my evo 9 is only running on cyl1. i had a check engine light pop up and it was for a crankshaft position sensor.i replaced it fired it up and still only ran on cyl 1. this time no check engine light. any insight is greatly apreciated.

car was started in the morning and ran fine went to start in the after noon and its running on the 1 cyl.

 

Free bump I need to know too

 

Have you pulled your spark plugs and checked them, also check your coil packs. If those aren't right you might have possibly shorted out the ecu.

 

you sure the injector plugs are still in tight? the clips that hold the plugs in get broken often when people mess with it.

this happened to me where the clips were nonexistent and the engine harness that goes by the fuel rail was tugged alittle, in turn loosening one of the injector plugs(hencing running like a subaru)

 

yeah checked all the plugs and plug gap all checked out. checked injector plugs all intact.i changed the intakke and exhaust cam position senors today and still not change.i cant figure it out i may be looking for an eco. anyway to bench test an ecu?

 

the signal voltage to the crankshaft sensor, check injector pulse

 

ok did some more looking at things. still hafta look at the injector voltage but i checked voltage at the crank sensors plug.holging it with the clip part down voltages read:top pin 12.4v,bottom right 5v, bottom left 20.4mv. can anyone confirm this?

i unpluged the maf and car would crank but wouldnt start.

this time i got the check engine light. codes were p0365,po113,p0365 pending.p0365 is camshaft position sensor b bank 1,p0113 is intake air temp circut high.

any insight here? both camshaft position sensors are new.

 

bump

 

Is it possible to install the crank or camshaft sensors the wrong way?

Do you have access to Evoscan? You can use the injector actuator to test that each injector is working?

How are you determining that it's only running on 1 cylinder?

Seems like you'd be getting some kind of misfire code doesn't it?

 

im checking the 1 cyle based on the heat of the header pipes and unplugging ignition wires. wam shaft sensors only go on 1 way crank can go on backwards but i know its on properly.

i agree its odd i dont get any codes.if i dont have this figured out this week i hafta bring it to the stealership

 

bump

 

i have no idea in the world how a car even runs on one cylinder. however. my best guesses are that 1. you cars f'd 2. check your in cabin fuses.... should be a 10a in the top left... that one most of all. 3 check the fuel rail for pressure to ensure your getting fuel. you could also remove the bottom portion of the back seat. turn the ignition on and listen for the pump whining. 4 either buy an ignition coil tester or pull the wires. put a plug in and lay it on the engine. have someone turn the motor over. and watch for a spark. if you have fuel. have spark. and still dont run... unclog your air filter. if you are missing spark or fuel then find the problem that is causing that issue.

 

For anyone with this issue it was fouled plugs aswell as a an ecu went bad

 

sorry to hear about the ECU!