enging light on...Help

[tongva]

i got an s14 with a check engine light..so i hook up my computer to the obd2 and the codes that its givin me is the mass airflow, knock sensor, and crankshaft out of place.:confused:.. drives okay but sometimes it will just cut out for a second.. kinda feels like it could be fuel injecters but ??? does any one know what the problem could be

thnks

[drftthatshit]

why dont you replace the shit the computer told you by going with the codes. Like lets say you have a po340 knock sensor.......Well replace that then. do you see what im saying here its not rocket science!

[tongva]

not easy...i clear it and then only the crank and nock sensor come back.. dont wanna spend 300 on something that might not even the the part i need

[projectRDM]

i got an s14 with a check engine light..so i hook up my computer to the obd2 and the codes that its givin me is the mass airflow, knock sensor, and crankshaft out of place.:confused:.. drives okay but sometimes it will just cut out for a second.. kinda feels like it could be fuel injecters but ??? does any one know what the problem could be

thnks

Fail.

The CPS is probably broken or missing from a clutch job, check it to see if it's still in place. The knock sensor is due to a number of things, bad gas, fouled plugs, bad cap/rotor, etc.

[blackrms13]

check the 2 plugs at the back of the engine between the valve cover and the fire wall, that fixed 2 of my CEL code

[awesomenick]

check the 2 plugs at the back of the engine between the valve cover and the fire wall, that fixed 2 of my CEL code

Strange suggestion unless you had the same codes.

With OBD2, you can't just fix random shit to make the CEL turn off.

On my S13, the light is always off, as long as the engine is running. :keke:

[blackrms13]

well...mine is OBD1, but i had code 34 and 21? its knock sensor and the CAS those 2 plugs fixed my problem.... so i duno maybe obd2 are different

[projectRDM]

well...mine is OBD1, but i had code 34 and 21? its knock sensor and the CAS those 2 plugs fixed my problem.... so i duno maybe obd2 are different

You got lucky, neither of those items are anywhere near the back of the engine and any plug you messed with would not have affected either of them as well.

In fact the only plug at the back of the head on an OBD-I car is the EGRC-BPT solenoid.

[blackrms13]

http://i158.photobucket.com/albums/t99/blackrms13/DSC09261.jpg
this is one of the plug im talkin about
:-/
i duno

the other plug is at the opposite end of the valve cover

[juice.def]

yea mine was throwing the knock sensor code and i hit it with some octane boost then just got some better gas and it stayed away. I had the maf code to and ended up having to replace that you should be able to find one for a reasonable price on the for sale thread as thats where i got mine..

[projectRDM]

http://i158.photobucket.com/albums/t99/blackrms13/DSC09261.jpg
this is one of the plug im talkin about
:-/
i duno

the other plug is at the opposite end of the valve cover

That's the SCV solenoid.

[kouki_matt]

my knock sensor code is also on i put 91 and it went away for a week but its back on maybe you need to run 91 or better idk let me know when you find out