- :
- 2014 Mazda CX-5
Hey All,
Quick background on issue:
Saturday morning, car started up fine with no issue and after a few minutes of driving, as i go to turn onto the highway, all of a sudden it felt like i had a flat tire. So i kept driving a couple of feet and then the Traction Control, Tire Pressure, and Check Engine light came on all at once. I drove to the nearest gas station and popped the hood to see if anything was wrong, and oil was fine, coolant was fine, etc. So with all 3 lights on, i slowly drove it home which was about 5ish minutes away. In that time, the car was in limp mode and would not go above a certain speed. I get it home, park it, and leave it for a day to rush to an important event.
The next day, i put the ODB reader in and i got the error P0304 that indicated a misfire in Cylinder 4. Looked online and saw that cause could be due to spark plugs, which with 110K miles and having never been replaced, i went with that diagnosis for my situation.
Hopped on Amazon and ordered new spark plugs, specifically NGK 94124 that have been recommended on this forum and other places as being identical, if not the same as OEM. Didn't touch the spacing as it was also said the default spacing they come with is correct for Mazda and no adjustment is needed.
So i eventually was able to get them all replaced, and started the car, and all the lights were now gone. I put the ODB reader back in and no additional codes or pending codes showed up, so i figured all was good. Car started alot better than it did previously.
Only issue is, the engine still has a rough idle in park and when in drive, and the exhaust has a put put put noise that i never noticed previously.
Questions
1. Any idea what could still be causing the rough idle when in park and stopped in drive, as there are no dash warning lights lit up pointing to anything?
2. Could i have damaged the catalytic converter or something else when i drove it from the gas station to home with the CEL on?
Planning on getting it towed to the shop for diagnosis next week if i can't figure it out.
Appreciate any help or info.
Quick background on issue:
Saturday morning, car started up fine with no issue and after a few minutes of driving, as i go to turn onto the highway, all of a sudden it felt like i had a flat tire. So i kept driving a couple of feet and then the Traction Control, Tire Pressure, and Check Engine light came on all at once. I drove to the nearest gas station and popped the hood to see if anything was wrong, and oil was fine, coolant was fine, etc. So with all 3 lights on, i slowly drove it home which was about 5ish minutes away. In that time, the car was in limp mode and would not go above a certain speed. I get it home, park it, and leave it for a day to rush to an important event.
The next day, i put the ODB reader in and i got the error P0304 that indicated a misfire in Cylinder 4. Looked online and saw that cause could be due to spark plugs, which with 110K miles and having never been replaced, i went with that diagnosis for my situation.
Hopped on Amazon and ordered new spark plugs, specifically NGK 94124 that have been recommended on this forum and other places as being identical, if not the same as OEM. Didn't touch the spacing as it was also said the default spacing they come with is correct for Mazda and no adjustment is needed.
So i eventually was able to get them all replaced, and started the car, and all the lights were now gone. I put the ODB reader back in and no additional codes or pending codes showed up, so i figured all was good. Car started alot better than it did previously.
Only issue is, the engine still has a rough idle in park and when in drive, and the exhaust has a put put put noise that i never noticed previously.
Questions
1. Any idea what could still be causing the rough idle when in park and stopped in drive, as there are no dash warning lights lit up pointing to anything?
2. Could i have damaged the catalytic converter or something else when i drove it from the gas station to home with the CEL on?
Planning on getting it towed to the shop for diagnosis next week if i can't figure it out.
Appreciate any help or info.