i cant go past 4 grand

[evil_demon_01]

alright its been a while since i p0osted here but all is fixed except for o2censor so thanks every body

So what did you do to fix it?

[paulhenrick2k8]

What do you mean you cant go passed 4 grand? Is your car auto or 5 speed? Does it do it in every gear?

most likely he means he cant pass the 4000 rpms

[murdochyuga]

i replaced the dizzy. speed sensor and new ecu but now i got a new prob
and i wonder if its do to the o2 sencor because now i can redline it
but every so often like right now it acts up and i cant go past
3200 rpm whats going with that it worked just fine and then bam
no go past 3200

i tried reseting the ecu but it didn't do anything

[fatboy1185]

check all your injector wiring

[chessboxer]

Check the wiring /connection to your ckp and tdc sensors. If the signal from either of these is being interferred with, it will cause the ecu to not rev past a certain rpm, as it loses track of where the engine is in its cycle essentially. Once you check the connection to the sensors, ensure that the wiring to the ecu from the sensors are not messed up somewhere.

[murdochyuga]

okay so now thats solved i got another one my check engine light is still on but now it wont throw the code why is that