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Old 08-24-2008, 05:04 PM   #1 (permalink)
Sphinx415
 
Join Date: Aug 2008
Location: fla
Posts: 4
Trader Rating: (0)
serious sputtering on s14 sr with no end in sight

ok...i have tried forums after forums and nothing...here is a video of what is going on...car was running fine to work about 3 months ago....got off work tried to go home and car started to buck under boost...once i get into boost it brakes up a lot and acts like it will die and run like crap...ok...so heres a list of what i have done...i have checked for timing...its good...boost leaks...i did a pressure test on the whole system and fixed about 3 leaks...minor leaks...new couplers new clamps...new ecu just bought it...new spark plugs gapped to .028...coil packs seem to work fine...i disconnect then one at a time and stuck a screw driver in it and watched the spark jump on each one...fuel pressure is at 32psi with fpr vac and 42psi with no fpr vac....did a compression test and it holds at 125-130psi on all 4...no smoke out the exhause...the only way i know how to check the maf is that i unplug it while running...and it seems to go to higher idle rpms and then drop to normal and when i plug it back in it almost dies but continues to run and go back to normal idle...ibattery at idle is 13.6 voltage...maf voltage is....white wire is 1.14volts and black wire with white strip 13.75 volts...tps... white wire is .189volts light blue with red stripe is 5.09 volts at idle,....tps without the car running just in the on possition is blue w/ red stripe 5.09 and white wire is .25 volts.. closed and wide open is 3.90 volts...in the on possition the coil pack harness is 11.5 volt across the board on the middle wire...maf voltage on the on possition black wire w/ white stripe is at 11.5 volts...let me know if you guys need any more voltage from anything and ill gett it..or if my voltage is wrong.....i think thats about it...anything else or that im missing?? im lost i need a lot of help..... im going nutts.

stock everything except fmic and greddy bov 3" exhaust...
s14 with s14 sr20det zenki.
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