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tps sensor

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Old 12-04-10, 11:42 PM
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tps sensor

91 glx with s5 turbo II swap
emissions removed.
miss match sensors with n374 ecu
no bac sensor
new water temp sensors
omp resistance checks out.

so ive bin working on this car for some time now, as of right now it runs ok but not like it should. somethings still not right. ive noticed that when the tps sensor is unplugged, it starts right up but will not rev if i give it gas a little more aggressively. i can feel when i open the secondary Butterfly's with my foot/gas peddle, and begins to kinda die down. i have an air/fuel gauge on it and as soon as i give it gas it gets supper lean, sometimes to the point where its not even on the gauge.
if the tps sensor is plugged in on the first start it revs to about 2k and idles fine for about 20 seconds then dies, if i try to start it again after that it will start for about half a second then die again, if i unplug the battery it will do the same, start for about 20 seconds. if i give it gas while its on it dies.
something i noticed is that i have no check engine light, when i turn on the ignition ( on the idiot panel) all the other lights come on except for this one. ive checked the bulb and its good.
question is, why is it doing this? what could i check. any guess's? thanks for any info.
Old 12-05-10, 12:10 AM
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Search thread titles for "N374". That J-spec ECU often fails to fire one of the primary injectors properly. Whatever sensors you have mismatched may also be a problem. If it includes the AFM or boost sensor, fuel and timing will be affected.
Old 12-05-10, 01:54 PM
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Originally Posted by RotaryRocket88
Search thread titles for "N374". That J-spec ECU often fails to fire one of the primary injectors properly. Whatever sensors you have mismatched may also be a problem. If it includes the AFM or boost sensor, fuel and timing will be affected.
thanks ill look in to it
what sensors do you think would be best for my setup? then N370's?
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