I was having warm start issues and recently cold starts issues too, the P0300 code showed up also, just changed the coil pack 6 warm starts and not a single problem or hesitation, thanks for your video man you helped me a lot
Another great video. I’ve moaned a few times about access when working on my 1.8iS, but having changed the water collector and thermostat housing on my son in laws Citroen C4 Picasso this weekend I’ll never complain again. An absolute nightmare, to get to just 4 heater and radiator hoses together with various electrical connectors, 3 bolts and a clip on the water passage from the engine block we had to remove battery, battery tray and support (including a hidden access nut which meant removing the wheel and the inner arch) and the air cleaning system. It took us the best part of a day to do, of which 3 hours to get a stupid clip back on which was both invisible and very difficult to access. I suspect most of the assembly was done at the factory prior to installing the engine in the car, with no thought for anyone trying to replace components later in the car’s life. I will never, ever buy a modern Citroen !! I’m archiving this video in my MX5 collection, though I believe this is not the same in terms of components on a 1994/5 NA8. Can you confirm ? Rob
Recently swapped mine out. Was going insane because I was having rough idle but only after starting the car after a short break (i.e grocery shopping) and it would resolve itself anywhere from 5 seconds to 5 minutes. Pulling out the ignition leads while the issue was ongoing I found the issue to be on cylinder 1 and 3, then it was obviously caused by one of the coils being defective.
My 1994 MX-5 had the same problem, I checked everything thinking it was the cat to the fuel injectors. Luckily it was just this Coil Pack, its super expensive but its worth it.
I viewed your video before attempting to replace the coil pack on my 99 Miata. Following your suggestions assisted in the removal of the pack. However, I used quarter inch drive sockets with the same inner diameter as the holes for those pesky plastic push in clips. Just push the socket over the end of the clip and pull the clip out. On the larger one in the back I used a 1/4" drive breaker bar attached to the socket to assist in reaching the push in clip.
I have had P0300, P0420, and P0455 on my 1999 for two years straight. I've had the evap system rebuilt for over $1000, and that did absolutely nothing, except prevent the car from misfiring for a couple weeks. I've replaced the spark plugs, wires, and now the ignition coil (with help from this video), and it has not misfired since, but the P0420 and P0455 came back. When it did misfire, it was only on startup and usually for just a few seconds before correcting itself. While misfiring, the ignition coil was not sparking on the spots that go to cylinders 1 and 4 (the left two). Once the misfire fixed itself, all 4 were sparking. Any advice is greatly appreciated!
The P0420 is a Catalytic Converter code and points to the cat performance being below the specified threshold. It’s very common on 1999 and 2000 Miatas. It’s also prevalent on other NB’s. I be chased it on some of my NB’s and it keeps coming back. The P0455 “Large Evap Leak” should be a little easier. Have you checked the rubber O-Ring on your gas cap? There’s a chance that it’s cracked.
@MiataMan Thank you very much for your reply. Yeah I actually bought a new gas cap with the ignition coil, but it didn't fit under the gas tank lid, so I actually just swapped out the o-rings. Then after I replaced the o-ring and the ignition coil, I cleared the engine codes. The catalytic converter one came back 7 miles later, and the EVAP one came back within 50 miles of driving. The car smells of gas really badly, especially right after filling it up. Again thanks for taking time out of your day to help me.
I have a 99 mx5 and I’m having a hard time reading the code. I tried the paper clip trick on the Ten and Grd in the diagnostics box but no codes flashing. Does anyone have a trick for reading the code without a OBD1 reader??? I think I have a ignition coil pack problem too. I’m idling low and now the check engine light started flashing a few miles after first coming on. Waiting for the part.
I was having warm start issues and recently cold starts issues too, the P0300 code showed up also, just changed the coil pack 6 warm starts and not a single problem or hesitation, thanks for your video man you helped me a lot
Update starts problems fixed thanks
I have the same code in my 97!
@@NealChauhan one year later still fixed
Got this done today and just wanted to thank you for the assistance. Mahalo!
You are welcome. Glad it helped 😎
Another great video.
