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3.2 Idle Problem
A shop is in the process of installing an '88 3.2 engine in my '73 911. It's in and complete but my mechanic has been chasing a problem for a few days. Engine is hard to start and at idle, it will cut out for a while and die. Sometimes it will idle well for a couple of minutes and then this problem will start. Anything off idle, it runs fine. He pulled of an injector electrical plug and attached a trouble light and when it was idling okay (a little rough because one injector wasn't functional) the light was pulsing as normal. When the problem kicked in, you could see the light going dim or pulsing out of sync. Also, when you put your hand on the DME relay, you could feel it clicking like crazy when the idle problem started. The DME and the relay have been replaced with known good ones and still have the problem. Flywheel sensors have been replaced and gaps checked, double checked. All injectors were plugged, so they were replaced. $$$ This engine is unknown to me as I bought it from someone long distance. Also, it came without a DME and harness, so there is another variable. Have learned some tough lessons on this whole deal so far, but has anyone experienced anything like this?
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