2012 Toyota Yaris Support Question
2012 Toyota Yaris Support Question
Find answers below for this question about 2012 Toyota Yaris.Current Answers
Answer #1: Posted by Odin on July 9th, 2017 4:12 PM
Odin
Member since:
April 10th, 2010 Points: 41,236,690
Member since:
April 10th, 2010 Points: 41,236,690
The following answer by notsnot at http://ask.metafilter.com/192151/Why-would-the-AC-make-my-car-accelerate-rough should be helpful--but you may want to review as well the other answers on that page:
The A/C unit requires no small portion of the entire power output of your engine at idle - we may be talking about up to 30%. If part of the A/C system isn't working right - worn out compressor, low freon charge, who knows - this power requirement may be even greater. Combine that with an older, more tired engine (or at least, one that might need plugs and a fuel system cleanup) and the switch from "idle" to "time to accelerate" is quite a change. Ergo, see if a fuel system clean out (the easiest change) works, first.
The A/C unit requires no small portion of the entire power output of your engine at idle - we may be talking about up to 30%. If part of the A/C system isn't working right - worn out compressor, low freon charge, who knows - this power requirement may be even greater. Combine that with an older, more tired engine (or at least, one that might need plugs and a fuel system cleanup) and the switch from "idle" to "time to accelerate" is quite a change. Ergo, see if a fuel system clean out (the easiest change) works, first.
Hope this is useful. Please don't forget to click the Accept This Answer button if you do accept it. My aim is to provide reliable helpful answers, not just a lot of them. See https://www.helpowl.com/profile/Odin.
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