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Did a timing job on my 1990 LS400 which included changing
the ignition coils, the “new” NGKcoils went out not even two weeks into driving it. Didn’t realize it was even the coils until a couple of weeks of tinkering with it. Felt like gas issues when they went out while driving it. Would start and immediately shut itself off. Turns out if the ECU sees a bad/no signal back from the coil it kills the injector circuit. Codes 13, and 15. Changed the coils out for some Toyota ones I had sitting on hand and now she runs great. Only have code 13 now.
Owner didn't want to spend $140 on a coil, which is good value lMO since it would last until the car is scrapped but not my vehicle. 90919-02197 in a Camry same part as in the LS.
The coil failed without warning (car was parked luckily) and showed no signs of cracking it looked perfect. Just died.
While counterfeit NGK plugs are common, I haven't heard much of counterfeit coils. RA isn't an authorized NGK distributor; hopefully, they're getting their stock from authorized sources. But in today's economy, one never knows.
11740077[/url]]I have NGK coils and Denso wires that were purchased on Rock Auto for a total cost of ~$160.
The OEM parts cost $212 for the wire set and $95 dollars for each coil pack. A total of ~$400.
My question is would the engine run better with the OEM wires/coils?
Volts are volts.
Both the coil and the wires are easily measured with a volt meter.
If you test the parts and they are functioning properly it’s not a matter of performance but longevity.
A genuine part will typically last twice, if not 3x, longer than an aftermarket equivalent.
You still end up paying the “$400” over a period of time with aftermarket parts.
An important factor is how long you're going to keep the car, especially considering longevity of the part, as bradland said
The OEM parts are often (if not always) better. However, if you're only going to have the car a couple more years, then putting on aftermarket parts isn't such a bad idea - as long as they test fine, and the car runs well with said parts
If you want to hold onto the car for longer, the OE parts are probably worth the investment
All of this also considering personal financial circumstances