Thread: 94 g20t problem !

when my car warms up and im driving. if i get on it it pulls fine until bout 4300 rpms an starts boggin till about 5800-6000 rpms than it starts to pick back up but by than i have to shift at 7000 rpms. im runnin stock motor with aftermarket are intake, and a lsd tranny. any suggestions on what the problem is or whats goin on ??? also i have to two engine light codes ones for a knock sensor, other is for a crank shaft position sensor.

anyone ?

Fix your codes first. I know with some bolt ons and stock ECU it tends to naturally dip in that RPM range. You will need a tune to get rid of it.

CPS effects iginition and fuel.. that could be your problem there, knock will retard timing if not working right and make it worse.

hmm I though CPS was only to detect misfire by cylinder, how do you found about effecting fuel and ignition?
I have always had CPS code because my fidaanza flywheel dont have the correct thooth.

thankjs yall keep them comin

cps is basically another wey to read wht cylinder is gonna fire next. also tells you what cylinder just misfired cuz it reads the "slowing" down of the flywheel. if u got an obdII u have one offset tooth to tell the cps what certain cylinder is at tdc (usually #1) because it reads off of a digital wave.

if someone put the wrong tooth fly wheel in will that cause a problem like what im explaining ?

I do not think so, i have a fidanza flywheel on one of my race cars and it doesnt do that. But i do have a similar problem with my street car. only diff is that it wont go any faster after it warms up. i have checked and cleaned mass air, checked tps, disconneted ks and 02 sensor replaced cap and rotor, set timing, swapped ecu's engine coolant temp sensor, icu and tested the coil. only thing i havent done is checked fuel pressure and swapped the distributor. if anyone else has expirienced this problem and has an idea i will listen.

i was goin down the road last night in 3rd when i got on it it started to idk how to explain i guess shimmy ? it was as if it was tryin to rabbit hop but i was at 4800 rpms