Last post on May 16, 2011 at 1:13 PM
You are in the Toyota Avalon
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Toyota Avalon, Transmission, Sedan
#46 of 104 Re: 1997 Toyota Avalon Hesitation [user1957]
Feb 26, 2006 (7:47 am)
Does the CEL illuminate when you first start the car (to indicate the bulb is OK)?
FWIW: There's a lot of interesting information on http://www.autoshop101.com although it might be a bit dated, i think the fundamentals of fuel injection scheduled by an ECU aren't drastically different in your car.
Look under Technical Articles.
If an engine control module were mainly there to provide fine control of scheduling fuel/air, thus the fuel injectors to admit fuel consistent with air flow and engine speed (i think there are optimum values the ECU tries to hit measuring many sensors and adjusting injector on/off duty cycles to adjust fuel flow rate and timing), then I think it is also true these modules are programmed to play additional tricks when the vehicle is first starting and also when running with the engine at sub-optimal temperature.
Being a complete novice at this stuff (i'm interested in reading more and learning more so again, take it for what it's worth), maybe the coolant temp sensor read by the ECU to tweak the schedule mainly formed by throttle, airflow, engine speed is at fault.
You say when the engine warms up, you are fine. So I'm thinking, I'd perhaps look at the coolant sensor. If this part isn't too much, or if you can get one from a pull-it place and find it to remove and replace it, I'd give it a shot next.
#47 of 104 Re: 1997 Toyota Avalon Hesitation [user777]
Mar 06, 2006 (5:12 am)
I think so but will chk. i have a 96.
#48 of 104 01 XLS Transmission Replacement at 60K?
Jun 14, 2006 (1:22 pm)
The "check engine" light has been appearing in our '01 XLS for about 5000 miles. Upon calling the dealer, they said it was probably a loose gas cap. So for the last little while, the light would appear and then disappear. Upon taking car for 60K maintenance (we've never missed a recommended maintenance event) we asked that the "check engine" light be investigated. (Sure for about $83!). Indicated transmission problem. Tried swapping out the solenoid vale assembly - didn't fix it. Now, with 60,490 miles on the car we're faced with a $3300 transmission repair bill (dealer is "good-willing" the repair - we only have to pay 20%). Bottom line - in all the years of driving "lower quality" cars we've never had to replace a transmisstion. I find it incredible to have to make this repair on a perceived "high quality" Toyota Avalon.
#49 of 104 Re: 01 XLS Transmission Replacement at 60K? [gmess]
Jun 14, 2006 (2:18 pm)
Assuming you are not experiencing any mechanical difficulty (for 5,000 miles??) why do you think the check engine light isn't totally meaningless..??
A faulty wire connection someplace.
What were the fault codes??
#50 of 104 Avalon XLS 2003 - Overdrive switch
Jul 26, 2006 (8:39 am)
Off late I have been noticing that the "Over Drive Off" turns on by itself. Can this happen automatically? As you know New Jersey roads are bumpy and I am not able to validate whether this happens only when I go over a rough patch of road.
Other than affecting fuel consumption what other damage this could cause?
#51 of 104 Re: Transmission Problems already? 01 Avalon with 93K [coester]
Jan 30, 2007 (11:21 am)
I bought a 2000 Avalon XLS which I purchased at 60,009. After driving 615 miles, my check engine light (CEL)came on...no codes stored...but for some reason dealership check code #0773. It was not my gas cap!! Drove the car 1,948 miles, CEL came on with code #0773. Dealership replaced the transmission under my extra care warranty. Drove the car 15,908, CEL comes back on with code #0773..dealership replaced vehicle speed sensor. Now at 89,000 CEL is back on with code #0773 and code #0171 (air flow sensor). Extra care warranty is expired and now they want to replace
Engine Control Module at the cost of $1283 (pts/labor) and the air flow sensor at $251 (pts/labor)..plus its time for a transmission flushing for$169.95 for a total cost of $1705.95. After reading all the postings on the AT in Avalons, I wonder if cars owners could start a campaign to get Toyota to recall whatever is causing so many people to experience transmssion problems so early in the life of avalons or any other toyota products. Toyota boast such reliable cars. :lemons??:
#52 of 104 Re: Transmission Problems already? 01 Avalon with 93K [figmos7]
Jan 30, 2007 (4:21 pm)
Just so you know here are the definitions of your check engine codes.
P0773 Generic Shift Solenoid E Electrical
P0171 Generic System Too Lean (Bank 1)
Perhaps its time to talk to your dealer. There are many things that can case a System Too Lean. I'd look towards the O2 sensors or mass airflow sensor.
Hope that helps,
PS - Here is a link to a code look up data base just select Toyota and enter P before your codes p0171, etc.
#53 of 104 2000 XL Tranny Question
Mar 06, 2007 (2:27 pm)
Original owner, 116K miles, AT fluid changed each 30K. Recently noticed a minor reddish leak under the engine and the dealer checked it and said the front transmission pump seal was leaking. Cost would be about $900 to replace that seal the the rear main one. I'm inclined to just use some Valvoline ATF Sealant and ride it out. Anyone else have this issue? Also, where's the AT fluid fill located at?
#54 of 104 Re: 2000 XL Tranny Question [dave128]
Mar 16, 2007 (7:30 am)
Take it to someone else. Overpriced. Way overpriced. Yes, the power steering uses same TypeIII fluid as the tranny in our model. Fluid resevoir on the passenger side of the engine bay nearer to the R wheel well. Black colored cap, easy to access. After repairs are made, changing the tranny fluid and the PS fluid(relatively easy to do) at the same time is a good idea in this car.
#55 of 104 2003 Avalon XLS Check Engine Light after Transmission Fluid Change
Mar 18, 2007 (5:14 am)
(1) At 63,000 miles I changed the transmission filter and fluid. Unfortunately, the check engine light and VSC lights came on with an error code of P2735, Pressure control solenoid Electrical (if I remember correctly). Toyota Dealer couldn't find anything wrong just using the scanner. Would have to charge to drop transmission pan to view - be prepared to replace a valve at a cost of $166 + 2 hours labor. Car runs great; no burning smell in fluid; proper fluid levels.
(2) One neighbor, a former Toyota mechanic, recommended I buy the service manuals since I plan to keep my car for 200,000+ miles. Should have asked which one(s). Recommendations?