IT SHUT OFF ON ME WHEN I WAS DRIVING DOWN THE ROAD WON;T START IT HAD BEEN RUNNING RUFF AND KIND OF SHAKIE FOR A WHILE
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1997 Mazda Millenia
Question: MY CAR JUST SUT OFF AND WON;T START
Answer #1patrick mannion from Greg Solow's Engine Room, January 02, 2011, 15:38Master
Was the Check Engine Light on prior to the engine stop running if so codes will be in the computer that may help diagnose what is wrong.
It could be many things, unfortunately and without experiencing the problem first hand or being able to do some basic diagnostic tests its hard to say.
The engine needs three things to start, fuel (gasoline), ignition (spark) and mechanical integrity (it must develop compression in each cylinder to start ie mechanical components must be in synchronization with each other. If it had run well previous to this no start condition chances are the engine is well mechanically. Had the Check Engine light been on? The engine may have lost spark or fuel which could be due to any one of a number of sensors having failed or the fuel pump or related components are not delivering fuel to the fuel injectors. The engine uses many sensors to report engine temperature, air flow into the engine, crankshaft and crank shaft position sensors to allow the computer in your car to make calculations controlling fuel and spark to the cylinders. It is hard to speculate without being able to hear the engine crank over and do some preliminary tests to determine the cause of your no start condition.