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Old 08-29-2018, 02:40 PM   #1
Wbporkypig
 
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Throttle issues

Ok so I got an 09 yaris with some throttle issue. The car runs fine while idle and revs fine to till I start to move. When I try driving it will go but has trouble accelerating, check engine light flashes when I get up to speed. Any ideas
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Old 08-29-2018, 02:45 PM   #2
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Quote:
Originally Posted by Wbporkypig View Post
check engine light flashes
Get it checked for stored codes. Without doing so, all you'll be getting is guessing game advice.


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Old 08-29-2018, 02:49 PM   #3
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I did that and it told me cylinder 3 and 4 were misfiring, I've already replaced spark plugs. Car ran a lil smoother but the check engine light still there and acceleration problems still there. I will have my friend come over later to check the light again.

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Old 08-29-2018, 02:50 PM   #4
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Fault coil packs. Spark plugs are not usually the cause of misfires. Coils are.

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Old 08-29-2018, 02:53 PM   #5
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Ok after I hook computer up to it if it still says misfire I'll replace the coils

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Old 08-29-2018, 02:57 PM   #6
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You can verify by changing the position of the coils. Swap cylinders 1 and 2 for 3 and 4. If the coils are faulty the codes will follow the bad ones.

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Old 08-29-2018, 02:57 PM   #7
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Ok thanks I'll let ya know wut happens lol

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Old 09-03-2018, 11:01 AM   #8
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Ok so I hooked up to the computer and got p0300, p0301, p0302, p0303, p0304, and p0172. I know what they all mean any easy fix. All cylinders misfire and random misfire and it's running rich
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Old 09-04-2018, 08:12 AM   #9
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what are your fuel trims reading?
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Old 09-04-2018, 02:05 PM   #10
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Did you clear the codes before swapping the coils around?

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Old 09-06-2018, 05:15 PM   #11
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Idk about fuel trim and I did not swap cause now it's saying misfire on all 4 cylinders

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Old 09-06-2018, 05:16 PM   #12
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Should I still try swapping

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