boms
12-30-2011, 07:28 PM
Ok long story short...
93 240sx with red top.
mods
z32,gt2871r,ras,greddy intake,greddy fmic,tubular exhaust, 3 in exhaust, stock injectors,stock fuel pressure regulator, jim wolf tune,
i recently rebuilt my motor. Stock specs, arp mains and head, cometic gasket, and so on,
Ran great,for about 300 miles. Then started to have issues. While driving after about 30mins the car would buck and lose power. Ok maf is going bad or is bad. no big deal. Tested it,checked it and so on.. Ended up buying a NEW maf. Still same thing. Wont rev past 3000, rich as hell,black smoke and fireballs.
So i took the harness off and went threw it. Fixed alot of the wiring. Checked all the wires. Made sure everything was good to go. No breaks in any wires. Put the harness on. started the car. It was then missing on number 2. Had spark, injector was no firing. Checked power. Had power to them all. Checked ground. All had ground besides #2. So i checked it at the ecu. Ecu was not sending the ground.. So it was fried. Ok no biggy. Replaced with a spare. Fired right up and ran great.....
put it on the dyno. Made some pulls, was making 275whp 230tq at 11psi. Afr was in the low 10's. Cool!! happy so far.. Took it out on the road. Cruised around, got on it in 2nd gear and BAAMM. Did the same thing lost power, Cant rev past 3000. Went back to the shop checked the maf and the connectors in the passenger side harness. Where maf gets power from. Blew them out started it.. Ran great. Took it down the road did good, Pulled hard. Then it did it again. So I checked the maf, changed the cas, check tps, no leaks.. My maf is grounded right, coil pack harness is grounded, and have engine ground under the manifold...
Im lost and cant get this figured out. Sorry for the long story just tring to narrow this down.
93 240sx with red top.
mods
z32,gt2871r,ras,greddy intake,greddy fmic,tubular exhaust, 3 in exhaust, stock injectors,stock fuel pressure regulator, jim wolf tune,
i recently rebuilt my motor. Stock specs, arp mains and head, cometic gasket, and so on,
Ran great,for about 300 miles. Then started to have issues. While driving after about 30mins the car would buck and lose power. Ok maf is going bad or is bad. no big deal. Tested it,checked it and so on.. Ended up buying a NEW maf. Still same thing. Wont rev past 3000, rich as hell,black smoke and fireballs.
So i took the harness off and went threw it. Fixed alot of the wiring. Checked all the wires. Made sure everything was good to go. No breaks in any wires. Put the harness on. started the car. It was then missing on number 2. Had spark, injector was no firing. Checked power. Had power to them all. Checked ground. All had ground besides #2. So i checked it at the ecu. Ecu was not sending the ground.. So it was fried. Ok no biggy. Replaced with a spare. Fired right up and ran great.....
put it on the dyno. Made some pulls, was making 275whp 230tq at 11psi. Afr was in the low 10's. Cool!! happy so far.. Took it out on the road. Cruised around, got on it in 2nd gear and BAAMM. Did the same thing lost power, Cant rev past 3000. Went back to the shop checked the maf and the connectors in the passenger side harness. Where maf gets power from. Blew them out started it.. Ran great. Took it down the road did good, Pulled hard. Then it did it again. So I checked the maf, changed the cas, check tps, no leaks.. My maf is grounded right, coil pack harness is grounded, and have engine ground under the manifold...
Im lost and cant get this figured out. Sorry for the long story just tring to narrow this down.