Help w/throttle body and IAC
Thread Starter
Teching In
Joined: Aug 2005
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Help w/throttle body and IAC So after asking this question, I have come to belive that my IAC may be dirty. I replaced my Lid and Filter and cleaned up the throttle body with a rag (oil residue) and I believe that my idle and surging problem is from a dirty IAC. How do clean this? Do I use plain old Gunk carb cleaner with the engine off or on? Do I need a special cleaaner other than a degreaser? IPA Alcohol? Should I remove the IAC and clean it and then clean out the passage in the throttle body with something? Please comment.
Thanks
Nick F
Thanks
Nick F
TECH Senior Member
Joined: Mar 2004
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From: BFE
Originally Posted by nick f
So after asking this question, I have come to belive that my IAC may be dirty. I replaced my Lid and Filter and cleaned up the throttle body with a rag (oil residue) and I believe that my idle and surging problem is from a dirty IAC. How do clean this? Do I use plain old Gunk carb cleaner with the engine off or on? Do I need a special cleaaner other than a degreaser? IPA Alcohol? Should I remove the IAC and clean it and then clean out the passage in the throttle body with something? Please comment.
Thanks
Nick F
Thanks
Nick F
Should I remove the IAC and clean it and then clean out the passage in the throttle body with something? Please comment.
Just be careful to remove the O ring carefully and not to spray it with abrasive stuff. I used Q-tips to get inside.
Thread Starter
Teching In
Joined: Aug 2005
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So i went a bought some throttle body cleaner form Gunk, says its safe of IAC and what not. Took out the IAC, didn't look that bad. Sprayed the IAC, took out the o-ring and sprayed the the hole where the IAC was. Stuck a rag in there and wiped all the oil out of there. Re-installed and now it's slightly better, but not back to normal. I still have the rough, miss at idle, and sometimes now I get the surging loss of power engaging first gear. Sometimes I will here a pop from the exhaust during the engagment of first gear.
This morning, also did a IAC reset, did nothing. Please Help
Thanks
Nick F.
This morning, also did a IAC reset, did nothing. Please Help
Thanks
Nick F.
Staging Lane
Joined: Nov 2004
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Is your throttle body ported? I'm having an idle issue ever since mine has been ported and when I did a search it seems like I'm not the only one 
. I had to open the throttle blade to keep the gas pedal from sticking but now there is too much air coming through and my tps voltage is high. The computer keeps trying to bring the idle down but there is just too much air flowing past the blade for it to stay down so it goes back and forth (surging).
. I had to open the throttle blade to keep the gas pedal from sticking but now there is too much air coming through and my tps voltage is high. The computer keeps trying to bring the idle down but there is just too much air flowing past the blade for it to stay down so it goes back and forth (surging). 
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From: Live Oak, FL - in the woods where the creatures lurk.
Originally Posted by rednecks70
Is your throttle body ported? I'm having an idle issue ever since mine has been ported and when I did a search it seems like I'm not the only one . I had to open the throttle blade to keep the gas pedal from sticking but now there is too much air coming through and my tps voltage is high. The computer keeps trying to bring the idle down but there is just too much air flowing past the blade for it to stay down so it goes back and forth (surging).
. I had to open the throttle blade to keep the gas pedal from sticking but now there is too much air coming through and my tps voltage is high. The computer keeps trying to bring the idle down but there is just too much air flowing past the blade for it to stay down so it goes back and forth (surging).
