Stay tuned - Toyota Yaris Forums

Bluevitz-rs · 03-25-2010, 02:26 PM

We had the exact same problem with a '89 Honda CRX at Mosport International Raceway in turn 5B. Only it didn't set the check engine light. It would just misfire for a second or two. And it only occurred if we had less than 1/2 tank of gas. We later had problems with oil pressure in the same corner but that set a code and VTEC shut off.

Edit:
It is possible that the ECU is going into fail safe to try and save your non existent cat because of the misfire. The CEL is flashing to warn you of imminent damage to the cat due to the misfire. I've had this happen with my Echo on the track, but I don't have TBW, so it possible the ECU is cutting back the throttle.

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03-25-2010, 02:26 PM	#11
Bluevitz-rs 1NZ-6spd View User's Garage Drives: '05 6-Spd Vitz RS Join Date: Oct 2008 Location: Oshawa, Ontario, Canada Posts: 2,967	We had the exact same problem with a '89 Honda CRX at Mosport International Raceway in turn 5B. Only it didn't set the check engine light. It would just misfire for a second or two. And it only occurred if we had less than 1/2 tank of gas. We later had problems with oil pressure in the same corner but that set a code and VTEC shut off. Edit: It is possible that the ECU is going into fail safe to try and save your non existent cat because of the misfire. The CEL is flashing to warn you of imminent damage to the cat due to the misfire. I've had this happen with my Echo on the track, but I don't have TBW, so it possible the ECU is cutting back the throttle.