Q: I changed the coil pack spark plugs and plug wires my car still runs bad why

asked by on

My car runs bad when I changed the plugs plugs wires and coil pack I don't understand why still doin that

My car has 89000 miles.
My car has a manual transmission.

If the engine is running bad then you should be getting a code set in the computer. If not, then a scanner should be used to view data to see if the engine is running lean or rich. Check the intake tube between the mass air sensor and the intake throttle body for any leaks. Clean the mass air sensor and monitor it to make sure it is reading the correct barometric pressures. These sensors are known to not give the correct barometric pressure for the altitude you are at.

I’d suggest you get the car inspected by a certified mechanic who can diagnose your rough running symptoms and make the necessary repairs to get your car running smoothly again.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. I changed the coil pack spark plugs and plug wires my car still runs bad why

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: Engine will start but not run

Hi there. Starting a vehicle only to have it quit immediately after can be confusing and annoying for many drivers especially if their vehicle has not experienced this type of issue before. Typically, a vehicle will start and then quit...

Q: Transmission needs new clutch assembly will I damage the transmission further driving on it until the dealer gets the new part

If the dealer needs to overhaul the transmission for a bad or broken clutch, you may do additional damage driving it before they get to the repair. My suggestion is to ask the service center that will be doing the...

Q: Q: truck wont start

Hello. You need to have a positive reading at one of the posts. If you do not, then you have a voltage issue. You would need a voltage meter to check the voltage supply. Once that is fixed, then the...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...