check engine light?"

[e30loverSC]

Ok, im confused apparently our cars have 2 check engine lights? ONly one of mine lights up. Its the one at the bottom that says check engine. Is the other one supposed to light up? ive never even seen it light up?

[FREE30]

Download the code and see what it gives u. There is a diagnostic port. From there you can troubleshoot...

[e30loverSC]

where is the diagnostic port? And Whats the light in the center of the cluster? Is mine supposed to work?

[Aptyp]

u need to tell us, what you're working with, obviously not m3...

[e30loverSC]

87 325is. My friends car has a light that just says Check right in the middle light up. Mine never comes on. But the one at the very bottom on the left side that says Check engine comes on sometimes

[JasonC]

The check in the middle of the cluster is for you to check the overhead check panel. it wants you to look at it and press the check button cause one or more of the lights are on.

[e30loverSC]

ok so i have that figured out. now which light is supposed to blink when i do the stomp test?

[MattM]

yup, early models did not have a check engine light. the 'check' or trangle hazard light in the center is not the check engine light like many think

im retrofitting one to my 24V swapped car in this post:

http://r3vlimited.com/board/showthread.php?t=158715

[e30loverSC]

so will the stomo test work for my 87 325is

[JasonC]

I'm pretty sure you can't do the stomp test to an 87.

[e30loverSC]

damnit. well how do i get the code?

[MattM]

does the 'check engine' light light up when you put the key to run? if so then yes, if no, then either you dont have a check engine light, in which case the stomp test will never work, or the bulb is dead, which is a 50 cent repair

[e30loverSC]

the engine light does light up. Im tryin to retrieve the last fault code.

[e30loverSC]

ok i just tried it a few times. and got 1221

[kikkoman]

Looks like 02 sensor: http://www.unofficialbmw.com/repair_faqs/motronic.html