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need some help with possibly faulty sensors
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ni5958
New User
Apr 21, 2013, 5:12 AM
Post #1 of 6
(1769 views)
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need some help with possibly faulty sensors
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hi,
my car is a hyundai getz 2004 automatic , 1600cc , gls, about 100k km .
a few weeks ago my check light came on and about a week after it got off
i took it to the hyundai garage and they told me i have a faulty map and front oxygen sensors and asked for a ridiculous amount of money(in my opinion) to repair it.
i decided i could probably buy the sensors and replace them myself for much less. so to start i've bought a 8$ code reader . but my code reader gave me a p0112 error code which indicates a problem with iat sensor as i've found out on the internet.
i think i am noticing about a 10-20% decrease in the fuel consumption in the last few weeks so i guess at least one of the sensors is bad .
after a little searching on the net, i've found out that the iat and the map sensors are a single unit in my car.
after that i used my obd 2 reader to try and get some more information about the sensors.
while the engine was warm enough (about 85c) i got the following info :
oxygen sensors - the automatic test of the obd 2 software indicates that everything is o.k,
the voltage reading seems fine, it jumps around between the normal values at all time .
intake pressure - this also seems fine , at 0% throttle at idle i get about 35kpa and at full throttle about 95kpa.
intake temp - almost everytime i tested it, it was fine ,i got values a little bit more than the ambient temp , however , one time when it was rainning hard
i got -30c while the outside temp was around +20c .
so my question is, what do you think is wrong with the car ?
as it seems to me, maybe the iat sensor is faulty which means changing the map sensor ?
and why did the hyundai garage also told me the o2 sensor is bad ? is there something i missed with my testing ?
by the way , a couple of days after the last time i checked and the code p0112 error disappeared .
i would appreciate any help , thanks.
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Hammer Time
Ultimate Carjunky
/ Moderator
Apr 21, 2013, 6:33 AM
Post #2 of 6
(1740 views)
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Re: need some help with possibly faulty sensors
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This is not a US sold vehicle and we have no info on it.
I seriously doubt that an IAT is built into a MAP sensor. A MAF sensor would make more sense.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
(This post was edited by Hammer Time on Apr 21, 2013, 6:34 AM)
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ni5958
New User
Apr 21, 2013, 9:34 AM
Post #3 of 6
(1713 views)
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Re: need some help with possibly faulty sensors
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mechanically its very much like the accent,
also i'm not sure it has a maf sensor
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Hammer Time
Ultimate Carjunky
/ Moderator
Apr 21, 2013, 9:38 AM
Post #4 of 6
(1707 views)
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Re: need some help with possibly faulty sensors
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Like I said, I have no info on the car but i can tell you it would be pretty difficult to read intake air temp through a component that is connected to nothing but vacuum line.
IAT sensors are built into MAF sensors, not MAPs.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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ni5958
New User
Apr 21, 2013, 9:54 AM
Post #5 of 6
(1703 views)
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Re: need some help with possibly faulty sensors
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ok thanks anyway .
in general, would you guess its a problem with the iat sensor ?
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Hammer Time
Ultimate Carjunky
/ Moderator
Apr 21, 2013, 9:56 AM
Post #6 of 6
(1700 views)
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Re: need some help with possibly faulty sensors
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We don't guess. We test the circuit to determine the problem. The code merely means there is an issue with the circuit. It could be the sensor, the computer or any related wiring.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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