crank postion sensors..LOTS of them

[sh0rtlife]

07 canadian 5dr with just over 100,000 Miles...it ate its factory installed sensor, and EVERY sensor, i reset the obd and a week later it tripped again

so knowing it was bad i replaced it...ive replaced about 15 of them at this point..with various brands including known good used OE factory toyota units

they work just fine throw no codes untill a "high rev moment" after that they pop up as failed within the next 100 miles or next ignition cycle whichever comes first....drive like granny and they seem to last untill you dont..since the original died..ive not gotten more than 1000 miles out of any of them..the average is around 300-500....blew 2 within 10 miles just did a couple high rev foot to the floor freeway on ramps and they failed..so RPM is a clear cause to rapid fail

at this point im stumped..why would the car be killing them?
is it an electrical malfunction?
something wrong with the crank itself?
bad ground?

the connections are clean and show no signs of issues....the plug still snaps in as tight as it ever has and isnt brittle

fact is im no longer sold the units are failing i think it may be the car.....and yes ive re-tested the OE unit that failed..and it will work just fine till a high rpm pull..im just not sure how to diagnose the "why"

[remcafee]

you have demonstrated that it is not the crank position sensor LOL, it could be a wiring issue or ecu issue, lemme look further into it

[remcafee]

what are the dtcs? p0355?

[sh0rtlife]

Originally Posted by remcafee

what are the dtcs? p0355?

honesly ive not noted the code number aside from it specifically stating crank position sensor error

i know its in the system currently tho as i cleared it went for a rive and it came back within mins...."sometimes" i can get away with a reboot and be fine for a few days

what gets me tho is everything points to an RPM event failing them...so im almost wondering if theres an "over-volt" at higher rpms..maybe the alt is putting out to much in a specific spot?

ZERO other issues, not even in the cars history...save for the more recent airbag issue, which i fixed today..it was the snail behind the steeringwheel

wifes owned it since new soo i know the cars history very well

188888Kilometers as of earlier today

aside from the spark plugs, brakes, belt, tires, battery(lasted 100k too) and adding AC nothings been changed on the car...and the crank pot blew before i did the AC so can rule that out

i hate the thought of cutting into the wiring to "try" and find something, but yeah them crank pots are good eatin NOM NOM NOM

[remcafee]

you might have one of those oddball tsb cars with a bad ecu, i found a service bulletin about some yarises from 2007 have a faulty ecu, do you mind sharing your vin so i can verify?