leads appreciated- thanks!

Am otherwise loving it- metallic grey on red. My 6th Porsche- first ever auto (tip) trans- which is truly a blast to drive- love the paddle shifting and the bulletproof feel. (Still have arena red/ black 993tt for summertime...)
Old 03-14-2015, 06:13 PM
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Steve Weiner-Rennsport Systems
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Check the engine VERY thoroughly for vacuum leaks.
Old 03-14-2015, 06:56 PM
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MarkD
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And make sure floor mat isn't binding the base of the gas pedal
Old 03-14-2015, 10:58 PM
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Eurotrio
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DME. My car would do that some times, especially when cold outside. Changed DME, and no rev hang now.
Old 03-16-2015, 12:22 AM
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PNW911
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Thanks Men! DME relay is new, gas pedal unrestricted and new vacuum all hoses all look ok. Should there be a vacuum hose to the DME relay? Searched web and Streather book for pix with no success...



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