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I have a 2003 Toyota Corolla and I am have a very rough

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Hi I have a 2003...
Hi I have a 2003 Toyota Corolla and I am have a very rough ideal so far I've replaced to mass air flow sensor, head gasket, and this little thing under my throttle body that has the two coolant lines going into it. Can runs fine at higher Rpms only and issue when idleing
Submitted: 1 year ago.Category: Toyota
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Customer reply replied 1 year ago
Thinking it might possibly be a vacuum leak but I no nothing about those
Answered in 5 minutes by:
4/6/2016
Toyota Mechanic: AZTechBrian, ASE Certified Technician replied 1 year ago
AZTechBrian
AZTechBrian, ASE Certified Technician
Category: Toyota
Satisfied Customers: 732
Experience: Owner
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Hello. Have you checked for codes yet? I'm sure there are some.
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Customer reply replied 1 year ago
No I don't own a code scanner
Toyota Mechanic: AZTechBrian, ASE Certified Technician replied 1 year ago
Ok. I would advise then stopping by autozone and having them scan for codes. That will point us in the right direction. It does definitely sound like a vacuum leak though. Vacuum leaks often do result in a rough idle, but no issues at increased RPM.
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Customer reply replied 1 year ago
Um can u tell me where the vacuum tube is or like how many r there like if it's only a couple I could check them but what would I use to find a whole
Toyota Mechanic: AZTechBrian, ASE Certified Technician replied 1 year ago
There are a lot of potential sources of vacuum leaks under the hood. The best solution is a smoke test. You can try to listen for a sucking whistling sound under the hood. Sometimes they can be heard like that.
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Toyota Mechanic: AZTechBrian, ASE Certified Technician replied 1 year ago
That doesn't mean that it's definitely a vacuum leak though. If you can get access to a scan tool and at least check codes that would be very helpful. If you can also check fuel trims that would be even more helpful.
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Customer reply replied 1 year ago
Ok I'll try autozone first
Toyota Mechanic: AZTechBrian, ASE Certified Technician replied 1 year ago
great. Let me know what they come up with and well get this figured out for you.
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Customer reply replied 1 year ago
Alright I will um thanks for the help
Toyota Mechanic: AZTechBrian, ASE Certified Technician replied 1 year ago
Your welcome
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Toyota Mechanic: AZTechBrian, ASE Certified Technician replied 1 year ago
If I don't respond right away, I will as soon as I am able to.
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Toyota Mechanic: AZTechBrian, ASE Certified Technician replied 1 year ago
Hi. How did it go? were you able to get the codes?
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AZTechBrian
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