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: Car bucks, jerks, and idles rough - 1991 Ford Mustang

Hey there. This may be a sign of a failing idle air control valve. The idle air control valve is located on or near your intake manifold and monitors the air intake as it is mixed with fuel prior to...

Q: 08' Ford Fusion shifter stuck in park, flashing check engine light, sounds like air bubble in engine or sputtering when given gas

Hello, thank you for writing in. You are likely dealing with multiple problems at once, and only further testing will tell. The first step, due to the check engine light, is to scan the vehicle for diagnostic codes. Use these...

Q: There is a rattling noise coming from my exhaust when my car is idling.

Hello, the exhaust system noise can be created from a heat shield (light tin type sound). Rattling could be from a hanger which support the system. A muffler and catalytic convertor can internally make a rattle type noise. The vehicle...

Related articles

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...
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.