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P0505 Diagnostic Trouble Code Discussion for October 2009

Idle Air Control Motor Circuit Malfunction


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Trouble Ticket Help Requests for DTC P0505
Help Request Posted
1998 Honda Accord EX 3.0L Poor Idle Quality, MIL Lamp on VIN: 1HGCG1653W
P0505: Idle Speed Control System. this car is in pristine cond.and runs beautiful,is also unmolested.cold start up it will idle fine for a few min. then start to fluctuate as it tries to drop below 1000 rpm.after a few more min.it still fluctuates only twice as fast.tested for vac.leaks,none f...
October 08, 2009
2001 BMW 530i 3.0L high idle VIN: WBADT63431
P0505: idle control system. ... 01 bmw 530i that keeps throwing a p0505 or bmw code 204 for idle plausibility. read couple other posts about smoking the intake on this car. smoked it found a small leak at what i beileve is the intake manifold runner controler resealed the runner controle...
October 09, 2009
1996 Honda Civic EX 1.6L Poor Idle Quality VIN: 2HGEJ6683X
P0505: Idle Speed Control System. Custome bought this car. it was park for 3 months.when vechile get hot it idle at 1700 rpm. the speed up and down.code on dash was po505 iac . clear code replace trottle boody used part ,same problem check for vaccum leak no leak,no code now.the best way to de...
October 22, 2009
1998 Honda Accord EX 3.0L Poor Idle Quality, MIL Lamp on VIN: 1HGCG1653W
P0505: Idle Speed Control System. this car is in pristine cond.and runs beautiful,is also unmolested.cold start up it will idle fine for a few min. then start to fluctuate as it tries to drop below 1000 rpm.after a few more min.it still fluctuates only twice as fast.tested for vac.leaks,none f...
October 08, 2009
2001 BMW 530i 3.0L high idle VIN: WBADT63431
P0505: idle control system. ... 01 bmw 530i that keeps throwing a p0505 or bmw code 204 for idle plausibility. read couple other posts about smoking the intake on this car. smoked it found a small leak at what i beileve is the intake manifold runner controler resealed the runner controle...
October 09, 2009
1996 Honda Civic EX 1.6L Poor Idle Quality VIN: 2HGEJ6683X
P0505: Idle Speed Control System. Custome bought this car. it was park for 3 months.when vechile get hot it idle at 1700 rpm. the speed up and down.code on dash was po505 iac . clear code replace trottle boody used part ,same problem check for vaccum leak no leak,no code now.the best way to de...
October 22, 2009