Why idle problems on '07 Civic after resetting computer?

Asked by Jan 19, 2014 at 04:56 PM about the 2007 Honda Civic EX

Question type: Maintenance & Repair

After having throttle body cleaned, the cold idle was a bit high and fluctuated until warm.  
I've reset the computer several times, and each time the idle's fine for a couple days,
then gradually goes back to its "surging" when cold.  By the way, no error codes display.

4 Answers

19,415

The IAC thinks it is connected to a new engine each time the battery is disconnected. It takes a few drive cycles to reset itself. If it continues to do this I would replace the IAC. Idle air control valve.

4,375

check to make sure the air intake components are installed correctly. as mentioned previously it does take about 40-50 miles for the computer to reset. last but not least when was the last time the spark plugs, and air filter were changed?

The problem occurred immediately after the throttle body was cleaned. Plugs and air filter had both been replaced a few months prior to throttle body service. I removed the appropriate fuses to reset the computer. The car then idled correctly for 2-3 days, then slowly reverted to the surging. Once the car is at operating temp, all is fine.

19,415

Cleaning the throttle body may have blown some of the gunk back into the IAC. Take it off and try cleaning it.

Your Answer

Add photo

Related Questions

Civic

Looking for a Used Civic in your area?

CarGurus has 88,603 nationwide Civic listings starting at $995.

ZIP:

Search Honda Civic Questions

Honda Civic Experts

#1 Tom Demyan
Tom Demyan
Reputation 980
#1 Jonathan Ford
Jonathan Ford
Reputation 980
#3 Takoda Fraser
Takoda Fraser
Reputation 970
View All

Related Models For Sale

Used Honda Accord
813 Great Deals out of 84,287 listings starting at $1,050
Used Honda Civic Coupe
187 Great Deals out of 16,850 listings starting at $800
Used Toyota Corolla
785 Great Deals out of 73,830 listings starting at $1,995
Used Toyota Camry
1,011 Great Deals out of 90,917 listings starting at $650
Used Honda CR-V
898 Great Deals out of 61,170 listings starting at $988
Used Nissan Altima
1,033 Great Deals out of 81,564 listings starting at $1,200
Used Mazda MAZDA3
231 Great Deals out of 31,863 listings starting at $1,495
Used Hyundai Elantra
573 Great Deals out of 52,575 listings starting at $1,499
Used Honda Accord Coupe
180 Great Deals out of 10,520 listings starting at $1,995
Used Ford Focus
546 Great Deals out of 57,171 listings starting at $1,095
Used Ford Mustang
472 Great Deals out of 45,735 listings starting at $1,999
Used Nissan Sentra
480 Great Deals out of 54,266 listings starting at $900
Used BMW 3 Series
974 Great Deals out of 31,729 listings starting at $1,000
Used Volkswagen Jetta
446 Great Deals out of 40,941 listings starting at $950

Used Cars For Sale

2017 Honda Civic EX For Sale
17,157 listings starting at $18,858
2016 Honda Civic EX For Sale
15 Great Deals out of 475 listings starting at $13,900
2015 Honda Civic EX For Sale
24 Great Deals out of 696 listings starting at $12,777
2014 Honda Civic EX For Sale
41 Great Deals out of 1,250 listings starting at $9,990
2013 Honda Civic EX For Sale
25 Great Deals out of 661 listings starting at $7,890

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.