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Toyota Avalon, Engine, Sedan
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#144 of 367 hard shaking or idleing
Jul 07, 2005 (11:30 am)
today while driving home from work, my 1999 toyota avalon began suddenly idling hard. it almost felt like it was shaking. and when i would let off the breaks slowly, it became worse. i could even feel it on the highway a little.
i know nothing about cars, and was wondering if anyone had any ideas for me before i go to the mechanic.
last time i experrienced something like this on an older toyota i had it was something like radiator issues? maybe something like that?
anyhow, suggestions anyone?
#145 of 367 Re: hard shaking or idleing [mslat]
Jul 08, 2005 (10:20 pm)
Sounds like the MAF sensor and related componets need cleaned.Search this forum if you need more info on the MAF sensor.
Jul 07, 2005 (3:18 pm)
A question for the members: My 2000 Avalon with 95K miles started showing
the engine yellow light on. Tight the gas cap and light dissapeared. Two weeks later again the problem. Replaced the gas cap and didn't work. Went to a local dealer for a diagnosis. O2 sensors in bank 1 and bank 2 bad. Cost of replacement around $600........including parts and labor.
1) A local auto parts offer what they call "an universal O2 sensor" to replace the one in the front close to the manifold......$62.00.......is this a solution?
2) How bad for the car is continuing running the car with this problem? It will affect the performance in the long run? The car is running perfectly.
3) Is any cheaper way to around this problem and get it fix? I really can't afford such amount of money right now.
#147 of 367 Re: Oxygen sensors [obafunque]
Jul 07, 2005 (4:31 pm)
You can give the aftermarket sensor a try and/or do nothing. However, it may effect the richness of the fuel mixture and if it does, can effect gas milage and/or the catalitic converter. I'd call around to get a few more quotes for the repair to see if there is anywhere that can do it a bit more affordably if you're on a tight budget though.
Jul 08, 2005 (4:17 am)
Had the same issue arise in my 2000 Avalon recently. Have a friend who is a certified Honda mechanic check it out. It also said that the front bank O2 sensor was bad and that the mixture was "lean". He reset the light, and it came back on. I was suspicious as the light came on the day my wife filled the car with the cheapest gas around at a small Mom/Pop Gas station. I ran the tank to empty and refilled with a more trustworthy and higher ocatane gas and had my friend reset the light again. It has not come on since then. It has now been two months. We are back to using regular gas now, but avoid that station as I think it may have had some contaminate in the gasoline.
That being said, My friend tells me that Toyotas O2 sensors do go bad, and it could have just as easily been a bad sensor.
#149 of 367 check engine light now on
Jul 08, 2005 (6:08 am)
after the idling really hard and acting like it was on a delay or something, my check engine light came on. does anyone have any ideas? please help! i am a girl and hate taking cars to the mechanic without having any idea of what could be going on!
Jul 11, 2005 (6:22 pm)
Thanks for the responses. Replaced the O2 sensor located in the front (manifold) with the universal one suggested by local auto part retailer. Clear the codes with the scanner and after few hours light came back again. It may be because I only changed one and the one after the catalytic converter needs to be changed as well? If so, which auto part is reliable to buy it from? Bosch or denso? Any experience with any retailer? I checked one in New Jersey and the price was $135.24 ( shipping free) but no warranty??????? Please, advise.
#151 of 367 Re: Oxygen sensor [obafunque]
Jul 12, 2005 (5:03 am)
WAIT! I just had the exact problem. The first thing to do is go to AutoZone and get their scan tool with which you can obtain the trouble code. You plug it into a socket that has a plastic cover just under your steering wheel on the door side. The code will come back telling you which "BANK" the bad sensor is in. Unfortunately, I can't tell you which Bank is which, you will need to look that up in a very detailed book AutoZone has for the trouble codes, ask them for it. The Avalon has 3 sensors, two near the engine (one at each bank of cylinders) and one underneath the car passenger side. The one that usually goes bad is the one at the engine in the rear side. It is mounted in the exhaust manifold. You changed the easy one in the front, and that is fine, if you have more than 80K miles or so, it needed changing anyway. The one in the rear is a little tougher to reach, it is screwed into the manifold. I got mine out with a crescent wrench. Wear a strong long sleeved shirt or you will scratch up your arms bad getting to it. If it is on too tight when the engine is cold, try running the engine for 2 minutes to warm it up, mine came out easily after this. It is a little tough to get at from the topside, you must snake your arm around stuff, but IT CAN BE DONE. On the connector end, slide the thingy upwards to take it off of the metal mounting tab, PRESS the plastic tab on the side and pull it out. Well, now that you have the sensor out of the car, get yourself a BOSCH universal o2 kit for about $60 (Advanced has them for $70). There is a current $10 rebate for these. Follow the directions. The kit uses the existing connector with a new sensor. I soldered my joined ends and shrink wrapped over the connections, but the little kit they give you for joining the existing connector to the new sensor is fine. If you are really hurting for $, install the one you took out from the front (hopefully you kept the one you took out!) to the rear. If the trouble code indicated the one under the car is the culprit, that one is easy to disconnect from the exhaust pipe, but the connector end is located under the passenger seat somewhere. I have not changed this one yet, but someone suggested that I take up the center console and look under the carpet at the hump and the connector is in that area. GOOD LUCK.
#152 of 367 Engine light on/instrument cluster dead
Jul 18, 2005 (8:55 am)
My wife recently bought a 2000 toyota avalon xls. Last week, the engine light came on and the instrument panel went "dead". All the gauges and the center display stopped working. For a couple of days, it would work off and on. Now, it seems to be not working at all and the engine is running very rough. I checked the code for the engine light and it was P0500-vehicle speed sensor malfuntion-Can anyone tell me where this sensor is located and if it would cause the problems with the instrument panel. We have parked the car until we can figure out what's going on. Also, this car seems to run extremely hot in general. Is that normal? The temp gauge never seems to indicate any problem but I'm always amazed at just how hot the engine is even after a short drive.
#153 of 367 Engine running hot
Jul 18, 2005 (9:34 am)
I have a 2000 Avalon which has been running hot lately. The gauge was at about 3/4 spiking up to halfway to the red so I took it in to the dealer who checked and found nothing wrong. Yesterday we went some place driving about 70, a few small hills, mostly level highway, outside temp about 98, and the gauge ran a fraction of an inch below the red. The dealer said don't worry if its not in the red. I'm worried the car will conk somewhere on the road. Anyone else have this problem?