14 mpg wtf???
07-29-10 | 02:24 PM
#17
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From: Kamakura JPN San Diego CA
My 97 SC300 averaged 22mpg and got as high as 28mpg on the highway on long trips.
Try to figure out the idle issue, its supposed to be 600-800. My SC only idled that high on a cold start but went down after it was warm so maybe you have a temp sensor thats not telling the ECU that its warmed up??
Try to figure out the idle issue, its supposed to be 600-800. My SC only idled that high on a cold start but went down after it was warm so maybe you have a temp sensor thats not telling the ECU that its warmed up??
07-29-10 | 11:50 PM
#21
Lexus Test Driver
Joined: Aug 2009
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From: CA
Yep.. you've done just about everything else. How about also change the fuel filter? You mentioned one cylinder might not be firing.. Thats an easy test and covered somewhere in youtube. Might not be of the same car but the process/steps are the same.
07-29-10 | 11:58 PM
#22
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From: Kamakura JPN San Diego CA
I havent changed the O2 sensor yet. Wouldnt all of these throw a code? Or is the obd1 ecu just oblivious to it sometimes? I know my other OBD2 car will throw a code if you look at it wrong. Clogged cat...Wouldnt that make my cat glow red? I do hear some popping sounds in the exhaust after I turn it off. I figured it was normal.
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