Check engine light turned off?
#1
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Check engine light turned off?
I bought my 2000 4Runner about 7 months ago, and three days after I had it the check engine light came on. It was tripping a lean code so I assumed I had a bad O2 sensor but the code reader wouldn't give me any info as to which bank was tripping the sensor.
Anyway, I never got around to fixing the problem and then about 3 days ago all the sudden the check engine light turned off. I thought maybe it burnt out, but when I turn on my ignition it lights up.
The only thing that I have done in the last month is run some Seafoam through the engine, and clean the MAF sensor. I did the Seafoam about a month ago, and the MAF about 2 weeks ago, but there were no imediate results. Do you think that this may have fixed the problem? I wasn't getting the best gas millage before, about 15-16.5 and I haven't been able to see if that went up at all.
Do you think that the problem could have just fixed itself?
Anyway, I never got around to fixing the problem and then about 3 days ago all the sudden the check engine light turned off. I thought maybe it burnt out, but when I turn on my ignition it lights up.
The only thing that I have done in the last month is run some Seafoam through the engine, and clean the MAF sensor. I did the Seafoam about a month ago, and the MAF about 2 weeks ago, but there were no imediate results. Do you think that this may have fixed the problem? I wasn't getting the best gas millage before, about 15-16.5 and I haven't been able to see if that went up at all.
Do you think that the problem could have just fixed itself?
#3
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Well, you've only got 2 O2 sensors (1 pre and 1 post Cat) so you wouldn't have a lean code on an individual bank.
It's a good possibility you fixed your problem when you cleaned your MAF. It's a fairly common problem on these vehicles. Probably more common than an O2 sensor would be.
I'f I were you I'd judt keep driving it and wait to see if the light comes back on. If not then don't worry about it.
It's a good possibility you fixed your problem when you cleaned your MAF. It's a fairly common problem on these vehicles. Probably more common than an O2 sensor would be.
I'f I were you I'd judt keep driving it and wait to see if the light comes back on. If not then don't worry about it.
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Weird..samething happend to me recently. Mine was on for a few days then went away....i'm thinking its likely my O2 sensor seeing on how i'm getting worse mpg suddenly or maybe its the cold weather? Wish I had a scan guage :sigh:
Last edited by Jay204; 11-07-2008 at 12:11 PM.
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