iat sensor problem
Thread Starter
Teching In
Joined: Jul 2022
Posts: 14
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iat sensor problem Hello , I´am new here
have a engine from gmc yukon 2001 , 5.3 L , swapt into old truck , starts right up , idle okay but when I hit the gas it runs not good , have ecm flasht with hp tuners , when I look into HP tuners vcm scanner I see a problem with my mafs sensor , it says minus 39 degrees , but it is around 22 degrees when start up , the maf sensor was gone but have buy one from that year , but connector do not fit correctly , have wired an 2 wire iat sensor but still the wrong temperture , what do I wrong , maybe wrong wire used , thanks Maus
have a engine from gmc yukon 2001 , 5.3 L , swapt into old truck , starts right up , idle okay but when I hit the gas it runs not good , have ecm flasht with hp tuners , when I look into HP tuners vcm scanner I see a problem with my mafs sensor , it says minus 39 degrees , but it is around 22 degrees when start up , the maf sensor was gone but have buy one from that year , but connector do not fit correctly , have wired an 2 wire iat sensor but still the wrong temperture , what do I wrong , maybe wrong wire used , thanks Maus
TECH Regular
Joined: Aug 2007
Posts: 405
Likes: 42
Hello , I´am new here
have a engine from gmc yukon 2001 , 5.3 L , swapt into old truck , starts right up , idle okay but when I hit the gas it runs not good , have ecm flasht with hp tuners , when I look into HP tuners vcm scanner I see a problem with my mafs sensor , it says minus 39 degrees , but it is around 22 degrees when start up , the maf sensor was gone but have buy one from that year , but connector do not fit correctly , have wired an 2 wire iat sensor but still the wrong temperture , what do I wrong , maybe wrong wire used , thanks Maus
have a engine from gmc yukon 2001 , 5.3 L , swapt into old truck , starts right up , idle okay but when I hit the gas it runs not good , have ecm flasht with hp tuners , when I look into HP tuners vcm scanner I see a problem with my mafs sensor , it says minus 39 degrees , but it is around 22 degrees when start up , the maf sensor was gone but have buy one from that year , but connector do not fit correctly , have wired an 2 wire iat sensor but still the wrong temperture , what do I wrong , maybe wrong wire used , thanks Maus
wow I got a migraine trying to read this…
if you have a 5.3 from a 2001 Yukon I believe your MAF has the IAT sensor built into it…
the plug should be the same for all MAFS that have the IAT built in.
Are you using an AC Delco MAF? IAT?
check your wiring, make sure nothing is cut or grounding out.
did you buy a stand alone harness or did you convert your stock harness to stand alone?
Thread Starter
Teching In
Joined: Jul 2022
Posts: 14
Likes: 2
wow I got a migraine trying to read this…
if you have a 5.3 from a 2001 Yukon I believe your MAF has the IAT sensor built into it…
the plug should be the same for all MAFS that have the IAT built in.
Are you using an AC Delco MAF? IAT?
check your wiring, make sure nothing is cut or grounding out.
did you buy a stand alone harness or did you convert your stock harness to stand alone?
if you have a 5.3 from a 2001 Yukon I believe your MAF has the IAT sensor built into it…
the plug should be the same for all MAFS that have the IAT built in.
Are you using an AC Delco MAF? IAT?
check your wiring, make sure nothing is cut or grounding out.
did you buy a stand alone harness or did you convert your stock harness to stand alone?
TECH Regular
Joined: Aug 2007
Posts: 405
Likes: 42
