The PCV is a valve and a hose, that sucks engine ring bypass gasses and reburns them. if it plugs up the engine leaks oil.
if the hose cracks it sucks air and the AFR goes lean and bucks.
jerks.
only on engines (unstated) that use a MAF sensor.
engine that use a MAP sensor ,race too fast with full power and no jerk with air leaks.
next time post engine type. as we can not guess this.
the list.....
2.0 L
FS-DE I4 (99-02)
2.3 L
L3-VE I4 (02-05)
2.5 L
GY-DE V6 (99-01)
2.5 L
AJ V6 (99-02)
3.0 L
AJ V6 (02-06)
2.0 L
RF MZR common rail turbodieselWHAT ENGINE PLEASE.
if unsure, (why fix any engine,if unsure>)but in the USA
the hood EPA sticker states this clearly.
no engine , no country, no joy,
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