2013 Prius V 5 A scan showed only one misfiring coils.I replaced it but when I started the engine,another one failed. I replaced all coils and spark plugs to no avail. Any input greatly appreciated. Thanks.
Crankshaft sensor?..
Thank you very much.
Aftermarket ignition coils? Typical for Amazon specials to have at least one defective unit in them.
Check your car has the redesigned intake manifold: an intractable P030# on 2ZR-FXE engines built to early 2013 is usually a sign the old style manifold is worn out. There was no recall on these engines, just replace with the new part as needed: plenty of cars slipped through the net. TSB L-SB-0004-13
If you have the redesigned manifold, start praying.
If the car stalls at random besides misfiring, the timing chain sprocket needs replacement with redesigned part. Classic case of Toyota trying to cheapen materials and customers paying for it. TSB EG-00550T-TME
If the car doesn’t stall, check the head gasket. Toyota has finally acknowledged an issue with head gaskets on 2ZR-FXE. They usually fail between cylinder 1 and 2 or 3 and 4, but cooling channel failures are not unknown. Misfires a typical early symptom. TSB EG-005737-TME.
No stalling so far.Only intermittent brief rattling during take off and when the gasoline engine restarts automatically.
If rattling happens with a hot engine, it’s most likely the EGR valve. While the 2ZR-FXE has had its fair share of EGR issues, start from the misfire: TSB T-SB-0116-15 details how EGR operations can be affected by a defective intake manifold.
Thanks a lot.
you replaced them all and the same cylinder is misfiring?
Initially cylinder 2 was misfiring.Now it’s cylinder 4. Thanks for commenting