ok, well i started with taking apart the air filter because it's an aftermarket. and i saw that a sensor wasn't plugged in. i found out that it's my tps but when i plugged it in my car revved kinda high, then leveled a little but it was still high. then the car just shut off
Thread: very bad gas mileage  |
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Started 1 month, 2 weeks ago by hatchkid92
i have a 92 civic hatch with a d16y8 that gets about 12 mpg. i've put in a new o2 sensor and map sensor. what else can i do? i can't drive fast because i have to put in my new clutch. but my oil turns black after a couple weeks. i do have an exhaust leak in my headers. but it's not that bad. the exhaust does come out black though. To remove this ad, register today for free or ...
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gearbox replied 1 month, 2 weeks ago
sounds like you are running too rich (too much fuel, too little air). im not sure where to start, maybe check the usual maintenance items like plugs, air filter, intake system parts (make sure they are cleaned up), injectors may not be spraying properly. try the gas and oil additives in my sig below
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gearbox replied 1 month, 2 weeks ago
you need to reset the ecu after plugging everything back in. warm up the engine, turn off, then disconnect the battery. reconnect, start car, and let it idle 15 mins without any accessories or pressing gas. then turn off. you may want to clean the intake system parts and idle valves before doing the idle learn as well, and make sure the TB and other gaskets are sealing properly.
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hatchkid92 replied 1 month, 2 weeks ago
i don't have any way of telling if my gaskets are sealing properly. but i reset the ecu, and tried to let my car warm up but it kept shutting off. so i drove it around until it warmed up, which was pretty difficult. then i parked it, disconnected the battery and reconnected it. started the car and it idled at a couple different rpms and then just died. i tried it at least three times. so i just ...
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hatchkid92 replied 1 month, 2 weeks ago
i just took my car to the honda dealership. they looked at it, told me i had the wrong intake manifold on it and that i needed a fast idle thermo valve and gasket...they wanted to do it for 400 dollars.
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gearbox replied 1 month, 2 weeks ago
may be a bad tps sensor then. its reading the wrong throttle position and the ecu is getting confused. and usually its easier to change the whole throttle body. they are around $50 on ebay for a used one.
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hatchkid92 replied 1 month, 1 week ago
do you know where i can get a fast idle at? honda wants like 120 bucks for one
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hatchkid92 replied 1 month, 1 week ago
and i'll put up some pics sometime this week hopefully
i have to find my camera
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hatchkid92 replied 1 month, 1 week ago
alright, i'll give it a try
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hatchkid92 replied 1 month, 1 week ago
so, i found my camera. so i have pics of my car now
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