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Engine failures in MR2 Spyders

6/11/2014 - Updated the original post by entering direct links to reference material, and added remarks about the legal issues involved with...

Wednesday, October 16, 2013

Design News publishes my article

Just want to extend my heartfelt appreciation to Rob Spiegel and Design News for publishing my article about the pre-cat problem in MR2 Spyders. The "Made by Monkeys" section is SO appropriately titled for stories about Recall King Toyota.

I'm honored - sure makes my day :-)

Update 10/16/2013 -
Interesting comment by tekochip: 
"Another example of complex systems failing in complex ways. As the pre-catalyst fails you would think that the exhaust gas pressure would keep all the containments from flowing back into the engine, but the MR2 engine features variable valve timing. Under some conditions the valves change their timing to allow a little exhaust gas back into the cylinders, sort of a vale timing version of EGR. So, with the variable valve timing sucking in exhaust and the pre-catalyst failing, the result is containments scoring the cylinder walls and valves."
Rob Spiegel chimed in, confirming that the pre-cat problem is all over the Internet:  
"This seems to be a widespread problem with this model. A quick Google search found TONS AND TONS (emphasis mine) of references to pre-cat problems."
Absolute disgrace that government allows corporations like Toyota to kick consumers around with such impunity.

Update 10/19/2013 - I'm delighted to see comments focusing on pre-cat environmental considerations and the EPA. Instead of coddling Toyota with wrist-slappin' fines, and allowing them to cut deals whereby Toyota makes no admission of wrongdoing, government should have reigned the Recall King in long ago on the pre-cat issue.