INFO: Coil-Packs
 

Hey guys, after searching around for information on coil-packs, I've decided to
make a thread with coil pack info.

I will edit this section after we collect and verify information.

So,

1Coil pack testing if you get a code/misfire
ohm tester? tested in series, car start up, car warm, car hot

2Coil pack swaps
K20 coil-packs, rsx coil-packs compatibility, 00-01? 02-04? etc difference?

3Actual technical information
dimensions, how many ohms/amps, heat ranges,


Thanks for any help and input on this subject.

FIRST!

2000-2001-2002-2003
30520-PCX-007 001 004 COIL, PLUG HOLE $89.86

2004-2005
30520-RRA-007 001 004 COIL, PLUG HOLE $44.85

2006-07
30520-PZX-007 001 004 COIL, PLUG HOLE $66.76

Couldn't find info on 08+

Pretty sure thats when we started to use small hamsters to drive the engine -_-

why is the 00-03 more expensive?

better engine

[QUOTE=Opc,Feb 5 2011, 09:50 PM] 2000-2001-2002-2003
30520-PCX-007

great job guys, thanks for the extra info. So rsx coilpack, now will any civic coilpack work as well,

I'm thinking some kid is gonna need some test packs, or something, this could be a good way to source a pair. esp if its off a civic.

Acura RSX 02-04 RSX Type-S
05-06 RSX Type-S
02-04 RSX: 5-Speed
05-06 RSX: 5-Speed
02-04 RSX: Auto
05-06 RSX: Auto




RRA-007 CP - price $60

I'm using the 04-05 coilpacks on my ap1, I've always heard that 06+ coils are not to be used on ap1's. The 04-05 coils are supposed to be an upgrade to the ap1 version, mine run great but I have no proof that they provide any definititve gain.

yea that's kinda what i wanna take care of with this thread in its definitive form, cut the bullshit out.

for example. why are 04-05 better? anyone ever rip apart a 00 or 04 and see what gauge the wire is, maybe thickness of insulator, etc..

also if anyone has any blown coil packs, send me them, I'll dissect them, metallurgy, etc

i have seen ap1 coil packs fail and take out a low mileage engine to a local guy, hence why i have been hearing more than one person suggest to get 04-05 ap2 coil packs for your ap1 (2002 is my car) motor.

just a thought. . . .

From what I have read MY04-05 are not better but popular because they are like 1/2 the price of other MY years (because it interchanges w/ other cars).

I have read MY00-01 performed best under boosted conditions (stock for stock).

There are posts saying MY06+ will work for prior years also but the HELMS says not to do so. I would think it would have to do with the DBW system.

I, myself have replaced my project car's MY02 CP's w/ MY04-05 and it runs perfect.

If you want to do a fair comparison I would think you would have to buy one of each CP brand new so variables are reduced. It's the only proper way to do a fair comparison IMO.

the anectdotal evidence I've read was people with boosted setups were geting misfires with Ap1 coils but not with the RSX coil, which turns out to be the same as the 04-05 S2K coil. Whatever that is worth. I would use the 04/05 coils as we know they work fine, and they cost so much less than the others.

Perhaps the 06+ coils are protected to reduce electrical noise even futher given the DBW system ?.

One thing about the S2K for sure, when it has a part that is used/shared with other Honda models the price difference is huge, when you need a part that is specific to the S2K the price skyrockets and approaches ridiculous at times.

I like where this is going.

All I know is that Honda reviewed the entire car and made thousands of incremental improvements with the 2004 model, so if Honda changed them, there was some reason to do so. That, plus the anecdotal evidence here.

Interesting thread.

Most of the info I got was based on reading from the racing forums and the FI forums. A lot of people state that "it works" and usually the thread ends.

This is a useful thread. thanks

So if I have an MY01 ap1 [struggling with misfire code]. which coilpack replacement would be better ? RSX or s2k 04-05 ?

The 04-05 packs are the same as the RSX

average lifespan of the coils is close to 100k miles, they seem to fail around 90-100k based on postings on here, but you'll always get some that go further than that.

