00 civic ex idle from hell HELP
#1
Honda-Tech Member
Thread Starter
Join Date: Aug 2013
Location: East Grenebush NY
Posts: 6
Likes: 0
Received 0 Likes
on
0 Posts
00 civic ex idle from hell HELP
ok so ill start from what happened to where im at now..
CAR- 2000 civic ex manual with cali emissions.
engine is D16y8 head mated to d15b bottom end.
all obd2 original harness.
So car had no prior issues then this occured... was driving for several hours in and out of stores, typical sunday. Left car running to get a monster drink, come back out to see car idling at 2200 rpm. CEL had come on for P0505 at this time. so i cleared code and cleaned iac valve. even replaced iac and no change.
So i start checking things such as vacuum, all hoses are flexable and in excellent condition i sprayed TB cleaner all over them while engine was hot and no idle change at all.
i did notice coolant resivoir was empty so i added to it and filled the radiator up with about mayby 5-8oz of coolant. was barely low.
i also plugged the port in the TB and noticed my idle did die down from 1800 to about 1000.
i noticed my temp gauge was slow (i had heat but gauge wasnt moving) so i replaced the ETC sensor and now i idle at 1400 cold and hot.
If i pump the brakes fast itll cause the car to do the wah wah dance surge going from 1300-2000 rpm.
radiator cap is good and so is radiator.
any ideas? im putting a brand new IAC on tonight and try to bleed the coolant but im pretty stumped so any advise is good thanks in advance!
CAR- 2000 civic ex manual with cali emissions.
engine is D16y8 head mated to d15b bottom end.
all obd2 original harness.
So car had no prior issues then this occured... was driving for several hours in and out of stores, typical sunday. Left car running to get a monster drink, come back out to see car idling at 2200 rpm. CEL had come on for P0505 at this time. so i cleared code and cleaned iac valve. even replaced iac and no change.
So i start checking things such as vacuum, all hoses are flexable and in excellent condition i sprayed TB cleaner all over them while engine was hot and no idle change at all.
i did notice coolant resivoir was empty so i added to it and filled the radiator up with about mayby 5-8oz of coolant. was barely low.
i also plugged the port in the TB and noticed my idle did die down from 1800 to about 1000.
i noticed my temp gauge was slow (i had heat but gauge wasnt moving) so i replaced the ETC sensor and now i idle at 1400 cold and hot.
If i pump the brakes fast itll cause the car to do the wah wah dance surge going from 1300-2000 rpm.
radiator cap is good and so is radiator.
any ideas? im putting a brand new IAC on tonight and try to bleed the coolant but im pretty stumped so any advise is good thanks in advance!
#3
Honda-Tech Member
Thread Starter
Join Date: Aug 2013
Location: East Grenebush NY
Posts: 6
Likes: 0
Received 0 Likes
on
0 Posts
Re: 00 civic ex idle from hell HELP
well found out radiator had a small leak in top seam that the stock foam insulator was absorbing. so i replaced that and burped the system for about 2 hours untill it no longer burped for about 30 minutes. i got a iac off a friend that was known to be good (took off his gsr when switching to a aftermarket mani) and idle is still high. then again this part was sitting in his tool box for a couple months so could have went bad mayby? im installing a new out of box iac tonight hoping it fixes this idle. also im going to remove the tb and clean all ports and throw a new gasket on there. any one have any tests or ideas to check before i start tearing into this thing tonight?
#5
Honda-Tech Member
Thread Starter
Join Date: Aug 2013
Location: East Grenebush NY
Posts: 6
Likes: 0
Received 0 Likes
on
0 Posts
Re: 00 civic ex idle from hell HELP
ok well after installing a new iac i still had idle surge and high idle. so i said F it and decided to take the car out for a spin, after being on the highway for 20 minutes i went to turn on my cruise control and noticed it didnt work, well I have to say i feel like a giant idiot because to my surprise there was my cruise control vacuum hose dangling in the wind. Connected it and bam car runs beautiful but much better do to cleaning all the ports and etc.
thanks all!
thanks all!
Thread
Thread Starter
Forum
Replies
Last Post
ERICSCEBY
Honda Civic / Del Sol (1992 - 2000)
21
09-19-2020 08:32 PM
therest
Honda Accord (1990 - 2002)
9
03-15-2016 05:26 AM
Apple395
Honda Civic / Del Sol (1992 - 2000)
21
06-22-2014 10:24 PM
nismoracingsx
Honda Civic / Del Sol (1992 - 2000)
23
02-18-2014 04:32 PM
accordianex
Honda Civic / Del Sol (1992 - 2000)
9
04-03-2007 07:30 AM