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Old 11-14-2014, 10:38 AM   #19
Mika
 
Drives: Yaris 2007
Join Date: Oct 2014
Location: Puerto Rico
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Quote:
Originally Posted by kustomrtr View Post
Hey, I just wanted to say that I have the same exact issue you're describing. Same low rpm and the ac starts blowing warm air.

I have 6 months with this issue. I changed the fuel pump, spark plugs, air filter, cleaned the MAF, cleaned the throttle body,etc but I'm still having the same issue.

If you find out what the problem is, please update this thread. I'll let you know if I fix it!

Saludos
Count on that.

Thank for bring what you have tried.
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Old 08-14-2015, 08:03 PM   #20
monchito18
 
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bump having this issue
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Old 08-17-2015, 03:04 PM   #21
esse10
 
Drives: 2009 yaris 2 door
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Location: richmond TX.
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low or erratic Idle

for you folks that are still having this issue of low and erratic up/down rpm at Idle I used to have this same problem and mine went away by just tightening up a little more on the serpentine belt. I figured since these cars don't have the automatic tensioner pulley you'll have this problem from time to time when the belt get's old and stretches. Hope this helps out the next guy out there with idle issues.
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Old 10-17-2015, 05:26 AM   #22
ojgang
 
Drives: Vitz 2007
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Location: Pakistan
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Iam having the same problem. any luck?
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Old 04-14-2016, 04:49 PM   #23
jcboy
 
Drives: Sedan 07
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Location: Asia
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Sorry to necromance, but i'm having this problem now. haven't cleaned the throttle body yet, but i've changed filter, changed gasoline to premium, did "italian tune up" but the problem seems to reappear every now and then.

While on neutral, mine's an MT, while waiting for the stoplight to turn to Green the engine gets "confused" on the idle sometime and then drops low and then stalls.

any luck with the OP?
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Old 04-15-2016, 12:00 AM   #24
bairjo
 

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Bad gas/Fuel Filter.
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Old 04-15-2016, 02:19 AM   #25
yariseggvvti
 
Drives: Yaris Hatchieback
Join Date: Jun 2010
Location: Cali
Posts: 199
replace engine mounts

time to replace engine mounts. left, right and lower.
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Old 04-20-2016, 08:54 AM   #26
jcboy
 
Drives: Sedan 07
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Quote:
Originally Posted by bairjo View Post
Bad gas/Fuel Filter.
thank guys.

i'm inclined to thinking this too, but i've changed gasoline already. anyway it happens less now, after cleaning MAF (by removal and spraying) and TB (without disassembly, just spraying and cleaning with rag).

however, the issue shows up every now and then.

is disassembling the TB (to clean more thoroughly) going to help? i'm concerned about the DBW (drive-by-wire) hence not being able to move the butterfly/metal plate while disconected, making disassembly a futile attempt.

also, is the IACV "cleanable" if TB is disassembled? (can't seem to figure out where it is by mere virtual inspection)

Thanks in advance
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Old 08-08-2016, 11:07 AM   #27
Mika
 
Drives: Yaris 2007
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Any update on this? Has anyone been able to figure it out?
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