Last post on Aug 12, 2012 at 6:46 AM
You are in the Lexus RX 300/330/350
What is this discussion about?
Lexus RX 300, Fuel Efficiency (MPG), SUV
#13 of 22 Re: what is a 02 sensor??????????????? [2stuff]
Oct 25, 2006 (8:27 pm)
The O2 sensor monitors emission from your engine and determines whether the optimal amount of oxygen (O2) was used to burn the fuel and makes adjustments as needed. It's not good to have the mixture too lean or too rich.
#14 of 22 Re: what is a 02 sensor??????????????? [2stuff]
Dec 27, 2006 (3:12 pm)
Unfortunately, I am glad to hear about your problem because the same thing has happened to me - RX300 1999 107,000 miles - although you have a newer car. My engine light was on and off 10/05 - driving 12 hr trip, so brought in to non-lexus garage - said needed new o2 sensor - ok. trip for 600+ miles the light went back on - I was furious. Back to garage some 600 miles later and said light still on. He checked - "no codes" - it is nothing. 12/05 back for Oil Change - please check light still on and off(as it was before the multiple 100 $$ repair)- still "no codes" - it is fine. 10/06 car acting a little funny - light still on/off. 11/06 notice of Oil Sludge settlement - bring my car to Lexus - yes it has Oil Sludge (figure that is why light is on) but also told needed a new o2 sensor and a charcoal canister -- about $1,500. Went back to garage re: 1st O2 sensor and said out of warranty - I said I brought it back 2x after installed b/c obviously was not fixed - said out of warranty. Now waiting until Oil Sludge is repaired...did you find out any more infor - would be curious to know if you have Oil Sludge, but should not be on 330 models ...love to hear from you what has happened as I see it was about 2 months ago you posted.
Thanks!!! good luck!!
#16 of 22 Re: Lexus RX 300: Real World MPG [steve_]
Mar 15, 2007 (7:07 pm)
99 RX, 16.1 long term in city; 22 pure interstate at 75mph.
81,000 miles. Reg or premium gas.
#17 of 22 Re: 2002 RX300 [sorter]
Jun 13, 2008 (6:55 am)
Is that on premium,or regular fuel?
#18 of 22 Re: Lexus RX 300: Real World MPG [steve_]
Jul 18, 2009 (12:45 pm)
We recently aquired a 2001 RX300 72,000 miles
We took a short trip today 100 miles each way. Just before we hit the exit ramp on the way back 43.9 MPG Cruise set at 69-70 mph two adults, two teen age campers and 150lbs of camping gear I can't believe it is that great. In town so far 23 - 24 MPG Incredible for an SUV.
#19 of 22 Re: Lexus RX 300: Real World MPG [debsrx300]
Jul 20, 2009 (11:06 am)
That's exceptional fuel economy for an RX. I've feathered the pedal to get 29 MPG on a whole tank a while back, but usually around 20 city/24 highway. Normal low (heavy foot) is about 17.5.
I'd check out actual based on miles travelled / gallons used rather than the computer as a comparison. Just somehting else to compare, my computer actually displays a little less (worse) MPG than actual, but it's usually within 1 MPG. I don't know if you will continue to see close to 40 MPG, but that's a fine goal.
#20 of 22 Re: 2000 RX300 AWD [glenford]
Aug 22, 2009 (8:40 pm)
Any transmission issues with the 2000 RX300??? I heard Lexus fixed the transmission problems that have plagued the 1999 RX 300, BUT I want to hear it from a few Lexus owners that have over 120,000 miles...
#21 of 22 Re: 2000 RX300 AWD [hawktech]
Aug 22, 2009 (8:57 pm)
My good friend (who is not into cars enough to post on a forum) has over 200,000 miles on his 2000 AWD (model year with 50/50 front/rear torque split) with no problems, no hesitation, and the fluid stays pink. He drives it hard (sheesh, I thought I had a lead foot) and commutes in suburban and some urban L.A. traffic. He knows to ask for transmission fluid and filter changes, and rotates them into his service schedule. I don't know if that helps, but it couldn't hurt.
'99 FWD models had a valve body problem that was cured during the model year. Perhaps your '00 AWD, while not a particularly stout design, may be one of the more reliable models. Good luck (but don't skimp on the type IV fluid and filters
Aug 12, 2012 (6:46 am)
I have a 2000 AWD with 250,000 miles on it. We tow a small properly-rated horse trailer, and recently moved the vehicle to the oldest son and bought 2005 model with under a 100k on it for the wife. These are great all around vehicles. The only issue I have on the 2000 model is a small leak in the front seal. Its a $1500 repair, or a quart of oil a month. You can buy alot of oil for $1500 ! I just found a post on improving fuel economy and performed the top four fixes that were recommended. 1) Clean or replace the Mass Air Flow (MAF) sensor located on the top side of the air intake. I cleaned it with brake cleaner and/or carb-choke cleaner as recommended. 2) Clean or replace the Idle Air C? Valve (IACV) located below the twin air intake holes of the intake manifold. Removed the lower hose on the little IACV and sprayed carb/choke cleaner in the small port in the bottom of the right-side hole in the intake manifold. Did this several times until the fluid ran out of the lower tube (the one I removed the hose from) clear. 3) Replaced PCV valve on passenger side of the engine block ($8 at auto parts store) 4) Replaced stock air filter with the K&N high flow filter ($40 at auto parts store). I also added Seafoam $8 at auto parts store) to both the crankcase oil and fuel, per the instructions on the can. I am waiting to see the results, but with 250k on the odometer, every bit will help. My son is off to college so I will drive this during his first year because he can't have a car on campus. The wife's 2005 model is a beast with factory oil cooler for towing and factory towing package. the 3.3 motor is smooth and efficient, registering about 25-29 mpg depending on who is driving. 120k miles on it, so not much to do for a couple years.