I bought this to commute to school [aboot 500/week]. 168,000 miles. So far have gotten 30-40mpg driving at about 60mph, but I'm hoping to do better. Car bogs a bit at low throttle, so I replaced the stock TPS but problem persists. Also, car idle varies from 600rpm to 1300rpm when hot. Changing the load on the engine affects the idle a bit [ac on/off, wiper on/off, etc] as you would expect. I can't seem to figure out why the idle creeps up ad down. The dizzy and wires look new, but I have no idea if the previous owner had the right parts put on. Me thinks I should look at O2 sensor or ECU . Please help me if you have any clues as to what to look at next. I want to get about 50mpg or more if possible. Thanks all for making this forum so information rich!
dogncatboy 
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