Go Back   Honda-Tech > Honda and Acura Model-Specific Technical Forums > Honda Accord (1990 - 2002)
Sign in using an external account
Register Forgot Password?
Search


Welcome to Honda-Tech!
Welcome to Honda-Tech.com.

You are currently viewing our forums as a guest, which gives you limited access to view most discussions and access our other features. By joining our community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join the Honda-Tech community today!


Reply
 
 
 
submit to reddit
 
Thread Tools Search this Thread
Old 07-21-2007, 09:30 PM   #1
aging-accord
Garage is empty, add now
 
aging-accord's Avatar
 
Join Date: Jul 2007
Posts: 13
iTrader Rating: (0)
Default 91 Accord Pulsing idle

Weirdest thing just got back the car from the garage from replacing the ignitor, I pull the car in the driveway stick it in park and the idle pulses constantly from about 1000 up to 2000 rpm. It never did this before and the ignitor would have anything to do w/ that.

I did notice a leak in a heater hose that has to be fixed. I did a search in forum and read that the coolant should be bled. Could air from the leak be causing the strange idle???? I have aabout had it with this car.

91 Accord 4-dr f22a4

TIA
aging-accord is offline   Reply With Quote
Old 07-21-2007, 09:39 PM   #2
tech8
Honda-Tech Member
Garage is empty, add now
 
tech8's Avatar
 
Join Date: Jul 2004
Posts: 1,391
iTrader Rating: (0)
Default Re: 91 Accord Pulsing idle (aging-accord)

Yes, air in the system can cause a fluctuating idle.
tech8 is offline   Reply With Quote
Old 07-21-2007, 09:59 PM   #3
zsudz922
Honda-Tech Member
Garage is empty, add now
 
zsudz922's Avatar
 
Join Date: Jul 2007
Location: tha burgh, PA
Posts: 858
iTrader Rating: (0)
Default Re: 91 Accord Pulsing idle (tech8)

also,another cheap thing that might fix it,put some good fuel system cleaner in the next time you fill up the tank.and/or you can manually clean the iacv.
zsudz922 is offline   Reply With Quote
Old 07-21-2007, 10:02 PM   #4
aging-accord
Garage is empty, add now
 
aging-accord's Avatar
 
Join Date: Jul 2007
Posts: 13
iTrader Rating: (0)
Default Re: 91 Accord Pulsing idle (tech8)

Wow tech8 you're all over this message board today. Thanks.

I'm gonna fix the hose for the obvious reason and maybe rectify the pulsing idle in the process.

I have picked up a lot of info with the 'search' button and past posts.

You would by any chance know can the coolant system be bled by just leaving the rad cap off until the engine gets to operating temp? I'm looking at the car now and that bleed screw is nowhere to be found. I've seen diagrams #13 screw in the diagram isn't on my car.

aging-accord is offline   Reply With Quote
Old 07-22-2007, 06:57 AM   #5
tech8
Honda-Tech Member
Garage is empty, add now
 
tech8's Avatar
 
Join Date: Jul 2004
Posts: 1,391
iTrader Rating: (0)
Default Re: 91 Accord Pulsing idle (aging-accord)

The bleed screw should be at the location in this image.

Click the image to open in full size.

... from the same link I posted in your other thread regarding the "S" light:

http://techauto.bravehost.com/

Yes, you can bleed the cooling system by leaving the rad cap off, with temp. controls set all the way to max heat, reving the engine, etc. ... On some cars, if the bleed screw hasn't been touched in years, it may be tough to loosen.
tech8 is offline   Reply With Quote
Old 07-23-2007, 06:25 AM   #6
aging-accord
Garage is empty, add now
 
aging-accord's Avatar
 
Join Date: Jul 2007
Posts: 13
iTrader Rating: (0)
Default Re: 91 Accord Pulsing idle (tech8)

Hey Tech8

Thanks for the info. The diagram you sent now makes sense. It didn't note 'front of car' and lower radiator hose was throwing me not used to foreign jobs. I repaired the hose and bled the system from the radiator. Afraid to crack open that bled screw, I highly doubt the thing as been touch ever and afraid to open a new can of worms, nonetheless all most all the 'pulsing idle' went away. Now the temp gauge bounces....its always something
To no avail the cutting of the old hose at the hole and re-using it with a new clamp, failed after 4 hrs so another lesson learned is to just buy new hose and clamps. It worked long enough though to see a possible result.
Thanks again.

