Turbo Backfiring

cre · 06-15-2010, 03:25 AM

I'm with MASSIVE boost leak + Push/pop starting a stalled car (or driving with a broken speedo cable and a bad distributor) + Stepping on the throttle while in diagnostic mode (that's your code 51, yes, it's a real code) + ..... well, something else.... <nevermind this bit.... no code 44 according to all the Toyota references I care to dig through at the moment..>.

These could all be old codes and you're just getting freaked out because you're hitting fuel cut and possibly over boosting. What's your AFR when the engine freaks and what is the boost reaching?

An O2 sensor wouldn't cause any of this, the ECU doesn't reference it at high loads.

And no, like Frisbee said, don't replace the knock sensor... see aren't you glad you stopped dicking around?

06-15-2010, 03:25 AM	#16
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	I'm with MASSIVE boost leak + Push/pop starting a stalled car (or driving with a broken speedo cable and a bad distributor) + Stepping on the throttle while in diagnostic mode (that's your code 51, yes, it's a real code) + ..... well, something else.... <nevermind this bit.... no code 44 according to all the Toyota references I care to dig through at the moment..>. These could all be old codes and you're just getting freaked out because you're hitting fuel cut and possibly over boosting. What's your AFR when the engine freaks and what is the boost reaching? An O2 sensor wouldn't cause any of this, the ECU doesn't reference it at high loads. And no, like Frisbee said, don't replace the knock sensor... see aren't you glad you stopped dicking around? __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar ---> Last edited by cre; 06-15-2010 at 03:30 AM.