Question about 1995 Lexus ES 300
Maybe you could know, on the Lexus ES300 1995, applied vacuum to dashpot, stop lever screw adjusted to no clearance, should I turn it a little bit more? Throttle valve is stick at the beginning, I must push it a little bit harder. But only at the beginning. Is this OK? Is it for the idle?
I was seeking for the solution, my lex is shaking my hands on the steering wheel, when fully warmed up and idling. Too low RPM?
Foto with showing where the idle is
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Posted on Jan 02, 2017
The first thing I would do is remove the hose connected to the intake and see if there isa lot of blackish brown buildup on the plate, if there is you need to buy some top engine cleaner and with a tooth brush clean the throttle plate on the back side and also the pipe that it sits in. Over time Gum builds up from back fires that you can't feel and causes the plate to open up and gradually will cause this problem.
Check this first and if you find that it is dirty then let me know and I will tell you how to do a top engine clean to get it running better, I do this in a order that won't cost you as much. If there is build up in the engine it will also cause the engine not to get good fuel mileage. Check this first and let me know so I can help you save money, you can do the top engine clean yourself. As far as sensors go I do the simplest things first before moving on to the sensors.
Posted on Sep 01, 2009
Look for a small electric motor near the accelerator cable and near the top of the valve cover.
It's call IDLE AIR CONTROL (IAC) motor.
It's job is to increase the idle when load is added.
Example: turning on headlight,turning on AC.
Testing it is simple.
Warm up you car for 10 minutes.
Locate the IAC motor
turn on loads.....AC,headlights,etc
The motor should move the idle up
If the motor does not increase the RPM then it can be stick.
Try to give it few gentle taps to free up the gears.
It can be clean if your are up to it.
This electrical motor is very expensive. Please handle it with care.
The other trouble spot are
old accelerator cable
TPS Throttle position sensor
I will do a simple tune up and gas treatment before starting to replace any parts.
Please post reply on the comment window.
Posted on Oct 27, 2009
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