Hey, zsudsz992 thanks for the input its cool to see responses, I also see your from the 'burg. Not to far from it myself N.Hunt myself.
aging-accord is offline   Reply With Quote
Old 07-24-2007, 06:50 AM   #7
aging-accord
Garage is empty, add now
 
aging-accord's Avatar
 
Join Date: Jul 2007
Posts: 13
iTrader Rating: (0)
Default Re: 91 Accord Pulsing idle (aging-accord)

Well to no avail the pulsing is still there. I have read hrs of archived post everything from vac leaks, IACV, FITV, TB, TPS, and even watched that guys video thinking mine was the same (nice idea)

Its sorta similar to his and the others but mine only happens after I have driven the car for a bit. It starts up fine and drives fine but when I place the car in PARK (sometimes) in Neutral I have noticed the pulsing Idle starts. The weirded thing though I noticed I can prevent the pulsing idle from starting if I place my foot on the brake and hold it there while placing the car in park. It starts to climb in RPM but it holds at about 2000 rpm for about 30 sec then decrease to normal (around 1000 rpm) mind you the brake is applied the whole time....

I have bled my coolant, cleaned my IAVC, FITV,and TB. Checked my ECU for stored anything. Matched up my vac lines with a shop diagram, nothing disconnected or leaking. It has to be something simple. It just came back from the garage for a ignitor install and that would have anything to do w/ it.

I'm outta ideas and things to check or clean.
aging-accord is offline   Reply With Quote
Old 07-24-2007, 12:01 PM   #8
Twistedframe
Garage is empty, add now
 
Twistedframe's Avatar
 
Join Date: Feb 2004
Location: Kirkland, WA, USA
Posts: 107
iTrader Rating: (0)
Default Re: 91 Accord Pulsing idle (aging-accord)

When I read things like this, I always think of my situation which was the exact same one..

Try resetting the idle to factory standards. You can follow the procedure from any honda repair manual. Basically you'll be turning two screws to adjust it; throttle stop screw and the air bleed screw.

Chances are they have not moved since they were set originally, but after time with your instance of the ignitor steadily going out on you, the computer could have started reading a higher amount of unburnt fuel in your exhaust stream and adjusted the amount of fuel going into the engine to compensate. So, after replacing your ignitor and regaining full spark, you are now running lean since your fuel intake was trimmed down by the ECU. It will take some time for your ECU to relearn the new air/fuel ratios by itself. Try resetting the ECU by either by disconnecting the terminals for about 30 minutes or pulling the radio backup fuse for 15 seconds.
__________________
'97 Coupe LX F22B2 CD6

[B][url="http://www.TwistedFrame.com"]http://www.TwistedFrame.com[/url][/B]
Twistedframe is offline   Reply With Quote
Old 07-25-2007, 08:04 AM   #9
aging-accord
Garage is empty, add now
 
aging-accord's Avatar
 
Join Date: Jul 2007
Posts: 13
iTrader Rating: (0)
Default Re: 91 Accord Pulsing idle (Twistedframe)

Thanks Twisted for the input, Its good to hear I'm not alone.

The idle was the last thing that I was gonna attempt, it was on the list but pushed back b/c of 1. I'm not super mechanic didn't want to make matters worse 2. I really didn't think that it could have changed it was fine before the ignitor and thought it would be after.
Actually I thought all the stuff I did so far was unbelieveable it has ran fine for 16yrs. What made me think was the car adjusted to the old setting and since I brought the car back from the garage the car in general just seemed odd. Idle different, trans shift points a little out of character, sound of car running just seemed different. The car is acting like a organ transplant in a human and rejecting or adjusting to the new component.

I found a few post on adjustments and I'm gonna go for it.

Thanks for the advice.

aging-accord is offline   Reply With Quote
 
 
 
submit to reddit
Reply

Tags
2004, 91, accord, acura, buy, engine, f22a4, fitv, fluctuates, honda, hunting, iacv, idle, integra, process, relearn, screw, tl

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump



All times are GMT -8. The time now is 01:50 AM.



2008 Copyright, InternetBrands Inc.
Powered by vBulletin® Version 3.7.4
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.

Honda and the Honda marquee are registered trademarks of the American Honda Motor Company, Inc. Neither American Honda Motor Company nor its subsidiaries or affiliates shall bear any responsibility for Honda-Tech.com content, comments, or advertising. Honda-Tech.com is not affiliated with American Honda Motor Company in any way. American Honda Motor Company does not sponsor, support, or endorse Honda-Tech.com in any way. Copyright/trademark/sales mark infringements are not intended or implied.
Emails & Contact Details