02 lexus es 300 car bogging up hills
Asked by Guru95ZZWL Dec 28, 2020 at 05:58 PM about the 2002 Lexus ES
Question type: Maintenance & Repair
02 Lexus ES 300 knock sensor code bank 2 came
in car started bogging ! Replaced both knock
senors engine light now reads both knock sensor
codes on ! Car still boogs down up hills . Took it to
2 mechanics they both cant figure it out exhaust
was checked , vacuum leak was checked , car is
getting plenty of fuel even threw tanks soon tanks
of premium gas with injection cleaner 3 times at it
and beat it on the highway !! Still boogs down any
suggestions !! And the knock sensors are working I
was told but both codes pop on right away driving !
4 Answers
Did you replace the knock sensor harness? This is a must. Had to do it on a sienna same 3.0 engine. Also ONLY use Denso knock sensors. Toyotas are sensitive to Denso parts. Other aftermarket parts, ECU will not recognize.
Guru95ZZWL answered 3 years ago
Wiring Harness was replaced and yes the knock sensors are aftermarket but mechanic said they are working was told this issue you mentioned but because of cost I went for the aftermarket plus year of the vehicle took a risk basically ! I was told by a mechanic yesterday that he thinks its a diffrent issue but can't pin point it that's why I asked ! Thank you for your reply !
Yeah when I was looking for these sensors, they were astronomical in price. I ended up finding a user on eBay that had 2 OEM for $30 Yes I got a steal. I was seeing like $125 each on most sites. I did the job myself and changed out the coolant hose in the valley also while in there. It was a mess with leaves and sand. My code for the bank 1 went away for like $65. Good luck but my mind tells me those aftermarket parts are the issue. My research when I did my 02 sienna said absolutely do not buy anything other than Denso. I work on a lot of toyotas and they have a different Ohm pattern in the ECU. Coils and oxygen sensors and A/F sensors have to be Denso.
Make sure there's "No" Water in the Fuel. Sometimes when you buy gas and your getting to the bottom of a tank at the "Station"...water sinks in Gas...also, the filter should be changed if it hasn't been done...just FYI..
