97LexBow

Does it matter whether you use Drive or overdrive on daily driving. Whats the purpose of each..Which one am I supposed to use. Im a new car driver sorry.. Also do you guys drive with Trac OFF or ON?

CLOSURE !! The saga finally seems to come to an end Had no time to really keep messing with my car and the cold chicago weather didnt help. So I took my car to an independent shop. Next day they tell me the problem causing the shaking/studdering was an electrical problem. Something with the coil pack having a bad wire connection also one of the sparks plugs was not making good contact. Im sure i cause these problems after replacing the IACV. Total cost was $104. Total damage for the expenses were: $100 something for the bogus Firestone diagnostic. Thinking about calling the BBB on them $209 for Idle Air Control Valve actually its called the Idle Speed Control Valve according to the toyota parts dept. This was causing the problem I was having. This was a waste of money also since I could of just cleaned the original one. So now I have an Idle Control Valve. Might try to sell it on ebay. $6 for the Idle Control Valve gasket which is needed anytime you change out this valve $8 for the throttle gasket need this also if the throttle was removed/replaced which it was in order to remove the IACV $104 for reconnecting spark plug and new connection on coil pack. Heck for all I know they just reseated a bad connection on spark plug and coil pack whatever that is. This fixed the shaking/studdering the engine compartment was doing after I replaced the idle control valve Total $427. Live and learn. Hope someone here benefits from my mistakes

Was the engine only knocking if you had it on Drive or would it knock if it was on Park also What if your a do it yourselfer when it comes to oil changes how can you prove to lexus

Update! Update! Picked up my vehicle from the firestone shop they advised me that I would need to rebuild the engine and the car is not starting that I would need to get it towed back home. They charged me $106.00 for their diagnosis. Tried starting the car in the lot and it would not start. Went home that day left car in their lot. Two days later went to the lot armed with throttle body cleaner. But before I cleaned anything I figured I would try starting the car and sure enough the car starts. I drive around and everything is fine no problem with engine and nothing strange at all while driving. Leave car at home I decide to not use the car until I fix this problem once and for all. I also decide to replace the Idle air control valve instead of cleaning it. PepBoys quotes me 236.00 for a IACV and would take 5-6 business day special order. Called the Toyota/lexus parts dept and they quote me 209.00 so I buy it there. I replaced the IACV which was a S.O.B. to do. We also removed the throttle which holds the throttle plate and cleaned it to new. So now the car starts fine like magic. New problem now The second day of driving I notice some shaking/studdering coming from the engine compartment. The shaking/studdering from the engine happens only when I am in DRIVE or REVERSE. It had me worried but I still drove the car for that day. I checked everything hoses, connectors and everything is fine no cracks or loose connections. But the shaking seems to be coming from the throttle area we were working on. Finally while driving the check engine light comes on. The next day I take it to autozone they run diagnostics the 3 codes that come up are below: Random cylinder misfire Cylinder 1 misfire Idle control system misfire Autozone guy tells me that those codes are being caused by the idle control valve he tells me its clogged with carbon and needs to be cleaned What The F at this point I tell him all this started after I replaced the IACV. So they are stumped. I am stumped. Any advice out there would be appreciated. I really need to get this car fixed its been about 3 weeks sitting useless

New member here, Ok here's my problem: My car has had a problem for a good 8 months. It seems to only want to start when the car had been sitting out for over an hour. (Only starts if the engine is cold). If i turn off the car and try to start it in less than an hour the car wont start (I'm assuming the engine takes about an hour to cool).. Once the car is running it is smooth and no problem. the car has 139k highway miles One day about 4 months ago i woke up in the morning and car would not start (I never though to hit the gas pedal maybe it would of started had i done that) Tried to jump start it and no luck. So i had it towed to the lexus dealer and they tell me they took pressure readings and I need to rebuild the small block due to low pressure in cylinders etc etc. around $5,500 to have it rebuilt. I tell them to shove it. They tell me I will need to get it towed back to my house since its not running. Once I get there to pick it up, I try to start it and it starts. So for the past 4 months its been working but only start if the engine is cold. Last week woke up to go to work and the car would not start. Tried hitting the gas pedal to see if that helped but it just would not start same problem as 4 months ago. So i have the car towed to a local repair shop (Firestone). They call me and tell me I need to rebuild the engine. They tell me that they took pressure readings and 2 cylinders have only 50psi (basically dead he told me) the other 4 cylinders have 100psi ( he tells me the specs should be about 200psi)....will go back to pick it up later this week hopefully it will start on its own like four months ago I just dont get it 2 different shops telling me to rebuild the engine. I just find that hard to believe to be the problem. Like I said the problem is only on startup..Once the car is started and running there is no problem rides better than most cars out there.......ANy advice would be appreciated