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Corolla; engine stumbles and wont rev up on anything over ~20% throttle

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Old 01-30-2009, 06:10 PM
  #31  
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Default Re: Corolla; engine stumbles and wont rev up on anything over ~20% throttle

Is it not throwing codes or anythying? Does it idle fine? Have u checked your fuel filter? Whats happening whit it hits 20%? Get us video. My family has had probably 15 corollas and the only time they did this was when they had a bunk fuel filter.
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Old 01-30-2009, 06:17 PM
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Default Re: Corolla; engine stumbles and wont rev up on anything over ~20% throttle

Originally Posted by TTC
Is it not throwing codes or anythying? Does it idle fine? Have u checked your fuel filter? Whats happening whit it hits 20%? Get us video. My family has had probably 15 corollas and the only time they did this was when they had a bunk fuel filter.
Owned 3 off this generation and all were they same problem fuel filter.
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Old 01-30-2009, 07:00 PM
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Default Re: Corolla; engine stumbles and wont rev up on anything over ~20% throttle

Originally Posted by enikolayev
Map sensor and TPS seem to be working ok. next to check O2.

Have an hour before i have to go back to school and work on a project.
It takes almost no amount of moisture to cause hell in a distributor. I missed that you already changed those parts, but my advice still stands about spraying it with something that displaces moisture.

You could also start testing ---- rather than throwing parts at it. Cheaper anyways.
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Old 01-30-2009, 07:41 PM
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Default Re: Corolla; engine stumbles and wont rev up on anything over ~20% throttle

Didn't check fuel filter yet. Unplugged the engine temp sensor and it ran the same. No codes at all. Going to get a fuel filter now. here's a vid of it running:

http://www.youtube.com/watch?v=F1Z7tqVgXo8




I'll be returning parts that didn't solve the problem. Trying to spend as little as possible.

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Old 01-30-2009, 08:08 PM
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Default Re: Corolla; engine stumbles and wont rev up on anything over ~20% throttle

That is weird, if it was fuel related it would drive liek ---- no matter what temp. That is ------- weird, makes no sesne it sounds like your hitting a rev limiter. Maybe it something to do with the iac or some sort of idle up/coldstart problem. Let me ask around
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Old 01-30-2009, 08:21 PM
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Default Re: Corolla; engine stumbles and wont rev up on anything over ~20% throttle

sounds like a carburetor thats opening the secondaries WAY too soon and you're choking on fuel like your mom does on my ****
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Old 01-30-2009, 08:26 PM
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Default Re: Corolla; engine stumbles and wont rev up on anything over ~20% throttle

Originally Posted by c0mpl3x
sounds like a carburetor thats opening the secondaries WAY too soon and you're choking on fuel like your mom does on my ****
<3
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Old 01-30-2009, 08:32 PM
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Default Re: Corolla; engine stumbles and wont rev up on anything over ~20% throttle

Just changed fuel filter. Another $26 and no progress
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Old 01-30-2009, 08:39 PM
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Default Re: Corolla; engine stumbles and wont rev up on anything over ~20% throttle

is there an amount of throttle that makes it run like ***? ie, 75%, 50%
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Old 01-30-2009, 08:41 PM
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Default Re: Corolla; engine stumbles and wont rev up on anything over ~20% throttle

Its progressive, the hotter the car gets the less throttle it will tolerate. Lowest i have noticed was 15% +/- the error in my foot feel
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