PCV valve problems

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Low power/ stall/ no codes

Ford F-150 2008 XL/ 4.6 liter 297000 miles
While driving at various speeds, truck stalls occasionally. Rough idle and loss of power as well. I have replaced-fuel pump and control module, plugs and COPs, cam and crank sensor, sent pcm out for testing(good), and pcv valve and tube, cleaned throttle body, had cats looked at(good). Sometimes it happens daily, sometimes I can drive it for a month. I’m ready to scrap it! Advice please.
Dave from United States 2 years ago  
DA
12 reports 
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