I’ve moaned a few times about access when working on my 1.8iS, but having changed the water collector and thermostat housing on my son in laws Citroen C4 Picasso this weekend I’ll never complain again. An absolute nightmare, to get to just 4 heater and radiator hoses together with various electrical connectors, 3 bolts and a clip on the water passage from the engine block we had to remove battery, battery tray and support (including a hidden access nut which meant removing the wheel and the inner arch) and the air cleaning system. It took us the best part of a day to do, of which 3 hours to get a stupid clip back on which was both invisible and very difficult to access. I suspect most of the assembly was done at the factory prior to installing the engine in the car, with no thought for anyone trying to replace components later in the car’s life. I will never, ever buy a modern Citroen !!
I’m archiving this video in my MX5 collection, though I believe this is not the same in terms of components on a 1994/5 NA8. Can you confirm ?
Rob
Recently swapped mine out. Was going insane because I was having rough idle but only after starting the car after a short break (i.e grocery shopping) and it would resolve itself anywhere from 5 seconds to 5 minutes. Pulling out the ignition leads while the issue was ongoing I found the issue to be on cylinder 1 and 3, then it was obviously caused by one of the coils being defective.
I have been having I think the exact same issue for 2 years. It misfires only on startup and not every time. Sometimes fixes itself in a few seconds.
@@Cubemasterdid you ever figure this out?
@@Cubemasterdid you ever figure out what the problem was?
@corytv9689 Yes actually. I replaced the ignition coil, which turned out to be the problem. Stopped misfiring!
Putting a bracket with a bolt next to an opening in the cylinder. Genius idea.
My 1994 MX-5 had the same problem, I checked everything thinking it was the cat to the fuel injectors. Luckily it was just this Coil Pack, its super expensive but its worth it.
I viewed your video before attempting to replace the coil pack on my 99 Miata. Following your suggestions assisted in the removal of the pack. However, I used quarter inch drive sockets with the same inner diameter as the holes for those pesky plastic push in clips. Just push the socket over the end of the clip and pull the clip out. On the larger one in the back I used a 1/4" drive breaker bar attached to the socket to assist in reaching the push in clip.
Hi Steve, thanks for watching and for sharing some helpful tips.
Thank u for all your videos u helped me get the pivot bolt out on my 89 Miata! 😊🙏
I have had P0300, P0420, and P0455 on my 1999 for two years straight. I've had the evap system rebuilt for over $1000, and that did absolutely nothing, except prevent the car from misfiring for a couple weeks.
I've replaced the spark plugs, wires, and now the ignition coil (with help from this video), and it has not misfired since, but the P0420 and P0455 came back.
When it did misfire, it was only on startup and usually for just a few seconds before correcting itself. While misfiring, the ignition coil was not sparking on the spots that go to cylinders 1 and 4 (the left two). Once the misfire fixed itself, all 4 were sparking.
Any advice is greatly appreciated!
The P0420 is a Catalytic Converter code and points to the cat performance being below the specified threshold.
It’s very common on 1999 and 2000 Miatas. It’s also prevalent on other NB’s. I be chased it on some of my NB’s and it keeps coming back.
The P0455 “Large Evap Leak” should be a little easier. Have you checked the rubber O-Ring on your gas cap?
There’s a chance that it’s cracked.
@MiataMan Thank you very much for your reply. Yeah I actually bought a new gas cap with the ignition coil, but it didn't fit under the gas tank lid, so I actually just swapped out the o-rings. Then after I replaced the o-ring and the ignition coil, I cleared the engine codes. The catalytic converter one came back 7 miles later, and the EVAP one came back within 50 miles of driving.
The car smells of gas really badly, especially right after filling it up.
Again thanks for taking time out of your day to help me.
Some say, he's still trying to remove the coil pack....
I have a 99 mx5 and I’m having a hard time reading the code. I tried the paper clip trick on the Ten and Grd in the diagnostics box but no codes flashing. Does anyone have a trick for reading the code without a OBD1 reader??? I think I have a ignition coil pack problem too. I’m idling low and now the check engine light started flashing a few miles after first coming on. Waiting for the part.
If you have a 1999 MX5 it will have an OBD2 port next to the interior fuse box. The 99-00 MX5’s were well know for bad coil packs.
Can you give me the part number for 1999 Miata ignition coil
What tools did you use sizes and all pls thanks
HOWdy Miata-Man,
WOWSER - My 1993 Coil-Pak was 100% easier to Remove & Replace !!!
COOP
...
Way easier on a 1.6L car 😎