Got Milk

hey whats up we have another problem with my friends jdm b16 hatch...okay here it is.... as soon as we start the car it sounds like ur reving it back and forth to 3k meanwhile ur not even touching the throttle...and when we rev it to around 4-5k...it sounds like its bouncing off the rev limiter.... any ideas as to why its doing these 2 things???

2fast4u831

check the wiring and check the sensors. Check codes too if any

Got Milk

which sensors would most likley do this

2fast4u831

tps sensor might be messed up. Its in yor throtle body

Got Milk

i dun think so...because my tps and map sensor were switch and the car wouldnt rev then i realized it was switch and put both sensors in there correct place..and the car can rev but idles weird...my friend said it could be the idle air control valve...but im open to other ideas u guys have..

jdmeg9

your tps sensor will make your rpms bounce eradically. if you had them plugged in wrong then it kick your cel and it might have sent your ecu into safe mode

alleyezonme

that sounds exactly what my swap sounded like, it is was that the tps and map were switched. double check that you didn't switch back to the wrong way instead of the right way.

JDMFreak

like what everyone said, tps, if you know you got the correct wires in place, i would try changing tps or changing throttle body...see if that help bro good luck!