well, replacing the fuel filter did not solve the problem. a day or two later, after i shut off the air, kaput. bob, just a note, but my car does this just in 'around town' driving. in other words, i'm not moving at high speeds on any freeways, just stop and go traffic. on occasion, if i run the air and then turn it off, this happens. not every time, but even once in a week or two is a problem that i do not want to have. how do i find one of these 'reflashed' ecus? might be worth a shot. or, rather, how do i figure out what # part i need? can someone point me to where i read up on service bulletins by lexus? my car did not start doing this until summer ... so the ageing process makes sense.
uote=95LS400Bob,Nov 6 2005, 12:10 AM]
It's an ECU problem.
Throttle bodys that are dirty don't wait for 30 min or more of highway driving before showing a problem....nor do they fix themselves as soon as the car restarts.
Probably the best question is the "why" the ECU starts doing this. It certainly didn't do it when it was new. It has to be an aging process...maybe something to do with the circuit board itself...from the many hot and cold cycles it has done over it's lifetime.
And this could very well be why many of these same cars get the "P0" check engine lights after a cruise.
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