I am new to the forum, but should have known about it years ago. My Lexus 2001 RX300 I purchased pre-owned at 73,000 miles (now 156,000) has been
nothing but repeated problems. These four codes I understand are sensors, etc. as I've been reading. However, I fear the transmission is going (again).
I am one of the unfortunate Lexus owners who replaced the tranny at 110,000 miles.
Here's what's wrong right now with the car, whether related to the codes, or entirely different problems. I really, greatly, enormously appreciate your
expert guidance and what parts (Denso whatever) I need to buy. I have a mechanic but he is not Lexus specifically trained. Can he do these fixes?
K - the car's problems:
Engine codes: P0171 System too lean Bank1
P0174 System too lean Bank2
P1130 Undefined code
P1150 Undefined code
Symptoms: While driving about 45 mpg, car started 'pulling' like it was not shifting right. Accelerated to 50 or so, felt like front of car started jumping.
Almost as if the wheels came off the ground (probably didn't, but in a panic, hard to grasp and describe what it was).
Mechanic friend came over, cleared codes. Drove the car next day - about 20-25 miles, the pulling back and forth started and all lights came on again. Cleared codes
and was able to drive to his garage (bout 6 miles). He cleaned a sensor (don't know which one, but on top of engine - plugged in and out). Checked all fluids, etc.
Now it's been only about 10 miles and shifting is wrong again. If I drive with O/D ON, is better. Am afraid to drive and damage tranny or anything more.
I have downloaded the articles from the host regarding these sensors, but is technical. I'm a female and not a mechanic.
How do I know which engine type I have in order to order correct sensors if that is what's needed? Can you tell me exactly what and where to order these from?
The vehicle has never has had a transmission fluid flush or change, differential fluid (change??) .
Lot in this post - I'll post other issues separately. Do you think my transmission is going again??? :( I pray not! Oh, and 'til I get this fixed, I'm without wheels. Pls help :)
Thank you! Kate