I was wondering if anyone can help me with this .. 2005 evo 8 mr

crank but no start.. fuel pump cutting on, and injectors are firing

everything occurs with key on engine off..

I am not getting a ground to my crank sensor, cam sensor, nor maf sensor. Instead its getting 8 volts. All other terminals of the above sensors (crank,cam, and maf) plug have the right voltage as far as 12v, 5v.

Another issue is with the ignition coil. I haven't been able to get my hands on a schematic for the ignition circuit but i am getting 6v coming from the signal line with it unplugged from the coil. i know it should be a ground.

Im pretty sure is the ecu but i just need some opinions on the issue.

ran separate ground and crank, cam, and maf are reading now. ( ecu is not holding the ground.. going to see if there is another ground wire for the ecu and check if its open.)

Now as far as the ignition coil... i used my test light to check if the coil was getting the signal to fire cylinder 1 and 4 constant power( not cycling power to ground) cylinder 2 and 3 firing ( cycling power to ground). i would think there's something else in between the the coil pack and the ecu on that circuit that could cause this but i dont have a schematic to see.

UPDATE:

replaced ecu and that solved ground and ignition coil constant power issue.
Now its not starting

Fuel- good
spark-check
timing -dead on point

when in evoscan with key on my timing reads 61 degrees but when i crank, it goes to 5. i going crazy right now as there aren't any codes coming up and the car will start for 1 second then stall. when it stalls if gives off a backfire pop as if the timing was off but it isn't. and i can smell unburnt fuel coming from the exhaust. i also have brand new plugs in there gapped at .025. Is it possible for the ignition coil to cause this or a crank angle sensor.

any feedback from the log ?

 

Unplug the sensors and check one by one if they are getting ground. they might share a commend wire between them

 

i know . thanks.

 

bump ttt for some info

 

anyone with any suggestions ?

 

You put a new ECU in the car did you put the correct Immobilizer code into the new ECU or disable it using ECUFlash????

 

yes i disabled it

 

any more backround info on your situation as far as did it just all of a sudden act up or something that got pregerssively worse? Were you or somebody messing around with the electronics beforehand?

 

Its a no start.. im getting fuel, im getting spark and timing is dead on. maybe the crank angle sensor but if it were that it wouldnt fire the spark plugs correct ?

 

i dont know wtf is going on and its driving me crazy. i have spark, im getting fuel, and i checked the timing (cam sprocket lines lining up with valve cover lines and crank marking lining up with tdc mark for 0 degrees on the lower cover)... i even disconnected the injectors and sprayed starter fluid. the only thing i got was backfire out the intake which suggests that the timing is off. this is base rom from an evo 8 with the immobilizer disabled...... Can someone send me a base evo 8 rom with the immobilizer disabled. maybe im not disabling it correctly.. im starting to run out of ideas

 

problem solved it was the camshaft sensor. couldnt even hold itself up on the radiator support...weak magnet... even though i bought one 1 month ago