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Ted Ritter
Ted Ritter, Toyota Master Tech
Category: Toyota
Satisfied Customers: 4383
Experience:  Toyota Master Tech, ASE Certified
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I'm having issues with a low/rough idle, around 200k. toyota

Customer Question

I'm having issues with a low/rough idle
JA: How many miles are on the car? Have you checked the spark plugs?
Customer: around 200k. toyota tacoma 3rz-fe
JA: What is the model/year of your Toyota?
Customer: probably could use new spark plugs
JA: What year is your Toyota?
Customer: 1997
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: just injector cleaner so far
JA: Anything else you think the mechanic should know?
Customer: just got engine codes p0300 and p0303, p0100,p0110
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the Toyota Mechanic about your situation and then connect you two.
Submitted: 1 year ago.
Category: Toyota
Expert:  Ted Ritter replied 1 year ago.

Hello, thanks for posting

the engine has a misfire on the #3 cylinder, the other codes may not be relevant at this time but they referto a mass airflow sensor problem, possibly. Remove the coils( it should have 4 coils, one for each cylinder) these are known to cause misfires, remove the spark plugs and if the look burned or oily replace them, if the #3 has excessive oil there may be a ring problem but let's not go there now, replace the spark plugs and recheck, if the engine still idles bad replace the 33 coil and let me know if that helped.

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