Author Topic: 92 318is check engine light code reader (Read 4404 times)

92BMW318is · « **on:** November 01, 2010, 03:23:04 PM »

Ive tryed the stomp test numerous times, doesnt work....
where can i get a code reader for cheap that will work in my car.

The stomp test i turn the key until all the lights on the dash flash, then press the gas pedal 5 times within 5 seconds, and i continue doing this for like 5 minutes, then take out the key and repeat the process. ha i dont think im doing it wrong from what i read.

DesktopDave · « **Reply #1 on:** November 01, 2010, 05:30:28 PM »

If the CEL isn't burned out, it should work. Takes me a while to get it right, even now...

I think I just put the key in position 2 & keep stomping until it starts flashing.

92BMW318is · « **Reply #2 on:** November 02, 2010, 09:20:49 AM »

do you know if it needs to be the, original engine key.
i have the spare key, the original broke...

the original had groves going down the middle.
they both work but their diffrent like the spare doesnt open the trunk

i didnt know if it matters
EDIT:

also should i press gass pedel every second. within 5 seconds. or just. 5 times within 5 seconds

MLM · « **Reply #3 on:** November 03, 2010, 05:48:43 PM »

You may not have a check light... odd as it sounds i have a 92 318is which did not have a check light or a few other features like a o2 sensor, this had been blanked off from factory.

All these things missing is making wiring in a new engine management system easier tho.

92BMW318is · « **Reply #4 on:** November 04, 2010, 12:16:50 AM »

i have a check engine light and its illuminated,
tryed for hours yesterday to get the codes to read out.
but nothing happened.

i did the stomp test aleast 200 times. read other forms to see if there was a trick to getting it to work..
did all of that but still nothing.

DesktopDave · « **Reply #5 on:** November 04, 2010, 08:53:14 AM »

I found this, not sure it'll help: http://m3forum.net/m3forum/showthread.php?t=295454

Are you sure your TPS is in spec & working? If it doesn't tell the DME to flash it'll never work.

92BMW318is · « **Reply #6 on:** November 08, 2010, 04:50:10 PM »

I'm sorry Dave but what is a TPS?
where is that located?

Thanks man, for all the help

DesktopDave · « **Reply #7 on:** November 08, 2010, 05:50:49 PM »

Throttle position sensor, look for the wiring plug going to a sensor on the side of the throttle body. Get a multimeter and test it out. BMW wants it to be 0.6VDC idle and 4.2v wide open. Not sure how I'd test it with the power on though. Here's another test. At 70degF, the resistance should be 3-5 K-ohms at idle and about 1 K-ohm at wide open throttle.

Strangely, BMW requires that the DME be unplugged for at least ten seconds if you replace the TPS. Not sure why, I'd expect the computer "learns" the new part.

It's adjustable too, loosen the two screws slightly and twist it to get the wide-open-throttle setting just right.

If you don't know how to use a multi-meter well, I'd highly recommend learning. It'll save you a lot of time & money fixing old BMWs. I don't mean to brag, but I bought an e30 318i that wasn't running. That made for a heck of a deal...after we agreed on a price I had it towed to my house & fixed it with a multi-meter and a paper shop towel.