Honda Car Forum


 

Go Back   Honda Car Forum - Accord Parts Civic Tuning Acura Racing > Honda Acura > Honda 2

Reply
 
LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old 20 Feb 2008, 05:45 pm
rusa77@gmail.com
Guest
 
Posts: n/a
Default 82 prelude high-idle

Hi all,

The idle speed on my 82 prelude has suddenly increased from 1000 rpm
to ~2000 rpm. Even after the car has warmed up it settles to about
1800-2000 rpm on idling.

On a couple of occasions it did seem to come back to its idle speed of
1000 rpm, but it doesnt seem to hold it there for a sustainable amount
of time.

I have also noticed that when I change gears, and I press the clutch,
the RPM momentarily shoots up to 3000 and then comes down again. It is
a carbureted car. I checked with a mechanic verbally and he thought my
carburetor is going bad. But I am not sure if this is indeed the
problem because I havent seen other signs. I get decent gas mileage
(28-30 mpg)

So, I am not sure what could be wrong. Any thoughts would be much
appreciated.


Sincerely,
Sunny
Reply With Quote
  #2 (permalink)  
Old 21 Feb 2008, 12:44 pm
bi241@scn.org
Guest
 
Posts: n/a
Default Re: 82 prelude high-idle

On Feb 20, 6:45 pm, rus...@gmail.com wrote:
> Hi all,
>
> The idle speed on my 82 prelude has suddenly increased from 1000 rpm
> to ~2000 rpm. Even after the car has warmed up it settles to about
> 1800-2000 rpm on idling.
>
> On a couple of occasions it did seem to come back to its idle speed of
> 1000 rpm, but it doesnt seem to hold it there for a sustainable amount
> of time.
>
> I have also noticed that when I change gears, and I press the clutch,
> the RPM momentarily shoots up to 3000 and then comes down again. It is
> a carbureted car. I checked with a mechanic verbally and he thought my
> carburetor is going bad. But I am not sure if this is indeed the
> problem because I havent seen other signs. I get decent gas mileage
> (28-30 mpg)
>
> So, I am not sure what could be wrong. Any thoughts would be much
> appreciated.
>
> Sincerely,
> Sunny


for idle problems i would suggest first, check for intake vacuum
leaks, and make sure the PCV valve is working properly

then if the idle problem persists but only when the engine is cold,
it's ignition

but if the idle problem persists even when the egine is warm, it's the
fuel system

since you get good mileage, i think the carb's choke didn't get stuck
closed. In fact, i think your carb is fine.

and that the idle races up and comes down indicates a major vacuum
leak, most likely a stuck open PCV valve. You won't be able to tell if
a PCV valve is stuck open when driving, it's supposed to be open on
moderate and wide open throttle anyways. But the problem is pronounced
when the throtle plate is closed






Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

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
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
94 accord High idle when driving, low idle when stopped. Matt Honda 3 3 07 Apr 2005 11:16 pm
High Idle/Erratic RPM Caleb Honda 2 0 16 Nov 2004 01:00 am
Sudden high idle, rough idle, gas smell, very poor mileage Richard Honda 3 8 17 Jan 2004 11:53 pm
Sudden high idle, rough idle, gas smell, very poor mileage Richard Honda 2 2 17 Jan 2004 11:51 pm
idle too high K.P. Singh Honda 3 1 12 Jul 2003 11:34 am


All times are GMT -5. The time now is 07:18 pm.


Attribution:
Honda News | Autoblog
Powered by Yahoo Answers




Powered by vBulletin®
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
LinkBacks Enabled by vBSEO 3.6.0 PL2 © 2011, Crawlability, Inc.
HondaCarForum.com is not affiliated with Honda Motor Company in any way. Honda Motor Company does not sponsor, support, or endorse HondaCarForum.com in any way. Copyright/trademark/sales mark infringements are not intended or implied.