so when all my sensors are pluged in like my tps and my iacv it will fluxuate in idle from like 1g to 2g's and when i unplug my tps sensor it will just idle at 1500 or around there but doesnt fluxuate...is my tps sensor bad?

 

ive searched on this..i kno there is alot of topics..but nothing on the tps sensor like this

 

this may sound stupid but have you checked all of you vacum lines...

 

Check the voltage on your TPS, and have you tried bleeding your coolant? When there's air in your coolant, when those pocket of air hit the IACV, the idle will surge sparatically.

 

i can vouch that...my car was idle surging and it turned out i had air in my coolant lines..so try bleeding it..take no time...

 

Is your idle set to the right RPM? Make sure the idle is set to 825rpm+ -
with the screw. Also check ur resistance on the TPS as stated.
It should be .5 closed and .45 wide open I believe.

 

so just drain all my coolant? or what?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ericstambaugh07 &raquo;</TD></TR><TR><TD CLASS="quote">so just drain all my coolant? or what? </TD></TR></TABLE>

No, bleed it like he said.

 

this might sound very dumb but how do you bleed it..and where from?

 

it doesnt only rev up once ina while it does it constantly its like down at 1000 up to 2000 and up and down so on ..idk what the prob is

 

Follow your lower radiator hose, it will conect to the thermostat housing by the back left corner of the cylinder head. You will see a little bolt with a hole in it, this is the bleeder nipple. Take off your radiator cap and unscrew the bleeder nipple, once you see a steady stream of coolant comming out your done.

 

Its circled in red in this picture.

 

thank you for your help..i am going to do this right now..ill tell you my results..thanks again everyone

 

i did it with the car running and with the radiator cap off..and it will come out of the radiator sometimes and when it rev's up the coolant will come out of the bleeder screw..but when its down toward 1000rpm's none will come out



Modified by ericstambaugh07 at 11:23 AM 1/18/2007

 

try blocking your fast idle thermo valve on your throttle body.. that does the trick.. just do a search for it on here and you will find what you need

 

if your car is steady ilding high or low then you can adjust the idle on the throttle body. but first you need to go back and make sure that your not loosing coolant through the bleeder screw. if that doesnt work try what championshipwhite93si said.

 

tryed the screw and the coolant..still nothin..ima try the fast idle valve tommorow

 

the search button was my friend indeed...

im haveing the same problem so i will definatly try bleeding the system the way it was mentioned earlier... qick question tho, i have a Ls out of a 92 teggy, the bleeder screw is on the upper radiator hose just off the head... dose the same princaple apply...? thank you, Brian