Last post on Nov 29, 2013 at 3:42 PM
You are in the Toyota Corolla
What is this discussion about?
Toyota Corolla, Sedan
#2215 of 3856 Re: Code P0171 [paulrl]
Dec 03, 2005 (2:39 pm)
I have a 2000 Toyota corolla. I went on a 500 mile drive and on my way back home the check engine light turned on. I took it to the dealer and he ran the computer diagnostics ($90 already just for diagnosis). He said the code P0171 System Too Lean and gave me 2 options:
> Clean the Air Flow Sensor ( 2 hour labor, no garuntee of how long it will work)
> Replace the Air Flow Sensor (2 hour labor + new part($180))
Can anyone advice, what needs to be done? I have searched a few forums and found that for a few even though the part was replaced the engine light came back on after a few months.
What happens if I leave it as is? They have reset the engine light and it is gone for now (drove only 15 miles after the reset). If I want to go for the repair, is it better to get it cleaned ( the first option) or replace it altogher?
Any advice will be of great help.
#2217 of 3856 When to change oil
Dec 04, 2005 (5:35 am)
I have a new 2006 Corolla. It is approaching 3,000 miles. I do regular Highway/City driving. The manual says first oil change at 5,000. I am trying to break away from the old school every 3000 miles bit. I still remember the very first oil change coming even sooner(shaved metal pieces in the oil and such). Should I just wait to 5,000 miles? Thanks.
#2218 of 3856 Re: When to change oil [chris333]
Dec 04, 2005 (7:16 am)
Nothing wrong with waiting...this is an area of massive myth that will never go away.
If you want to change it sooner, no one is going to discourage you, but it's not necessary, first change or not.
Dec 06, 2005 (2:09 pm)
Coming from the unrefined world of GM, my 05' Corolla S is light years ahead in quality and reliability and most of all gas mileage compared to my former pushrod 3.4 V6 Grand Am. I have no complaints other than 3 things:
1) The starting problem: after 30 min of driving, it's very difficult to start. I have to crank the engine 5-6 times. The dealer said that they started the car about 30 times without a prob.
2) The AC smells strange, like the inside has mold and the air is humid all the time, even when the weather is dry & the AC hasn't been used for a while.
3) The car hesitates for a second when accelerating from a stop.
Can anyone help?
This is my first aim at buying a something that's not from the Big Three (GM, Ford, and Dodge). I hope this car will back up Toyotas reputation for reliability.
#2221 of 3856 Re: 05' Starting Prob [nightattack]
Dec 06, 2005 (4:12 pm)
1). Try to turn your ignition to on, and wait a few seconds before turning the key all the way to engage the starter, and try to avoid applying gas while starting. What does your manual recommend?
2). See if with the AC on, the vehicle is sending water out and down the evaporator drain line to the road surface. With the car in Park with emergency brake on, and the motor running, turn the AC on. Go around to the passenger side front. Look underneath. Do you have water dripping at a good rate to the ground? Do you have water / damp mats in the passenger floor wheel well? Remove all the mats and look for any moisture under them.
3). I think there has been a TSB issued for improving drivability characteristics of the Drive By Wire system by re-flashing the ECU (Engine Control Unit). Some people claim it takes the vehicle some time to learn your driving habits and adjust its control parameters.
#2222 of 3856 Re: 05' Starting Prob [user777]
Dec 06, 2005 (4:44 pm)
Thanks for the advice on all 3 prob. Regarding the AC, if the water drain/vent is plugged, is that a warranty repair if my car has 20K? Also, is there a TSB out on the starting prob? Thanks in advance
#2223 of 3856 Re: 05' Starting Prob [nightattack]
Dec 06, 2005 (6:33 pm)
if the AC isn't draining to the road surface, generally this means the evaporator pan drain is probably:
clogged with debris -or-
kinked / collapsed -or-
disconnected or not exiting properly though the firewall
if your car has 20K - i see no reason why it wouldn't be a warranty repair. should be superfast for them to diagnose. even if it isn't because of the evap drain - it should be warranty...for example it could be a leaky seal on a window, or body weld or missing body plug, or clogged sunroof drain (the possibilities are pretty numerous).
i have know knowlege of a TSB on starting issue, only the hesitation issue as a result of it being discussed in the Engine Hesitation (All makes all models) discussion forum.
you have an '05 with less than the mileage limit on warranty coverage. see your dealer and think positive.
#2224 of 3856 Re: Code P0171 [skanth]
Dec 06, 2005 (10:14 pm)
On my 2000 Corolla I had the same code. I just took it apart myself and cleaned it. Took about 20 mins to do. Also it's probably the front oxygen sensor more than anything. The dealer is trying to rip you off. By the way you can get those code readers at any auto parts store for about $90-$100. When I sold that car with 208,500 that's the only thing I replaced on it besides a cat converter and regular maintence. Wish I would have kept it but had to get rid of it due to personal reasons with the car.