99 GS300 Check engine light no codes
12-03-23, 03:26 PM
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99 GS300 Check engine light no codes
Hey guys! new owner of a gs300 here.
1999 GS300 @ 185,000kms
Since buying my gs300 it has ran fine but I've ran into an issue after about 15 minutes of driving the throttle starts to engage later and later after the pedal is pushed and then dumps into limp mode and will refuse to show codes?? if i turn off the car for a couple minutes it will be fine again for 5 to 10 minutes and that leads me to believe it could be an issue with heat??
I've taken it to a mechanic and an auto electrician and none of us can figure out what seems to be the issue. my auto electrician has ruled out any ECU problems but we did find a sketchy accelerator position sensor that was corroded that we've replaced with no fix to the issue.
if anyone has any ideas on what would be the next step to figuring this out I would greatly appreciate it!
Cheers!
1999 GS300 @ 185,000kms
Since buying my gs300 it has ran fine but I've ran into an issue after about 15 minutes of driving the throttle starts to engage later and later after the pedal is pushed and then dumps into limp mode and will refuse to show codes?? if i turn off the car for a couple minutes it will be fine again for 5 to 10 minutes and that leads me to believe it could be an issue with heat??
I've taken it to a mechanic and an auto electrician and none of us can figure out what seems to be the issue. my auto electrician has ruled out any ECU problems but we did find a sketchy accelerator position sensor that was corroded that we've replaced with no fix to the issue.
if anyone has any ideas on what would be the next step to figuring this out I would greatly appreciate it!
Cheers!
12-04-23, 01:07 AM
#2
https://www.clublexus.com/forums/gs-...l#post11624375
Additionally, your diagnostic scanner was unable to communicate properly with this ECU. When the Check Engine light is ON, there is a stored code and freeze frame data in the ECU's memory. Try to find someone who has a Toyota TechStream diagnostic scan tool.
Additionally, your diagnostic scanner was unable to communicate properly with this ECU. When the Check Engine light is ON, there is a stored code and freeze frame data in the ECU's memory. Try to find someone who has a Toyota TechStream diagnostic scan tool.
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Art8405
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04-03-23 02:59 PM