I heard ap2 coilpacks in general were best ( no specific year). I also heard people pushing higher psi on ap1 coils were getting missfires at high rpm. I also heard the k20 coil packs were the same as ap2 packs. With that being said, I was going to swap the coil packs from my 08 si to my 03 s2k so when I go boost down the road i won't have to worry about it. Good idea or no?

there is a difference in ap2 coilpacks, 04-05 are one model, and 06+ are different models. It's been said that 06+ coil packs are specific to those years, you can't use an ap1 coil or 2004-05 ap2 coil on 06+ ap2's , but I don't know if they are backward compatible where 06+ can be used on previous years. I've read that they can't be used so unless someone knows that they can be used I'd stick to the 04-05 ap2 coil.

Considering what coil packs do, I can only imagine that the 04+ were revised for efficiency/reliability, and maybe the 06+ were revised to work with the ECU and DBW system?

I guess that kinda narrows down my missfire code with 170k miles on mine :D

pretty good chance of that being a coil , at that mileage they don't owe you a dime, nice run with them. :thumbup:

I've sourced a 00 coil-pack, a 04, a rsx, and a 06, once i get them all i will setup a test bench/test system, and see if we can get some more awnsers.

I myself have a 00, with the misfire code, which looks like its the coil-packs.

More info to come.

Good luck on the try :) I would also like to see some pictures with all those coil packs sitting next to each and the part numbers :]

To the OP, just want to say thanks. :)

np, any thoughts for my next subject?

This was a very useful thread. thanks to the people who shared and participated.

Also I recommend the moderators that this thread should be stickied and moved to whatever forum category that is appropriate for the following reasons:

-Many members have experienced misfiring issues
-The responses in this thread are very objective and the members who have participated are very logical and informative
-Coil packs is a common maintenance topic.


-Ri.Le

Test tsx vs okada, supposedly the same

And rsx vs 04 is a waste, same part #

yea i want to know whether it's true as well

-Ri.Le

So anyone know for sure if 06+ coil packs will work on ap1's?

Sadly I think these prices have double since.

The 00-03's cost ~$160-170 now and the 04-05's cost ~$80-85.

Edit: forget it, you can still get them for that price online.

Autozone will sell you an exact 01' match for $95. It's a denso part in a duralast box. Just give them a day to ship it from their hub to your local store.

I just got 4 04 coilpacks for a buddy for ~230 brand new from honda, f paying autozone 100 for 1

Can anyone provide detail on how to test the coilpack resistance to see if its not running correctly? I'm not the best with electrical issues/testing, so is there a way explain how to test with a multimeter?

For instance, what is the resistance of a properly working coil and through which parts do you test (ie - inside spark plug boot, certain "blades" on the connector).

Any insight would be helpful.

I'm curious as to why Honda sells the '01 coils for $89 a peice, and the '04 for $45? I'd really like to know what change they made internally. If you go by '01 coil prices, the autozone coil is a good deal being it's available the next day. They do sell a +04 equivilant for 90ish which is a ripoff.

I wish I would have known how much cheaper the newer coils are.

You can't really test a coil pack without a coil tester. The transistor in it isolates the coil from your meter.

Just wanted to say ... there is some great info about coils in this thread. Also if anyone needs any... I have an extra set of 2006 coils with only 18,000 miles on them... shoot me an offer..

I know that any part the S2000 shares with other higher volume Honda models the price drops immensely, but parts that are specific to the S2000 are usually twice the price and crazy expensive. AFAIK the 04-05 coils are also used on the RSX and perhaps other moels, and I believe that is the reason they are much less expensive than previous models. I'm running the 04-05 coils on my ap1.

I have a 2000, stock motor, no bolt-ons. It had around 92k miles when I had a blinking CEL, multiple misfire.

2 of my coil packs (cyl 3 and 4 to be specific) went bad.

Not sure if these were the original coil packs with the motor or not since I bought the car second hand.

Replaced the two bad ones with coil packs from a TSX (K24A2 I believe?) and my car has been running fine, no CEL.

OPc, are you still looking for bad coil packs to dissect and inspect? I can send you the ones that went bad.

Great thread guys, interested to hear about testing results. I found some AP1 aftermarket coil packs for $18 shipped on eBay, but am a little hesitant to purchase them. After reading this thread I searched on the 04-05 coil packs and found an auction for genuine OEM Honda ones for just under $25 shipped. For that price I think I can afford to try those and see if it solves my idle issue (no CEL).

http://cgi.ebay.com/ebaymotors/HONDA...s#ht_719wt_799

*edit*
purchased 4 and total with shipping was $86.29, less than 1 AP1 coil pack from hondaautomotiveparts.com.

someone test!!! :photo: :photo:

To date, I have found 3 bad coil packs in 9 years of working on the car.

