alex91n/a

iTrader: (2)

i have an rtek 2.1 on my 91 rx7, i deleted the omp but i have a cel code 20.. is there a part of the OMP harness im supposed too ground out or something.

turbo2ltr

iTrader: (1)

just ignore it.

alex91n/a

iTrader: (2)

hmmm, thats what i was doing but my car is really having a hesitation problem and im trying to
eliminate limp mode as a possibility, and its just a concern because other people have said they deleted their OMP and they do NOT have the CEL 20

turbo2ltr

iTrader: (1)

If it was in limp mode, you would know it.

Whether the code is there or not is really by chance. I think I recently discussed this so you might want to look back a few threads.. Limp mode without an Rtek is typically caused by a damaged OMP driver in the ECU. Depending on how the thing blows, it can cause some weird stuff in regards to how the ECU senses codes.

alex91n/a

iTrader: (2)

ya ive had limp mode before but it was always while driving..

now im working on a new engine, and the car isn't quite drivable fully, and im new to the rtek which is why i was looking for clarity on the CEL 20 thing.

what are the symptoms of limp mode while in neutral?

Pete_89T2

iTrader: (4)

Code 20 is for the MOP position sensor, assuming you have an S5; not sure what code 20 is on an S4. You won't notice limp mode in neutral - revving the engine in neutral will seem perfectly normal, since it's not under any real load.

When in limp mode when driving in gear, the engine will buck/hesitate very noticeably if it's under load and you try to accelerate with normal throttle. If you feather-foot it, you might be able to SLOWLY accelerate without it bucking.