how do i test a crankshaft position sensor on an evo 9?what woult the simptoms be if it went bad

 

you would not get any spark.. the car would not fire up. is it not starting?

im not positive , but i believe you dont get any fuel also.

 

the car only fires on cyl 1. the rest are dead. i thouht my timing belt jumped a tooth but i was wrong.

 

I went throught this nightmare a few weeks ago and for about 4 days changed everything i could think of and in the end was just a stupid short in the signal wire to the crank sensor.. i was told by everyone with evo experience that crank sensors dont go bad often, I finally believe it. what does go bad often are the cam angle sensors which is the one on the front of the head.

only 1 cyl firing is super odd.

 

so you tihnk it could be a cam angle sensor? id much rather change that out lol . what were your symptoms of the crank sensor short?

 

i had a crank angle sensor die and it only fired on 1 and 2. it's because the waveform goes to ****, and it doesn't know where to fire correctly. Try swapping over the intake and exhaust cam angle sensors and see if it will start.

(will evo9's start with no mivec cam angle sensor plugged in?)

 

When a magical broken bolt managed to teleport into my lower timing cover and destroy everything, I had no power at the fuel pump or ignition.

 

If it's your crank angle sensor you won't get spark nor fuel.

Had my timing belt tensioner pulley let go at 40k miles and the ball bearings destroyed the sensor.

 

no spark or fuel. the intake and exhaust cam sensors are different somehow, i had swapped those over and the motor threw a code and shut off after running a few seconds, swapped them back and ran smooth as butter.. they look identical dunno why that happened.

the fact that 1 cyl is working means the signal is properly getting to the ecu, so you might have a bad cam sensor.. if not that then go after than crank sensor.

 

o man that doesnt sound pretty...ill check that out tmo when i get the car back together enough to try to start it......turn out this might be a blessing in disguise.i found an oil leak hoopefully that is now fixed

 

I don't believe the cam angle sensors themselves are any different. They have the same part number and look identical. You should be able to swap them.

 

ok got the car together enough to start it and run it off of my parents mini vans alternator .... it cranked like it did before (only firing on cyl 1) then when i stopped cranking it putted a bit and started to run... only on 1 cyl still only know this bc that was the only piped that was hot on the header... i tried unplugging the crank senor and it just cranks and doesnt fire at all. any other ideas?

 

swap over the intake and exhaust cam angle sensors.
try again

 

Hey how did you end up fixing ur problem. Im having similar problem right now with my evo 8.


Thank bro!

 

It was fouled plugs in combination with my ecu not functioning properly