20 Most Recent 1999 Lexus ES 300 - Page 5 Questions & Answers

I had check engine light and TRAC OFF. OBD-II MIL code was P1133 which is Air Fuel Ratio Sensor Response Malfunction and scanned by AutoZone. After disconnecting the battery for 10-15 minutes, the lights went off. I cleaned the gas cap and tightened it firmly. For the last 400 miles, the lights have not come back. When scanning using Snap-on one, no code was detected. I think gas cap was the reason for the lights.

Not the muffler,the hole has to be before theexhaust converter,don't you ask questions or understand what your told?In the future explain that you go to a mechanic& not work on your own vehiclesEvery question on this site is incomplete & appliesthe owner works on every vehicleIf went to a repair shop, why did you not have ALL issuesrepaired once & for all?

Hi, a car that's running rich can also cause this code to set. You might want to check your fuel pressure regulator for a torn diaphragm. The regulator is on top of the engine connected to the fuel rail and looks like the picture below. Pull the vacuum hose off the regulator and plug the hose with a golf tee. Then start the car and watch for any fuel that spits out of the vacuum port of the regulator. This indicates a torn diaphragm. Please let me know if you have questions, and thanks for using Fixya.

Unscrew the gas cap, wait 30 sec and screw it back on making 3 clicks/cracks. Should be ok in a day or two.

If you cnt find it underneath car at back by the fuel tank it's inside the tank

The PO125 is an indication of an engine running too cold-as if the thermostat were stuck open.For some reason it often sets with the PO1135 even when the engine runs at normal temp.A scan tool will indicate exactly how hot the engine is,don't trust the dash gauge. The PO1135 is a heater circuit fault in the bank1 sensor1 air fuel ratio sensor or oxygen sensor. Bank 1 is the REAR bank on this car...that O2 sensor is not much fun.PO500 is a vehicle speed sensor fault-does the speedo work correctly?it is located in the transmission near the back of the case. once again the scan tool will read vehicle speed and can aid in further diagnosis.

If check engine light goes off then there is a trouble code stored. You'll need to retrieve the code w/ a scan tool and follow the proper diagnosis.

New about 4k rebuilt about $2k to $3,600 or a little better, depends on the shop.

check the brake booster if the pedal is really hard and no feel to the brakes check the hose to the booster from the engine try pumping the brakes does this effect the idle of the engine?? it shouldn't

You will know, when a repair shop checks forcodes & component tests the failed system

Hello. I want to know more first, does it only make noise in motion or all the time?

Here's a guide.

remove drain plug under neat the car then flush it with hose till clean water comes out.replace the plug back and add some coolant