Question about 2007 Infiniti FX45 AWD New Cars

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Strange engine shut down

Driving along, just accelerated into traffic. 40 MPH
Notice throttle unresponsive. Engine stuck at 2000 rpm.
After several seconds which seemed like an eternity, engine quits entirely.
Heavy-armed steering and very heavy braking got the car over safely.
Try to restart many times over ten minutes: Same 'exact' cycle: Start, 1000RPM for a second, 500RPM for a second, quit. No roughness; all cylinders felt like they were firing; the motor was simply shut down.
Dealer says its bad fuel, but I doubt it; we only go to one Phillips 66 station. Our other cars are fine.
Thanks in advance!

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  • bbailie Sep 15, 2008

    Hi Fastbozy, or is it Kevin0000?

    You're solution sounds far more plausible. I'll definately give you the thumbs-up. Hope you get a few bucks outta my membership. And thanks for responding so fast!

    They did mention after a second call something about a high-alpha code? I couldn't get to talk with the actual mechanic - only a service writer - and you know how those conversations can be.

    I know just enough about engines to be dangerous, if you know what I mean.

    Would appreciate if you are able to let me know what that code means or if it changes your diagnosis.

    Thank You!!!!!


  • bbailie Sep 15, 2008

    Appreciate fastboyz help!


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I would also doubt bad fuel.
did the dealer scan the car to see if it set any codes?
this is a fly by wire car that means there is no throttle cable. if there were a glitch in the therottle sensor it would shut down the engine after the computer sensed the throttle not responding. but this should have set a code that would have stayed in the memory

Posted on Sep 15, 2008

  • paul erickson
    paul erickson Sep 15, 2008

    yes they did find a code they should have replaced your throttle sensor . the high code made your engine rev up and then shut down. many times a dealer will want to see this happen acouple of times so its not a fluke. its going to happen again and this should be covered under warranty. as it is a part of your emissions warranty that will cover you to 100,000 miles
    yes im fastboyz
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    paul from iowa


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Get the fuel pump checked.seems issue fuel pump.

Posted on Sep 15, 2008

  • Legin Varghese
    Legin Varghese Sep 15, 2008

    also get the spark plug fuel injector checked.


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