I was going to take my 96 Cobra to work today. It fired up and died. I tried to restart it and it sounded like the starter was not engaging. I did not have much time to do a diag but I did check a few things.
Had my wife attempt to start the car, saw the belt system spins. I pulled the oil cap and can see the valvetrain move as well. I hear the fuel pump prime (didn't check pressure). I noticed the tachometer was at 0 RPM during turning over (usually would indicate a Crank Pos Sensor failure) I hooked up a multimeter to an injector and got about 8VDC during cranking. I popped a plug wire from the driver coil pack and put the leads in the coil contact and grounded to the battery, there was about 10(ish) volts. I know those aren't accurate steps to troubleshoot the spark or injection but I was in a rush.
It sounds like the starter is freewheeling but it is clearly turning the engine over. I was suspecting maybe the timing chain jumped time but I would think that it would still have some sort of stumble or attempt to fire. It does not.
I will be looking deeper into it tomorrow. Any input would be great.
Had my wife attempt to start the car, saw the belt system spins. I pulled the oil cap and can see the valvetrain move as well. I hear the fuel pump prime (didn't check pressure). I noticed the tachometer was at 0 RPM during turning over (usually would indicate a Crank Pos Sensor failure) I hooked up a multimeter to an injector and got about 8VDC during cranking. I popped a plug wire from the driver coil pack and put the leads in the coil contact and grounded to the battery, there was about 10(ish) volts. I know those aren't accurate steps to troubleshoot the spark or injection but I was in a rush.
It sounds like the starter is freewheeling but it is clearly turning the engine over. I was suspecting maybe the timing chain jumped time but I would think that it would still have some sort of stumble or attempt to fire. It does not.
I will be looking deeper into it tomorrow. Any input would be great.