IACV problems

Holyghst · 03-08-2012, 09:11 AM

Okay ive got a 2003 ep3, it started doing the uneven idle so i pulled the throttle and cleaned the iacv. It persisted through that so i changed the maf sensor and cleaned the iacv again. Still it persisted so i replaced the tps sensor. It is still doing it and im blowing the p0507 (idle control system idle high) code. Does anyone have any thoughts? Only thing i can think of is the iacv is just bad. I have also checked for vacuum leaks with no success in finding any. I am getting hella frustrated to say the least lol. I have to get my tags in a couple of weeks and if i dont get this engine code gone ill be stuck without a car. Any help or insight will be most appreciated.

RonJ · 03-08-2012, 12:54 PM

Do you mean P0505?

Holyghst · 03-08-2012, 01:55 PM

Just double checked and its a p0507, says idle control system rpm high

ugadawg187 · 04-30-2012, 06:19 PM

My 97 civic threw a P505 code so changed the IACV with a used one. Ive cleaned it & the intake with gum out twice but after a few days same CEL. The car idles good at 900rpm but when you turn the a/c on it drops to 600-700 & you can hear the IACV click then the rpms kick up for a few seconds. Shouldnt the the rpms kick up when the radiator fan kicks on?

03-08-2012, 09:11 AM	#1
Holyghst Registered User Join Date: Feb 2012 Location: Tennessee Posts: 5 '03 HONDA CIVIC Reputation level: 10	IACV problems Okay ive got a 2003 ep3, it started doing the uneven idle so i pulled the throttle and cleaned the iacv. It persisted through that so i changed the maf sensor and cleaned the iacv again. Still it persisted so i replaced the tps sensor. It is still doing it and im blowing the p0507 (idle control system idle high) code. Does anyone have any thoughts? Only thing i can think of is the iacv is just bad. I have also checked for vacuum leaks with no success in finding any. I am getting hella frustrated to say the least lol. I have to get my tags in a couple of weeks and if i dont get this engine code gone ill be stuck without a car. Any help or insight will be most appreciated.

03-08-2012, 12:54 PM	#2
RonJ Civic minded Join Date: Oct 2007 Location: Houston, TX Posts: 9,323 '97 HONDA CIVIC '00 HONDA CIVIC Reputation level: 137	Do you mean P0505? __________________ Don't guess, troubleshoot -Manuals: site 1 and site 2; -Spark; -Fuses; -Pull 92-00 CEL codes; -Fuse 15 TSB; -Clean IACV or FITV Please do not PM me tech questions.

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03-08-2012, 01:55 PM	#3
Holyghst Registered User Join Date: Feb 2012 Location: Tennessee Posts: 5 '03 HONDA CIVIC Reputation level: 10	Just double checked and its a p0507, says idle control system rpm high

04-30-2012, 06:19 PM	#4
ugadawg187 Registered User Join Date: Apr 2012 Location: Georgia Posts: 12 Reputation level: 10	My 97 civic threw a P505 code so changed the IACV with a used one. Ive cleaned it & the intake with gum out twice but after a few days same CEL. The car idles good at 900rpm but when you turn the a/c on it drops to 600-700 & you can hear the IACV click then the rpms kick up for a few seconds. Shouldnt the the rpms kick up when the radiator fan kicks on?

IACV problems

Engine Tech / Drivetrain