Have a Car Question? Ask a Mechanic Online.
It sounds like you have another question open another profile username. We need to continue on that post unless you can not access it any longer?
Is the crank sensor producing a AC voltage signal across both pins as the engine is being cranked?
It was hard to get to but I put a new one in,how should I check the voltage?
Do I need to take it out again?when I was
layingo the floor I heard a noise like a light bulb popping but there was not
You need to unplug the crank sensor, touch a volt meter set to AC volts to both pins and crank the engine. The sensor should be producing a rapid varying signal.
Sorry we can not call you, I took a break for a shower and some dinner since I did not hear back from you.
It appears your crank sensor is reading. You now need to see if the coil is bad. Unplug the coil. With the key on one wire should have power. The other wires should pulse a fast ground signal while cranking. If you get a ground signal then the coil is bad. If you get no ground signal then you need a scan tool to see if the crank sensor is getting a signal to the PCM. If its not then the wires are damaged. If it is then the PCM is bad. Another way to verify the signal is getting to the PCM is by the check engine light. The check engine light should remain on while cranking the engine indicating the PCM is seeing a crank signal.
Found broke wire engine light stays on while cranking still no fire
Did you use a scan too tool see if there is a crank signal shown in the PCM. If there is and there is no ground pulse to the coil then the PCM is bad and has to be replaced.
Why is the plastic that covers the magnet on the crank sensor being rub off so fast
Oh, this is useful information. This is the reason your losing crank signal. The flywheel is hitting the sensor. This means the flywheel is damaged needing to be replaced or the crankshaft thrust washer is bad and the crankshaft is moving lateral in the engine allowing the flywheel to move back and forth. If a OEM sensor is being used and its still hitting, that means the transaxle needs to be removed to inspect the flywheel and crankshaft runout.
The yellow and brown wire to the crank sensor was broke somewhere so I ran a new wire. Still no fire. Check crank sensor again and no voltage. Replaced crank sensor again and no fire. Removed crank sensor and it was damaged also. Your flywheel idea is probably correct but I don't believe im going to get into that sounds like alot of work
If the crank sensor end is getting damaged and you cant remove the trans then it will need to go to a shop to have this addressed, prior to continuing any more diagnostics.