Stomp Test Doesn't Work

[ClayW]

I tried the stomp test and nothing happened. Any ideas other than testing the TPS?

[oldmann]

Does the CK engine light come on when you turn the key on?

If not the bulb may be burnt out, or removed.

TPS not reading fully closed throtlle.

Start there, these things working, you may have an issue with the DME.

Good luck

[ClayW]

Does the CK engine light come on when you turn the key on?

If not the bulb may be burnt out, or removed.

TPS not reading fully closed throtlle.

Start there, these things working, you may have an issue with the DME.

Good luck

Yes, the Check Engine light comes on with the key, then goes off when the engine fires.

I will check the range of the TPS and report back.

[jdirty]

Did you ever find out what was causing this?
I'm having the same issue even after replacing the TPS.

[Northern]

Do you have a 173 or equivalent DME?

A '91 should, but who's to say it wasn't swapped out at some point

[jdirty]

I don't know what my ecu number is but it's a stock e30 m42.
It was working couple months back because it threw an 02 code which I resolved.
It's just that now.. I'm trying to figure out this random hesitation while driving and idling issue and the cel is just on and I can't pull codes.

[jeffnhiscars]

I had the same issue on the 87 325i 4dr..it wasnt reading WOT at all so couldnt pull codes. Not only did the new TPS solve that but apparently it wasnt reading idle very well either.

Both problems solved..and drill a 1/8 hole in the plastic cover just above the "S" in Bosch.

[jdirty]

I actually found my issue. the throttle position sensor harness wires (m42) were fraying and ended up being cut. Found out when i peeled the boot back then the no DC multimeter test made sense. I now have a working stomp test but because of my lazy splice i'm getting a cel 1216 (TPS sensor though mine is new)