Best thread title ever bro.
Suggestion ----> repost in the correct section for your truck year.
http://www.toyota-4runner.org/
1st Gen
2nd Gen
3rd Gen
4th Gen
5th Gen
etc.
You will get FAR FAR more views / responses.
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ALSO ... your description is WAY TO VAGUE.
Here is what you should put in your new thread:
* What are the actual engine codes? (local parts stores sell code readers for $20 - buy one)
* What year?
* How many miles on the ODO?
* Original engine? (eg not a rebuild)
* When did the problem start / how long has it been going on?
* Loss of power?
* Does the engine overheat?
* Any smoke out the exhaust?
* If so what color?
* Did you replace the plugs and wires with OEM TOYOTA PARTS (NKG for example)? {THIS IS VERY IMPORTANT}
That would help us a lot.