1 was in an AP1 with 140k.

Second one was an ap1 with 160k or so.

Third one was in the same car with 160k. So 2 packs in one car.

I have coils to disect if anyone wants them.

On left, AP1 coil.........................................on right, 2004-2005 coil. Note visual difference.

https://www.s2ki.com/s2000/uploads/g...282_298236.jpg

Looks like the coil winding is shorter. I wonder if they went with a smaller diameter wire, or a stronger magnet in the core? Could also be the FET/IGBT is faster. :ponder:

To add to Billman's list, my coil didn't fail until over 100k, and I had a plug back out which probably took it out much sooner.

Neat. If no one else wants it, I could take apart and photograph one of them (preferably an AP2 coil pack).

doh.

just replaced with ap1 coils.

140k miles.

If the question is if it runs then yes it does. I have an ap1 MY 01 and just put some from a 2007 before I read this thread. I also have a cel for misfires. It runs BUT it feels like the car is driving worse than before and I still have the cel on.

There is a warning in the service manual...."do not use 00-05 coils in a 06-09 engine."

I would not use 06-09 coils in an early car either.

Would it be ok to mix and match the coils? Say use 3 from a 2002 and 1 from a 2005? Ive got one bad and i would rather buy a cheaper 04-05.

I have a 03 ap1 and my coilpack went at abt 139k miles. changed it to a 04-05 coilpack and no problems ... after that.

hi all,

just a little fyi. my 03 k24 accord had 2 coil packs fail on me. i was desperate and since my s2k motor is being rebuilt i ended up using my ap1 coil packs in the accord. no issues and its been a month now. Im assuming any k24 coil pack can be used in s2k. correct me if im wrong

I have a 2002 AP1 at 62k miles and the ignition coil pack in cylinder 1 went bad. I replaced it with the 2004-2005 coil pack and it works fine.

hey guys any thoughts on this coil packs? BECK/ARNLEY Part # 1788427 ordered from RockAutoParts $192.31 set shipped i just got it delivered here today but didn't open yet due to my CEL not coming back yet.(misfire issue)

EDIT: I opened the box just to see what the coil packs looks like, and it looks like ap2 coils.. but the catalog says its for HONDA S2000(2000 - 2003)

Attachment 101823

from Billman250's photo comparing ap1 and ap2 coils...

Reviving this thread in hopes of getting more info.

What other info do you need ? .

04-05 coils are less expensive than 00-03 coils and perform equally well or better, do not use 00-05 coils in an 06+ s2000. That's about all that is known.

Testing was to be done, curious if it ever happened and what were the results

There are some chinese made coils hitting the market now - surprise surprise - at least one member had misfires on his car from using those coils and he had to purchase Japanese made Honda coils to correct the issue. Hopefully your's aren't the same.

I have an '01 with 123,000+ miles on her. I replaced a coil pack about a year and a half ago when I got similar symptoms. Cleared up the issue back then.

A couple weeks ago I think I lost another one. I'm getting misfire codes thrown and it runs like it only has 3 cylinders. Getting 1399, 0300, 0301, 0302, 0303 & 0304 codes. I am hoping I didn't do any long-term damage because I couldn't stop when it began to act up. When I got home, the O2 sensor was glowing red, so I know where the unspent fuel was being ignited. Anyway, thanks for this thread. I'll post whatever information I can about the process.

Hopefully I only have 3 potential suspects. :)

I'll add a Bit to this thread. I was majorly into K's (8 different motors, 3 built) before plunging into the S2000. Stock 02-06 base and S coils are all the same on the RSX, 02-05 EP3 SI are the same, 04-08 TSX are the same, and 06-11 FG2/FA5 are the same. If you look them up online, through HONDA or ACURA or even advanced/autozone/nape/etc, they all show different part numbers, not sure why, BUT they are all the same. All have the same number/name, and physical look on them, that I have seen. Unsure about Accord/CRV k24's. All have been proven on 400, 500, 600, 700, 1000, etc HP K20s/k24s. Also, out of all the K's I have had (albeit, non-turbo'ed, I'm an all-motor guy), I have never had a coilpack fail. Many of my motors were well over 100kmi.

Oh, and sub'd.

Yep. I have 1 K20 coilpack (looks just like 04-05 s2k) and 3 MY00 coilpacks. No problems in 3000 km, runs just fine.

