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Ron Z.
Ron Z., - Toyota Tech -
Category: Toyota
Satisfied Customers: 14508
Experience:  18+yrs experience. State Inspector and Toyota Diagnostics
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Toyota Avalon: My Wife inherited her fathers car a 17 year

Resolved Question:

My Wife inherited her fathers car a 17 year old Toyota Avalon. Last year there was problems with the exhaust sytem and we took it to a muffler shop instead of the dealer to get it fixed including the catalytic converter. Lately the car has been sluggish and the little icon that means get it checked came on. We took it to the dealer and they say that the spark plugs need to be replaced, the fuel injection system needs to be flushed and we need to replace the front pipe (including the catalytic converter)...$1400.00!! We are trying to figure out whether we should take it back to the muffler shop or go along with the dealer. The car only has 120,000 Kilometers on it
Submitted: 1 year ago.
Category: Toyota
Expert:  Ron Z. replied 1 year ago.
Hello! Welcome to the site! Thanks for coming! I'm Ron Z. I'm here to provide as much information and insight as I can, to best answer your question.

From what you are describing here, this can be a few things. First, having the Diagnostic Trouble Codes (the codes stored in the computer that are setting the Check Engine light) would help a ton in the diagnostic flow here. These codes help to better pinpoint that actual system that has the fault and will better pinpoint the best way to correct the problem. If you do not have these trouble codes, then I can try to give as much insight with the information you've provided.

First, this very well could be a problem with spark plugs. Toyota recommends they are replaced at every 96,000km. So if they haven't been replaced in a while, this very well could be a possible cause. On this vehice a very common problem is a faulty Ignition Coil as well. These coils sit on top of the spark plugs and when faulty will creat a cylinder misfire (this is where those trouble codes would come in handy!) and produce loss ofengine performance. So these should be tested as well.

As for the Fuel Injection system needing a flush- this isn't very common, but if the vehicle had sat for a long time, or only made short trips, or wasn't used that often, this "could" play a role in it. Whether or not it is actually a reason for the problem... could go either way.

As for the Converter- if you had the original replaced, and they used a "universal" or a "low quality" Converter, this could also be a contributor of the problem. A universal or low quality converter doesn't meet Toyota specs and will usually fail or get "clogged" in a short amount of time which can definitely lead to engine performance issues. The reason why the Dealer needs to replace the Front Pipe, is this is the "correct" version that "should" be installed. The Converter is built into a part of the front pipe assembly.

As for the price- I'm seeing the plugs sell for around $3.50 each (you need 6) and the labor time guide calls for just about 2 hours to complete the job. The Injection Flush is usually a set price as a service, and will vary from shop to shop, but the average is around $125-$175 for the service. The Converter (the correct version as part of the front pipe) sells for around $400 or so. The labr time guide calls for just about an hour to complete the job. Labor rates vary from shop to shop, so what you pay for labor will effect the botXXXXX XXXXXne. For a job of this type, a "fair" labor rate can by anywhere from $85-$125 per hour. SO, the estimate you were given does seem a little high.

Again, having those trouble codes would help us eliminate un-needed things like the Injector system flush or the need for a new Converter.

Please remember the website WILL NOT automatically compensate me with a part of your deposit or from your subscription WITHOUT YOUR RATING! Please use the Rating System and *Rate My Service* if the information/advice I supplied has helped you. If you have any more questions, use the "Reply" tab – I'm always happy to answer follow-up questions! Follow-ups are always FREE! Even after you rate! Thank-you!


Customer: replied 1 year ago.


Ron is it possible that the front pipe would cost more in Canada?

Expert:  Ron Z. replied 1 year ago.
There is a strong chance of that, yes. However, there should be a white sticker/label under the hood towards the front. It says something in the way of "This vehicle conforms to California Emissions..." - if it DOES have California emissions, then you can order the pipe with Converter from somewhere online like say, AdvanceAuto.com and have it installed. If it does NOT have California emission (and it will say something besides "California" - ours says "Federal"), you'll need to buy locally (Toyota shipped CA Emissions vehicles ALL OVER the place, so there's a good chance yours might be. I'm here in New England on the East Coast US, and 98% of Toyota's here ARE CA Emissions).
Ron Z., - Toyota Tech -
Category: Toyota
Satisfied Customers: 14508
Experience: 18+yrs experience. State Inspector and Toyota Diagnostics
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