Ignition coil part #

[TheHomeBuilder]

So finally got around to taking a look at the coil packs. I changed the spark plugs on the passenger side and took a multi-meter to the coils I took out. If anyone knows anything about the resistance these coils should have, that would be great. I tested and wrote down every connections ohms reading but not sure what values are relevant. I have 2 pages of handwritten notes with all the values. It would also be helpful if I had a coil I knew was bad. So anyone know anything about electronics/ohms/resistance and coils? Cause I know nothing


Anyways my findings:
The Denso 673-1303 is identical to the 90919-02259 (08/2003-05/2005). It looks like they might even be made in the same factory and the Toyota logo is milled off. *See attached picture (PS the boots are partially removed)

There is something different about the coils on my 03 LX 90919-02230 (01/1998-08/2003). The wiring/circuitry is different as I got completely different results with the multi-meter on resistance and what connections make a completed circuit. The new 90080-19027 is again wired like my original coils but unlike the Denso 673-1301 or 90919-02259.



I’m not sure if I make any sense on all of this, or if it’s even worth putting time into.

BTW if anyone wants to buy a new, never used Denso 673-1303 or Toyota 90919-02259 Let me know. I’m going to be sticking with the 90080-19027.

 

[Mike NXP]

Hey maybe I missed it but has anyone found a part number to replace just the rubber boot with oem ?

I was on the verge of buying new coils since that Decatur Toyota is having huge discounts but just can't bring myself to replace them if they aren't broken. I figured changing plus and rubber boots would be worth it though.

 

[bamabrock]

Hey maybe I missed it but has anyone found a part number to replace just the rubber boot with oem ?

I was on the verge of buying new coils since that Decatur Toyota is having huge discounts but just can't bring myself to replace them if they aren't broken. I figured changing plus and rubber boots would be worth it though.

Denso 671-8184 Ignition Wire Amazon product ASIN B00FRMAL8M

 

[Lion]

part number to replace just the rubber boot with oem

Cap: 90919-11009

 

[Mike NXP]

Cap: 90919-11009

Thanks, I assume the denso option I also a good choice . I noticed the denso comes with another circle rubber part in addition to the boot . Hmmm

 

[Mike NXP]

Alright time to drop in on some coils and just wanted to recap on my findings after pawing through the forums and parts stores.

This is per my 2002 cruiser

Toyota OEM - 90919-02230
Approx $100 per

Denso -673-1303
From denso direct - $60 per.

Same denso part number from rock auto -$55

>>I'm a sucker for OEM and preventative maintenance but it seems the conclusion on there is that if you order a legit denso part it will be the same item without the Toyota branding

I think in this instance I'm going to go with Denso because it does appear to be the same part. On the flipside my coils aren't failing so maybe I just replace plugs , install new rubber boots , and stick with the original coils. Not sure the best way to proceed.

Original coils going on 220k with no issues. Worth replacing ? Just spend the extra coin and get OEM or am I just paying for branding ?

 

[trdcorolla]

Alright time to drop in on some coils and just wanted to recap on my findings after pawing through the forums and parts stores.

This is per my 2002 cruiser

Toyota OEM - 90919-02230
Approx $100 per

Denso -673-1303
From denso direct - $60 per.

Same denso part number from rock auto -$55

>>I'm a sucker for OEM and preventative maintenance but it seems the conclusion on there is that if you order a legit denso part it will be the same item without the Toyota branding

I think in this instance I'm going to go with Denso because it does appear to be the same part. On the flipside my coils aren't failing so maybe I just replace plugs , install new rubber boots , and stick with the original coils. Not sure the best way to proceed.

Original coils going on 220k with no issues. Worth replacing ? Just spend the extra coin and get OEM or am I just paying for branding ?

I bought Denso's when I replaced my coils a few years ago. If I remember right I started peeling off the Denso sticker on the coil (was curious what was under it) and it was a Toyota sticker under it, so I stopped pulling it off and pushed it back on.

 

[Elle Rav4]

So finally got around to taking a look at the coil packs. I changed the spark plugs on the passenger side and took a multi-meter to the coils I took out. If anyone knows anything about the resistance these coils should have, that would be great. I tested and wrote down every connections ohms reading but not sure what values are relevant. ... The Denso 673-1303 is identical to the 90919-02259 (08/2003-05/2005).

A thread over in ToyotaNation.com was recently asking the same questions about this same Denso Coil. While trying to suss this out, I happened on this forum and TheHomeBuilder's post above. For what it is worth:

The net in general says that one cannot measure the resistances of the primary and secondary windings on newer vehicles (circa 2000 and later). The reason for this is because newer vehicles use a "Direct Ignition" system, a.ka. "Coil on Plug Ignition System" or "COP" for short. The COP has an internal transistor that switches the primary winding off and on. The presence of the transistor makes accessing the ends of the windings, to take resistance readings via the connector's pins, physically impossible.

As interested, see Denso ignition coil resistance ohms? - https://www.toyotanation.com/threads/denso-ignition-coil-resistance-ohms.1779594/, post #1 and post #9 especially. Post #9 includes several illustrations to explain things. Or this wiring diagram for a certain, circa 2003 Toyota all by itself may clear up a lot: