need help: 99 civic with P0505
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need help: 99 civic with P0505
Have a 99 civic ex 5 speed.
Replaced the iac 5 times with 3 used and 2 new.
And the cel keeps popping up for iac.
I can drive all day with no issues.turn the car off .then drive it again until I come
to a stoplight ot stop sign.then light comes on and it stars idling bad.
If anyone has any ideas please help
Replaced the iac 5 times with 3 used and 2 new.
And the cel keeps popping up for iac.
I can drive all day with no issues.turn the car off .then drive it again until I come
to a stoplight ot stop sign.then light comes on and it stars idling bad.
If anyone has any ideas please help
#4
Re: need help:civic keeps eating idle air control valves
blk crx,
Inspect the Vacuum bulk hose for any vacuum leaks. It's shown as ref # 14 in the diagram below:
*diagram courtesy of hondapartsnow.com; all rights reserved
Inspect the Vacuum bulk hose for any vacuum leaks. It's shown as ref # 14 in the diagram below:
*diagram courtesy of hondapartsnow.com; all rights reserved
#6
Re: need help:civic keeps eating idle air control valves
my 2000 si does this too, but when i try to take off from a light and push the gas a little the motor starts pulsing from about 1600-1800. any ideas of what this could be?
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#10
Re: need help:civic keeps eating idle air control valves
Did you bleed the cooling system for air bubbles? Jump the ECU with a paper clip and see if there are any other codes besides the one for the IAC.
BTW, I'm not sure what the possibility of getting that many problematic IACVs but I know it's possible. I bought one that was defective and once I got one that actually worked, my idling issue went away.
BTW, I'm not sure what the possibility of getting that many problematic IACVs but I know it's possible. I bought one that was defective and once I got one that actually worked, my idling issue went away.
#12
Re: need help:civic keeps eating idle air control valves
If the problem pops up again, pull the code with an OBD2 code reader and post it. The problem obviously wasn't a bad IACV.
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Re: need help:civic keeps eating idle air control valves
Have a 99 civic ex 5 speed.
Replaced the iac 5 times with 3 used and 2 new.
And the cel keeps popping up for iac.
I can drive all day with no issues.turn the car off .then drive it again until I come
to a stoplight ot stop sign.then light comes on and it stars idling bad.
If anyone has any ideas please help
Replaced the iac 5 times with 3 used and 2 new.
And the cel keeps popping up for iac.
I can drive all day with no issues.turn the car off .then drive it again until I come
to a stoplight ot stop sign.then light comes on and it stars idling bad.
If anyone has any ideas please help
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Re: need help:civic keeps eating idle air control valves
a thread like that was just solved. could help you. https://honda-tech.com/forums/showthread.php?t=2993155
and as far as the code it shows twice on a scanner. a p0505
#15
Re: need help: 99 civic with P0505
Why would you wait this long to post the CEL code in this thread - title edited.
You also have not yet described the idle problem. Is it high, low, and/or surging?
You also have not yet described the idle problem. Is it high, low, and/or surging?
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Re: need help: 99 civic with P0505
it idles at 1500 and when you give it gas on take off it starts kicking and bucking.also when you let off the gas.
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Re: need help: 99 civic with P0505
Ive been dealing with this issue for months now. Ive replaced the part and still get this issue. Clear the code using a scanner, 1-2 days later it comes back up. P0505 and sometimes twice (pending). Car jerks a little when i engage the clutch, if i cruise in neutral the idle will surge from 1k-2k until the car stops. If i press the gas pedal slightly and hold it will surge pretty fast from 1k-2k. Sometimes I will get a P0420 and P0310 but thats likely due to my ebay 02 sensor readings from my exhaust. (yonaka hi flow cat. converter+cat back system exhaust). I have gotten codes P0420 and P0310 and car runs normal. Only when I get P0505 does the car jerk.
I found this site that tells you how to diagnose it, I will attempt this tonight and see how it goes.
http://www.obd-codes.com/p0505
I have yet to swap out the ECU.
I found this site that tells you how to diagnose it, I will attempt this tonight and see how it goes.
http://www.obd-codes.com/p0505
I have yet to swap out the ECU.
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