IAC valve - Page 2

mwood · 09-29-2009, 02:43 PM

Quote:

Originally Posted by duckle1

even if autozone scans for free my truck will not communicate for some reason, so I have to guess. it Idles up and down in the mornings ,warms up and is fine, any ideas?

im haveing the same problem with a 5.3 its a 2004 except mine will die on me if i dont let it run for about five mins.. I have a tbs,cai, and jet performance maf, also a hypertech hyperpack tuner.... im thinkin it might be my IAC also but not really sure...

mwood · 09-29-2009, 02:56 PM

Quote:

Originally Posted by keithr0005005

crazy idle could also be the tps

whats tps?

1500cheyenne96 · 09-29-2009, 02:57 PM

Throttle Position Sensor

mwood · 09-29-2009, 02:59 PM

Quote:

Originally Posted by 1500cheyenne96

Throttle Position Sensor

thats what i guessed, what should it be at?

bradrhale · 09-29-2009, 03:03 PM

5.3 is between .2 volts and .4 volts at idle, i believe. bad TPS is characterized by high idle and/or late shifting points.

mwood · 09-29-2009, 03:06 PM

Quote:

Originally Posted by bradrhale

5.3 is between .2 volts and .4 volts at idle, i believe. bad TPS is characterized by high idle and/or late shifting points.

Thanks.. i have a tuner and have changed my shift points.. but the problem was there before i had my tuner, is it possible whoever owned it before me put a tune on it and messed somthing up?

bradrhale · 09-29-2009, 03:07 PM

i read your other thread and do not believe this is a tuning problem nor a TPS problem.

mwood · 09-29-2009, 03:08 PM

Quote:

Originally Posted by bradrhale

i read your other thread and do not believe this is a tuning problem nor a TPS problem.

LOL **** im clueless man i dno what to do

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09-29-2009, 02:57 PM	#13
1500cheyenne96 Senior Member Join Date: Sep 2009 Location: MIchigan Posts: 197	Throttle Position Sensor

09-29-2009, 03:03 PM	#15
bradrhale Senior Moderator Join Date: Apr 2006 Location: Texas Posts: 8,025	5.3 is between .2 volts and .4 volts at idle, i believe. bad TPS is characterized by high idle and/or late shifting points.

09-29-2009, 03:07 PM	#17
bradrhale Senior Moderator Join Date: Apr 2006 Location: Texas Posts: 8,025	i read your other thread and do not believe this is a tuning problem nor a TPS problem.