Which coil pack is bad

This make the engine run smoothly. If you had one spark plug firing properly and three that were not you could damage your engine as it would be a bit out of balance. It is very likely that all 6 plugs are in equally bad condition, so replacing only half is sort of pointless. A faulty ignition coil cannot be repaired; it must be replaced. In cases like this, to prevent future problems, your mechanic may recommend replacing all three rear ignition coils. Begin typing your search term above and press enter to search.

Press ESC to cancel. Ben Davis April 1, What causes a coil pack to go bad? What does it sound like when spark plugs are bad? What causes spark plugs to go bad fast? Can AutoZone Check spark plugs? Delaying it could lead to a more serious problem like a deteriorating engine performance and a damaged catalytic converter. Driving a car with a bad coil pack also compromises your safety as it tends to stall, misfire, and stop while you are driving. Remember that even if only one coil goes bad, chances are, the others will go bad too in no time.

Fortunately, most ignition coils are not that pricey and are easy to replace. Having your car checked by a professional is a sure way to fix and get rid of the bad coil pack symptoms.

Why Us? If your car is overheating, you may be losing power due to the engine running above the operating temperature it was designed for. This could quickly harm the engine and cause further damage if not addressed quickly. This would raise intake temperatures and reduce power.

It would be best to take your vehicle to a mechanic you trust to have it checked out in person. I agree with your mechanic that the ignition system is a likely cause. I would change the spark plugs and consider changing the coils if necessary.

Try to test the coils before replacing if you can, as they can be a bit spendy on some cars. I have a Oldsmoble Cutlass Supreme S 3. So is that a good deal? Could it be done cheaper? Cheaper is not always better. Ignition coils are expensive, so it sounds plausible to me. Can i replace only one faulty ignition coil or must i replace all of them even if the rest are ok? Ignition coils often wear with use. The greater the engine speed, the faster the wear.

If they are all the same age and one of the coils wore out, I would expect the others to not be far behind. My honda odyssey has check engine light p when I driving fast and i changed the spark plug, coil and injector but the problem continues. It could be a leaking or clogged injector. You could try swapping injectors around to see if the misfire follows one specific injector. That would help you narrow it down really fast. I have a Chevy Silverado 6.

What could be causing this? See if there are any codes and take it from there. I have a Chevy Traverse has , miles on it and when I start it up sometimes it sputters to start like barely no power.

Every so often it stalls right after starting, as well as a small pop or tick sound when starting only when started while the engine is hot. No check engine light good fuel pump, alternator and starter are good, had a tune up spark plugs should be good, fluids are good and battery is giving off good voltage. Any check engine lights? It is a wonderful blog post.

Here, I have made a conflict between points 5 and 7. I found it the same. Could you please make me clear? Engine jerking or rough idle could mean misfires that cause the engine to deliver power unevenly. An engine that is hard to start may crank for a long time before starting, or may fail to start entirely the first few times. I have an Mazda mpg that cuts out and dies at about rpm.

Replaced coil packs, idle air control valve, mass airflow sensor and oxygen sensors and it still does it. Been to 3 different shops and no one can figure it out. Could it be a faulty computer? Does it die as soon as you rev it up to 2, RPM, or when you hold the tachometer there with the throttle?

It does it when you drive normally, as soon was it gets to rpm it skips, motor bangs around and dies. Have you checked the timing? Timing was checked and car was run on diagnostic machine and nothing was found.

After it dies it starts right back up but overdrive is off, headlights and tail lights are barely lit and the airbag light comes on.