Quote:
Originally Posted by Claraine
Hi Mustang67408-
While I haven't been able to go to Auto Zone yet, I actually just got off the phone w/ the mechanic who did my tune up b/c I knew that they replaced my spark plugs. They told me that they used AUTOLITE (eek!). So, could that be a serious problem? What is difference between NGK/DENSO and BOSCH, DELCO, or AUTOLITE? I'm not at all a car saavy person- I would think that those mechanics knew what they were doing!
-Claraine
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Toyota has a patent on their spark plug heat ranges. NGK and Denso are the only ones that will match it exactly.
I have had problems for years with Bosche (a GERMAN PLUG) and most (AMERICAN plugs) in JAPANESE vehicles.
This is just my opinion from many years of experience on toyotas. (23 yrs to be exact).
Before you can condem the plugs, you need a CODE. That will tell you which direction to go. They may be fine, but after finding the code, they would be one of the first things i replaced. I believe in 100% factory parts.
Many people use NON TOYOTA brand plugs and they work

, I PREFER NOT TO as they do run better with factory parts. Most of those plugs are LESS EXPENSIVE and thats why people tend to use them. They just dont know where to look for Toyota parts at reasonable prices. Those Bosche .99 cent plugs are at that price for a reason.
There are alot of good mechanics out there, but are they TOYOTA trained?, do they know the little inside secrets and flaws about toyotas?
Some might, but most do not.
It is alot of work to learn everthing about 1 brand. I am still trying to learn about TOYOTAS and try to learn something new everyday.
I can't imagine how independants can try to learn about many different car brands.
Like I said get a code first, the plugs may be ok (for now).
Then we can try to diagnose it from there.
If you don't like my answers it is ok, I understand

Diagnosis over the internet is very challenging.
Maybe someone else will be able to help that has had a similar problem.
Let us know the code
