1luckyjohn

I have had continuing problem with my 1998 gs300 lexus . Seems to happen when i slow down or am in stop start traffic .Vsc and engine lights come on and throttle response reduces to about the last 25% of travel. When this first happened the car returned to normal when the ignition was swithed off and turned on again, but after doing this in response to the problem maybe 6 or so times ,switching off the ignition and turning on again did not reset the throttle and turn off the warning lights. So we plugged in the computer code reader and it came up code for TPS so we bought a new TPS from Lexus and fitted it and had no problems for a 1000 miles or so, but now its back doing the same thing and i can almost pick when its going to do it which is when i slow down and or change direction .Now when it does it and we check for codes there are none and it always resets and carries on fine by just tuning off ignition and switching it straight back on again.PLEASEEEEE has anyone got to the bottom of this pproblem and worked out why it is happening. I know that when it occurs the electronic butterfly in throttle body is not responding and so only the cable operated portion is left to give you acceleration. You can mimic the problem by disconecting the plug on the electronic butterfly.HELPPPPP.