I have a 1992 960 wagon. Recently the following repairs have occured: head replacement (broken timing belt), replace mass air flow sensor and replaced starter. Now, on occasions, the car won't start. All instrument panel lights illuminate, radio works, etc. but the starter will not turn-over. I first thought this was a loose wire connection in the starter circuit, but the car may crank fine 10 or 15 times between instances. When the car does crank it does so right away.... no erractic idling or slow cranking or gas smell.

Anyone's diagnosis is appreciated.

Thanks, Greg Vaughn