Worse gas mileage after cahnging O2 Sensor?
04-11-07, 09:03 AM
#1
Worse gas mileage after cahnging O2 Sensor?
I don't see how this is possible, but I was actually getting better gas mileage with my '97 SC300 5spd before I changed my O2 sensor. I was getting about 315 miles per tank om average (full to empty), but now I'm only getting about 285. I thought that it might be some bad gas on the initial fill up, but it's been like that each time since. I changed the O2 sensor because I threw a CEL and the OBDII scan pointed to the 02 sensor as being the problem. Any ideas?
04-12-07, 07:21 AM
#4
Lexus Test Driver
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Reset your ECU by unplugging the neg terminal from the battery. Then go run your car pretty hard for a few minute. Make sure it's warm. I do this to my car. First time i changed my plugs this is what happened and I ran into a post in SoarerCentral On how to fix these Gas problem. This is for the 1jz not sure if it's the same for other engines, but it's worth a shot. Worked for me.
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