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The mkiv Supra Owners Club

check engine light on Rev limiter?


randy

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Originally posted by randy

My check engine light comes on for a sec when I hit the rev limiter is this OK? I am using a ignition cut rev limiter set at 6900 RPM. Could the ignition cut signal cause the check engine light to come on?

:conf:

 

Disconnect it/turn it off and see if the problem goes away ;)

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I fixed the problem!!:) I noticed that I have not been able to hold boost when flooring it from 4500 RPM to 6800 the turbo just wont come on line and I loose boost completely. Checked the turbo pressure vac hoses and used ring clips to secure them then checked the blow off valve adjustment screw and found it was too lose and was leaking boost which I guess was causing incorrect reading of the RPM/boost. So the check engine light came on.

If you are using an aftermarket Blow off valve check the adjustment of your blow off valve and see if it is leaking boost at high RPM's. :)

One more thing - The car revs to Red line much faster with no boost leak.:thumbs:

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