CEL Obd1 dme turbo tune - 1226

[e30kid89]

Fixed :)

[GT35Rm3]

This may be a dumb question, but is there a chance that it could be knocking?

[milKt]

Don't our engines tend to send knock CELs when they are allowed to move too much (tapping against mount brackets and such?)

How are your mounts/brackets?

[GG///M3]

Don't our engines tend to send knock CELs when they are allowed to move too much (tapping against mount brackets and such?)

How are your mounts/brackets?

Yes

[cragg56]

sub'd

[BadBoostedBmwM3]

Now, you are scaring me OP.

I was having the same problem, so I changed the knock sensors. But, I've been unable to drive the car, yet.
I hope the light does not continue like in your case because I've already thrown them away and the trash man has already picked it up.

[milKt]

Yeah,
those old crumbly hobo, knock sensors may work wonderfully :)

they're just ugly as Fran.

[GG///M3]

Yeah,
those old crumbly hobo, knock sensors may work wonderfully :)

they're just ugly as Fran.

Don't anger Fran

http://i92.photobucket.com/albums/l12/KargTheVile/KingPinTwatlick2-C-RSb.gif

[e30kid89]

gt35rm3, I think with our cars if it IS knocking it doesn't throw a code but just pull the timing as necessary..(was like this on my obd2 m44 lol) it shouldn't anyway i'm running 94 octane

As far as mounts/brackets i did break the driver's side arm back in november but was replaced and no problems since then till now... :mad

Only werid/silly things i can think of is i used a slightly shorter length bolt to install the rear knock sensor (cause i never had the original one and it's a bit easier to install) and I don't have the main harness bracket on my harness down there so everything is just kinda ziptied...

I found a vid of somebody who who was getting the same code during driving, the closest comparison i could find of the cel flashing is like this:

http://youtu.be/HfUAf4o7jWc

I also have the obd2 knock sensors laying around at home, i remember some guys trying to spilce and use them vs the obd1 sensors which are more problematic but i rather not at this point. going to maybe try re-torque that rear sensor and seeing what happens/if it makes any changes.

So here's what i've done/tried doing so far today...

- checked that the sensor wasn't touching anything
- installed the proper length (according to realoem) m8x30 bolt
- ran car with #2 knock sensor disconnected to see if it makes a difference
- cut up my spare obd2 knock sensor up, spliced a obd1 plug on and swapped in
- added dielectic grease to the knock sensor plug/pins
- re-installed the new knock sensor then unplugged battery for 30mins
- went to friends shop to confirm the code was the knock sensor with a snap-on scan tool...cleared it but as soon as i rev up to over 3k @ idle the code comes back right away :(

Though i don't want to think it i'm starting to think it is a electrical/dme/chip issue...I have a base tune chip i can try i'll see if it does anything...

after all of this the light is staying on more often now, sometimes coming off for a few seconds then back on.

really running out of ideas though anything helps!

thanks!