my e30 wont go higher than 2000rpm help

[lbc318is]

i have a 1991 bmw 325i 4 door

problem

wont go higher than 2000rpm

thing done to it

tps sensor
maf sensor
idle control valve
o2 sensor
spark plugs
wires
cap n rotor
timing
fuel pump

can some one plz help me out i dont know wat to do

[paperplane94]

How is the trans?
IT sounds like some kind of limp home mode.

[alfie]

same here but the only thing i havent done is adjust the tps sensor i hope someone can help us both..

[LJ851]

A bad crank position sensor can cause the symptom you have.

[jlevie]

A bad CPS or a fuel delivery problem would be my first suspicions.

[Gregs///M]

You "did" the maf sensor? Not sure what that means but I've seen problems like this with the AFM, which is what your car has, not the MAF. Double check the output and inputs to the AFM.

[DTMbimmer07]

did you ever find the answer to your problem? my car is doing the same thing after i just swapped in my new built motor and its driving me insane

[dnguyen1963]

You "did" the maf sensor? Not sure what that means but I've seen problems like this with the AFM, which is what your car has, not the MAF. Double check the output and inputs to the AFM.

Which E30 model year uses AFM or MAF?

[slammin.e28]

Which E30 model year uses AFM or MAF?

All of them are AFM stock.

[dnguyen1963]

All of them are AFM stock.

So..MAF is used in post E30 models?

[slammin.e28]

So..MAF is used in post E30 models?

Basically it follows the engine. AFM is M20, M30, M42, M10.
MAF is M50 and up. Basically all 24v+ engines are MAF, with the exception of "S" engines in M cars (M5, M6).

[dnguyen1963]

Basically it follows the engine. AFM is M20, M30, M42, M10.
MAF is M50 and up. Basically all 24v+ engines are MAF, with the exception of "S" engines in M cars (M5, M6).

Thanks!