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

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01-29-2009, 12:10 AM

enikolayev

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

94 1.6L 'rolla

checked cap/rotor/plugs/wires

If cold it runs like a charm, when it warms up funny things start happening.

not sure what else i should check. This is my DD so its a pain in the butt.

01-29-2009, 02:48 AM

myAE86turbo

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

Give hmt 3 more years and there will be an equal amount of toyota to Honda tech

01-29-2009, 02:59 AM

enikolayev

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

I don't have 10 years >.>

Car has egr system maybe something malfunctioning in TB?

01-29-2009, 03:14 AM

turbostd

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

My civic ran like that when the o2 sensor went bad. It ran fine cold but once it got up to temp it ran like *** and wouldn't go above 4k rpm.

01-29-2009, 03:57 AM

t_cel_t

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

take the dizzy cap off and wipe the water out of it, my rolla pulls this ---- all the time

01-29-2009, 10:39 AM

idiot-stick

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

maf going bad? Bad O2? EGR problem? any codes?

01-29-2009, 11:39 AM

Tom-Guy

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

Does it run better with the MAF unplugged?

01-29-2009, 11:43 AM

jinxy

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

They run with the maf unpluged? Mine wont.

01-29-2009, 12:10 PM

Hitchhikkr

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

Quote:

Originally Posted by rawr

They run with the maf unpluged? Mine wont.

Yours is a flapper type. IF his is hotwire, it will run unplugged. If it runs better, its the MAF for sure. Cant remember when they changed over on the 7a-fe.

Corollas are notorious for hotwire MAF failures. A new one is like $250.

EDIT: Nevermind his car is spilt year still a 4a-fe.

01-29-2009, 12:12 PM

#10

lilpooh21186

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

+2 for maf failure