Has anybody used these?

My link

I was looking at the packs you can get from O'reilly's which are "Import Direct" brand for something like 60 bucks as apposed to the 100 bucks Honda wants and when I got home I was looking around and found these didn't know if they were crappy China ones or some manufacturer that makes parts from Honda. Any advise would help i need to get back on the road and am strapped from cash.

Just replaced my coil packs.

Confirmed: For a year 2000, Duralast brand ignition coils (Part: C1265) from Autozone have literally the same part marking as the factory Honda coil packs. Part marking says Denso but in a Duralast box. $68.99 each, in stock for me, otherwise they order for store pickup 1 day later.

Printed on the housing of the part that came out of a Duralast box:
099700-0430
DENSO
Made in Japan


Same as the coil packs I pulled out from the car.

Is that 04-05 ap2 coilpacks or k20 coilpacks?

Woah, thanks for the tip. I had a flashing CEL that I traced to the cylinder 4 coil. I thought for sure it was going to be at least two days and $100+ until I could get an OEM replacement, but my local Autozone had one of these around. Markings are the same, and it looks exactly the same. Solved the problem in one evening and the car runs better than before.

i have read this thread and others but i have not seen any real proof that ap1<ap2 coil pack. my main concern is that ap1 revs higher then all other hondas, so reason for its own specific coil. i have read a lot of people state that the okida coil pack is a tsx coil? tsx is drive by wire so does that mean the 06 ap2 coil packs would work better in ap1 and ap2 v1 cars?

my ap1 old CoP
1-2 pin ohm tested
cylinders list 1-4
1.194Ω
1.180Ω
1.190Ω
1.192Ω

ap2 04/05 new denso coil on plug
1.146 or 1.164 i forgot..
changed the one with highest resistance even with No CEL.

result: i noticed less misfire accured during cold startup, other than that i dont feel any differences in gain but i felt a bit of torque after 4k rpm. perhaps if i change all of them it might restore lost torque.

idk ap1 a new coil's ohm, im not gonna bother buying a pricy ap1 CoP
does anyone know?

If you change one pack, on most cars it tends to kill the others, or the others tend to follow. Not always but I see it happening a lot.

Coil Pack Expected Life?
 

Hi guys. I'm a new S owner ('06, 50k miles). My previous car was an '04 RX8. I would routinely replace the coil packs on the RX8 every 40k miles (rotary fires 3 times per revolution). I've read in this forum that the coil packs on an S usually last in excess of 100k? I would prefer to replace them before they fail, any recommended interval? Thanks in advance.

There's really no interval -- I've noticed through my small sample size of 2 Hondas that they do average about 100k miles or 10+ years in CA weather until one of them starts acting up.

On my s2000, after 100k miles, I had a small, hidden misfire that did not even register with an error code/CEL, so diagnosing it wasn't easy.

On my Accord, after 100k miles, I had a major misfire, and an easy diagnosis.

Just wait until you have visible symptoms, otherwise it's a waste of money.

Anecdote time? I replaced one failed coil pack (cylinder 4) two years and 15k miles ago. Used the C1265 from Duralast/Autozone that I learned about from this thread. Didn't bother with the rest. Car has run great. It's your car, replace whatever parts you want, but accessing the coilpacks is easy. I wouldn't throw away working ones, but it might be a good idea to keep a spare.I took some notes when I was shopping for coil packs - this is for 00-05 cars, 06+ have a different coil pack.

Denso is the OEM supplier.

OEM Part Numbers

2000-2003: 30520-PCX-007 ($103 from Majestic Honda)

2004-2005: 30520-PNA-007 ($52 from Majestic Honda) - or - this is the same as the coil pack/part # for the RSX and a dozen other Hondas, probably the easiest to find. Works great in all pre 06 S2000s.

Denso part numbers:
#673-2301 = RSX/04-05 S2000 coil part # ($40 from Amazon) = 30520-PNA-007

#673-2300 = AP1 coil ($93 from denso, $80 from Amazon)

As slowcrash mentioned, Autozone weirdly stocks the AP1 Denso coil pack - their internal item # is C1265. It's sold in a Duralast box but it is made by Denso for AP1 and says "099700-0430” - DENSO - Made in Japan - on the side, just like the 13yo coilpack I pulled out of my 2002 s2k. It was $70 and works beautifully.