Question about 1986 Porsche 911

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1986 porsche 911 Surging: Low rev high rev. .

Car been mothball for quite a while, when I finally got her started idle was good. after arming her up for about 15 minutes I gave her a little throttle, she instantly started to surge. Any idea what could be causing this, seeking! In the middle of building a smoke machine to check for vacuum leaks, any points would be appreciated..

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  • john levy Apr 20, 2014

    The surging was caused by a bad reference sensor: This sensor reads the sensor pin on the flywheel and sends a signal to the deme to regulate spark and fuel. Plus.



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Besides a leak on intake I will check the ECU just to make sure that thing is working as it was intended to, a sitting car usually have moisture build up and is not friendly with electronic components.

Posted on Dec 15, 2014


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