HI Rolla Club
I have a 1994 Toyota Levin GT Apex, 4AGE Slivertop which we have just converted into a Youth Saloon for racing Speedway in NZ.
The mistake we made while removing the wiring loom was we run the engine and if we cut a wire that stopped the engine we would join it mark it and carry on, not giving "Limp mode" any consideration!!
While tunning the engine I noticed it retards the timming about 7 degrees, the engine is also running rich.
Over the past few weeks I have studied and tried to fix the issue, I did find a very helpful web site which involved a 4AGE Jet boat conversion.
Here's a list of things I have already checked
* The TPS, AFM, O2, and Knock sensors are all wired correctly back to the ECU
* Taken the above sensors out of our spare car and tried them in the speedway car
* Tried another ECU
* Tried simulating the issue in our spare car by disconnecting sensors
Its got to be simple I have missed.
Does anyone know the causes of "Limp mode" in a 4AGE 20v engine