Check Engine Light P0128 - Hyundai Forums : Hyundai Forum
 
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#1 Old 07-08-2010, 06:32 PM
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devon_pritchett
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my check engine light came on and the code is P0128. what can i do to fix it i already put a new thermostat and coolant temp sensor in and new radiator fluid.
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#2 Old 07-08-2010, 07:14 PM
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From odb-codes.com"

A code P0128 may mean that one or more of the following has happened:

Low engine coolant level
Leaking or stuck open thermostat
Faulty cooling fan (running too much)
Faulty coolant temperature (ECT) sensor
Faulty intake air temperature (IAT) sensor


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#3 Old 07-22-2010, 10:16 PM
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devon_pritchett
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i put a new thermostat in and a collant temp sesnor and also all new coolant. so should i try the intake air sensor and how much does one cost and where can i buy an air intake sensor
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#4 Old 07-22-2010, 11:25 PM
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Program #168, hope maybe some untold data change included in the package...

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#5 Old 07-25-2010, 10:38 PM
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devon_pritchett
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can you send me a link
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#6 Old 07-25-2010, 11:10 PM
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QUOTE (devon_pritchett @ Jul 25 2010, 10:38 PM)
Quote:
can you send me a link

You will need to visit dealer, hook up GDS, work way into "ECU UPGRADE", and if #168 is available (I think that is the number)-- titled 3.3 ECM Upgrade, install it... may check for trans upgrade, but I do not think there is any, if so, it'll pop up when "AT" selected and ROM read..




QUOTE (devon_pritchett @ Jul 22 2010, 10:16 PM)
Quote:
i put a new thermostat in and a collant temp sesnor and also all new coolant. so should i try the intake air sensor and how much does one cost and where can i buy an air intake sensor
You dont want to go there...

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#7 Old 07-27-2010, 09:57 PM
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devon_pritchett
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so your saying i need an ecu upgrade and it will solve the problem? how much would it costs. thanks
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#8 Old 07-28-2010, 12:35 PM
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All you can do is try... it is the latest update...

This one is not titled for anything specific, other than they told us at school to use it as it has previous progams info in it, and more secret stuff we dont need to know about, so it might have parameter change included to deal with your 1128 concern.

You'll have to call dealer and ask them what they would charge to program, likely beyond your 5/60, so no warranty there.

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#9 Old 08-08-2010, 06:13 PM
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devon_pritchett
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the light keeps coming back on after i delete. po128 check wngine light comes on after about 50-100 miles of drivining ive replaced the t stat, temp sensor, and put new radiator fluid in. do u think its the air intake sensor
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