Idle Speed

[doctorDHD@xxxx]

I had a small oil leak, that seemed to be coming from the right side valve 
cover gasket so I cleaned off all the oil and tightened a few valve cover 
gaskets. The leak seemed worse but the valve cover gasket was dry. The oil was 
coming from a "hole" in the upper left hand side of the right timing chain cover. 
I quickly figured out that this "hole" was for bolt that I was missing ever 
since I bought the car last October! I put a bolt in, snugged it down and 
viola, no more leak. I drove the car and notice something very interesting. It 
now idled smoothly at the 750 rpm it was supposed to. I was ecstatic. So all 
this stuff about the DeLorean PRV being so sensitive to any vacuum leaks was 
true I said to myself. When I got the car home the leak was fixed but while 
the engine was running I touched the wires going to the idle speed motor and 
all of a sudden the idle speed came back up to its previous state of rolling up 
and down between 950 and 1200. It idles fine with the idle speed motor 
disconnected. Is this a bad ECU? What is the best way to trouble shoot this?

Dave & 6530


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