Q: Runs rough and misfires

asked by on

it has new plugs and wires code reader says o2\s are good both of them it has a miss number five cyc. code reader says some thing code reader says some thing about trigger system i never herd of a triggering system on these it runs rough at speed it pops and coughs can any one help with this regards joe

My car has 230000 miles.
My car has an automatic transmission.

Hello. The trigger system that your codes may be referring to could be the crankshaft or camshaft position sensors. Many engine management systems use these signals as a trigger point for their ignition systems. It could be possible that there is a problem with the sensors, or perhaps the associated wiring or connectors. Similar symptoms can also be caused by other issues, such as fuel or ignition system problems. If you are unsure, I would recommend having a professional technician, such as one from YourMechanic, visit your location to diagnose what may be causing your misfires and warning lights.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. Runs rough and misfires

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Code 1349 P

Hey there. Try having the compression checked for each cylinder. I have had experiences where this code pops up due to a lack of compression from a burned exhaust valve. Also, are you using the right fuel? Using inferior fuel...

Q: The car idles rough when in drive with the brake applied.

Hi there. It is quite possible that during the head gasket replacement, a fuel injector or ignition system component may have been improperly installed. It is also highly probable that the mechanic installed the old spark plugs instead of new...

Q: I drive a 3 diesel surf, automatic transmission. It's hard to gear shift, especially in the last gear.

Hello, thanks for writing in. Harsh shifting with higher mileage 4Runners may be caused by throttle position sensor faults or miscommunication with the transmission controller. Re-learning between these 2 components will help. Harsh shifting can also be caused by a...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.