p0300
02-12-2013 | 08:56 PM
#1
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From: Alpharetta,GA
p0300
i have random misfiring. car has 93k on it. from what i have read is most like a tune up is need. i could/would love to do a tune up myself but i dont have anytime on my hands. i get paid this frday and plan on getting it done. would it be ok to get it done at, lets say NTB,goodyear etc? or should i bite the bullet and get raped on dealership cost?
02-12-2013 | 09:05 PM
#2
Please read the misfire thread as in my signature - It would be much more worth doing a little bit of easy, not time consuming diagnostics of your own - You may find out that it is worth doing yourself.
But if you are certain you want to go to a dealership or shop... just make sure you go to one that works on our cars. A dealership should know what they are doing, but you'll get charged out the ***.
But if you are certain you want to go to a dealership or shop... just make sure you go to one that works on our cars. A dealership should know what they are doing, but you'll get charged out the ***.
02-12-2013 | 10:02 PM
#3
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From: Alpharetta,GA
i read your sticky before. but if i dont have all the money to buy the whole kit at one. do you think it will be ok to just replace spark plugs for now?
see kits on ebay for $140+ what do you think about those they are ngk stuff
see kits on ebay for $140+ what do you think about those they are ngk stuff
02-12-2013 | 10:07 PM
#4
I JUST typed this up for another owner:
If you are misfiring and you have even close to 30,000 miles OR MORE on your ignition, replace it all. You can do coils plus wires plus plugs for around $200 from auto parts stores. If you can't afford to spend that, then stop driving your car. Failing ignition directly leads to accelerated cat failure, in as short as 30-200 miles, and a failed cat is $1,300 new, more than $200 used. Cat failure then starts damaging your O2 sensors, at $140 for the rear and $250 for the front. IT then starts damaging your engine, at $3,000+.
So if you can't afford $200 for ignition replacement with OEM, stop driving until you can afford it. Seriously. Because the repair costs are going to keep snowballing higher and higher and higher.
Have you seen this thread?
https://www.rx8club.com/tech-garage-...t-here-222280/
Misfires are NOT caused by 1 thing. They can be caused by a WHOLE HOST of different problems. Coil failure, plug failure, plug wire failure, compression failure, vacuum leaks, fuel trims, O2 sensor malfunction, MAF malfunction ESS malfunction, exhaust leaks, bad fuel, electrical grounding problems, fraying belts, clogged or stuck injectors, failing fuel pump clogged fuel filter, clogged cat, overheating, localized hot-spotting, carbon caking, carbon fouling, etc... It's a pretty big list.
Basically any possible part of the car that can cause an unexpected change in the fuel delivery, air delivery, or spark delivery, regardless of if the change is up or down, can cause a misfire.
There isn't "1 solution", because there isn't "1 cause".
Yes, everyone is able to solve their misfires, and they usually do. You just haven't landed on what your particular issue is. Although you could have it from multiple sources. Like failing ignition clogged the cat, fried the O2 sensor and damaged compression. That's 4 different things that can cause a misfire, and only fixing one of them still leaves the other 3 causing them. And yes, that sequence is not only possible, it happens far too frequently.
https://www.rx8club.com/tech-garage-...t-here-222280/
Misfires are NOT caused by 1 thing. They can be caused by a WHOLE HOST of different problems. Coil failure, plug failure, plug wire failure, compression failure, vacuum leaks, fuel trims, O2 sensor malfunction, MAF malfunction ESS malfunction, exhaust leaks, bad fuel, electrical grounding problems, fraying belts, clogged or stuck injectors, failing fuel pump clogged fuel filter, clogged cat, overheating, localized hot-spotting, carbon caking, carbon fouling, etc... It's a pretty big list.
Basically any possible part of the car that can cause an unexpected change in the fuel delivery, air delivery, or spark delivery, regardless of if the change is up or down, can cause a misfire.
There isn't "1 solution", because there isn't "1 cause".
Yes, everyone is able to solve their misfires, and they usually do. You just haven't landed on what your particular issue is. Although you could have it from multiple sources. Like failing ignition clogged the cat, fried the O2 sensor and damaged compression. That's 4 different things that can cause a misfire, and only fixing one of them still leaves the other 3 causing them. And yes, that sequence is not only possible, it happens far too frequently.
So if you can't afford $200 for ignition replacement with OEM, stop driving until you can afford it. Seriously. Because the repair costs are going to keep snowballing higher and higher and higher.
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