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1999 camry 2.2 liter. stalling problem after running at

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1999 camry 2.2 liter....
1999 camry 2.2 liter. stalling problem after running at least a half hour. acts like bad Idle Air Control Valve. happened only a couple times over the winter. at least once a week during summer. I can feel the engine stumble at cruising speed. if I do nothing at the next stop it will stall. If I punch it to downshift and rev the motor doing so, the problem stops. replaced the I.A.C.V. with aftermarket (around $30) as the oem was $130. what could my problem be?
Submitted: 7 months ago.Category: Toyota
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Answered in 2 hours by:
9/30/2017
Toyota Mechanic: HDGENE, ASE Master Tech/Toyota Certified replied 7 months ago
HDGENE
HDGENE, ASE Master Tech/Toyota Certified
Category: Toyota
Satisfied Customers: 6,392
Experience: 28 years Auto experience, Ford, GM, Chrysler, Asian & European
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Hello, and thank you for using Just Answer! My name is***** me a few moments to review your question and Ill do my best to assist you.

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Toyota Mechanic: HDGENE, ASE Master Tech/Toyota Certified replied 7 months ago

Hello, are there any warning lights on and have you had it checked for codes using a scan tool before replacing any parts? Does it start right back up once it stalls? Is the throttle body clean, no carbon buildup around the throttle plate?

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Customer reply replied 7 months ago
no warning lights. no codes, no carbon buildup.
Customer reply replied 7 months ago
where is my answer?
Toyota Mechanic: HDGENE, ASE Master Tech/Toyota Certified replied 7 months ago

Good morning, im here. im in arizona its 8 am here, your last response came in at 3 am my time. So the idle speed itself is working ok, the stalling happens mainly after an incident at cruise, then it stalls at a a stop correct?

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Toyota Mechanic: HDGENE, ASE Master Tech/Toyota Certified replied 7 months ago

Ok I dont think thats an idle air control valve issue, this would be caused by either an issue with the mass air flow sensor or evaporative emissions control system. If the evap system purge valve sticks open it can cause the concern you are describing. The Mass air flow sensor can be cleaned using a mass air flow sensor cleaner and see if this resoles the issue first. otherwise I would check the purge valve for sticking open when the problem occurs.

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Customer reply replied 7 months ago
will clean the maf sensor. if i need to go to the purge valve can i google where it is?
Toyota Mechanic: HDGENE, ASE Master Tech/Toyota Certified replied 7 months ago

Yes

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Customer reply replied 7 months ago
thanks
Toyota Mechanic: HDGENE, ASE Master Tech/Toyota Certified replied 7 months ago

You are welcome, if you need more help or information please let me know. If I was helpful,please use the 5 stars above to leave a positive rating.

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Toyota Mechanic: HDGENE, ASE Master Tech/Toyota Certified replied 7 months ago

Do you need more help with this concern?

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Customer reply replied 7 months ago
havent got to it yet. will do tomorow. after i do what you recommend and yet the problem is still there, what do i do?
Toyota Mechanic: HDGENE, ASE Master Tech/Toyota Certified replied 7 months ago
Clean maf first. Still there. Look into evap system. Beyond that you will need a scan tool to look at live sensor data when the problem occurs
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Customer reply replied 7 months ago
ok thanks
Toyota Mechanic: HDGENE, ASE Master Tech/Toyota Certified replied 7 months ago
You're welcome. Please remember to rate the question. If you need more help I'll follow up with you
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Customer reply replied 7 months ago
i will
Toyota Mechanic: HDGENE, ASE Master Tech/Toyota Certified replied 7 months ago
Thank you
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HDGENE
HDGENE, ASE Master Tech/Toyota Certified
Category: Toyota
Satisfied Customers: 6,392
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Experience: 28 years Auto experience, Ford, GM, Chrysler, Asian & European

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