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Lexus RX300 Questions

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462
questions

What should be the reading of O2S B1S2?
The readings I get, at idle, temperature 190*, vary from 0.000 to 0.010 to 0.770.

The car while driving sets P0125 code first then later will set P0172. While the car is sitting still, at idle it only trips the P0172. However, leaving idle for another 5 to 10 minutes it starts setting the misfire codes (P0300, etc).

I had a check engine light come on over a month ago. My scanner said it was a P0171 $10 generic code, bank 1. So I changed the air fuel ratio sensor. The code cleared, then I had a pending code for, I think P1153 incorrect signal pulses to ECU on bank 2, so I changed the bank 2 air fuel ratio sensor. The codes reset for about a week then bingo I now have P0171 $10generic, back again. I removed the MAF and cleaned it with MAF cleaner. It is the original MAF sensor. The vehicle has 137,000 miles on it. I am retired and really do not drive it much. I bought it 6 years ago and only put 20,000 miles on it. I do change oil and filter every 4 months. The air filter I just changed. I did notice that a hose just above the filter and before the MAF sensor was off. It must have been off for since my last air filter change, which was about a year ago. I did check the intake manifold and valve body area with carburetor cleaner and I did not see any change in my idle. The idle is a little rough and you can smell a rich exhaust gas. I did check a lot of the small vacuum lines and they look okay, nothing brittle with good connections. Not sure where to go from here.
I read several articles on this subject. I am seriously considering getting some injector cleaner and adding it to my fuel, also I was going to get some fuel conditioner. The next step it to have the fuel pressure checked.
Any help would be appreciated.

Because the oil did not register I added extra oil. What are the ramifications

Squeaking from front of car under hood. I hear it mostly when the car is cold. Could it be the timing belt? Had it changed at 95k.

Mechanic says both valve cover gaskets need to be replaced. He showed me, and it did seem like both were oozing. Quite a bit of oil on my garage floor. Coincidence?

Is this a fair price. I have not been experiencing any problems. He said should do before there is a problem?

When I fill my tan, my gas gauge only shows 1/3 full. This is a new thing after 200,000 miles.

My 2001 Lexus RX300 makes this beeping sound that seems to be coming from around steering wheel area. Every time the beeping sound comes on my cruise control no longer works and I have to press the gas petal (vs. cruising obviously) my steering wheel also feels like I have less control. I was told there was a recall on the Toyota ignition. Could this be the problem on my car?

Floor, and not responding when brake is applied. Took to break masters and was told it may be electrical issue and have something to do with abs?? But can't pin point and sending me to dealership?? Any ideas??

Started hearing loud noise from rear, growling/humming/?? Sound and vibration that stays constant but will level off once cruising at a set speed, and get louder if and when accelerateing. How can I determine if its hubs/bearing issue or bad tire issue, as I've read that both of these issues can sound similar. Can the average Joe do this at home, or does this need to be done in shop setting with a certified mechanic.









Is at the correct level. is there a fairly easy way to rule out possible issues and find the problem for the average car owner. Or does this need to be done in shop setting by cert mechanic?

It is still misfire ing. Check engine light. Comes on and goes off repeats

code is lean on bank two

about a month ago, i noticed at certain times when i accelerate from a complete stop that a loud groaning noise occurs. Sounds like it's on the right side. Has new brake pads and rotors so it's not that. My husband drove it around and doesnt do it for him. It does it at random. At first i thought it was the slick old tires, but it did it today twice after i just put on new tires. It only happens when you accelerate.

got code po171,lean and p1130, bank 1 sensor 1

I have 1 ohm across heater circuit when unplugged

My car doesn't go over 40 mph. It feels like it is really bogged down. It drains gas a lot quicker than it should (it took me a whole tank to drive 200 miles)

if I unplug the vacuum hose it runs by itself.

The weather was cool I turn air condition to hot, after turning back to max cool the air condition does not cool again

Just had work performed on my car last week.
1. FRONT PASS WINDOW IS IN-OP - CHK AND ADVISE (found voltage at
window going up, not down
2. LUBE OIL AND FILTER CHANGE, CHECK ALL
FLUID LEVELS, CHECK AND ADJUST AS REQUIRED
ALL TIRE PRESSURES.
3. TIRE ROTATION
4. PERFORM COMPLIMENTARY BATTERY TEST
5. PERFORM VEHICLE INSPECTION
7. REPLACE VALVE COVER GASKET 6 CYL
8. REPLACE SPARK PLUGS AND SEALS PER DIAGNOSTICS
9. REPLACE AIR FILTER
10. PERFORM BG BRAKE FLUID SERVICE

car has 209,000. Never had this problem before

has no thumping sounds it runs just fine till i go over 60