Our website family:  ClubCivic.com - ClubIntegra.com - TunerSports.com

SEARCH: Forums | Parts
Attention Honda Civic Visitor:  Remove this block by logging in above or registering.

Welcome to ClubCivic.com, a forum dedicated to the Honda Civic, including all generations. In order to post on this forum you will have to register.

Registration is free and will intitle you to other site features including access to post your Honda Civic in the member's garage, join in raffles for performance parts, etc.

Go Back   ClubCivic.com - Honda Civic Forum > Honda Civic Technical > Engine Tech / Drivetrain


Please SEARCH Before Posting a New Thread. ->
Ready to Post a New Thread/Question? ->

95 Civic DX Coolant Loss & Rough Idle

Engine Tech / Drivetrain

Technical forums are exclusively for technical discussions.
Thread Makers: Thread titles must summarize the technical question or problem, and the first post must include the year, trim, and any mods for your Civic.
Responding Members:
Limit your posts to helpful responses, and do not tell members to "Go Search", unless you also provide some specific guidance on the technical question or problem.
All Members: Rude or flaming posts will not be tolerated, though civil debate and disagreement are acceptable.

Thread Tools
Old 09-27-2010, 12:46 PM   #1
Registered User
Join Date: Sep 2010
Location: United States
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts

Default 95 Civic DX Coolant Loss & Rough Idle

Some quick back story: my Civic was in the shop due to overheating and loss of power/idle going nuts and powering up from 1k-3k at a stop. I got my Civic back last Sunday - the mechanic said I had a broken PCV valve and replaced it. He also said I was low on coolant and filled it back up, which has stopped the overheating (weird, I know, further explanation below0.

Civic ran fine all of last week, but this morning on the way to work I noticed a couple of things - idle is rough at stops, feeling like it's idling too low (huffs and puffs at stops). After parking in my garage, I had also noticed the engine temp gauge had risen just slightly (just a bit above what it normally runs at). I've had an ongoing problem with my cooling system in the past year or so. At first my radiator and then one of my hoses blew, causing overheating. But lately, my coolant seems to just disappear on its own - no leaks anywhere - it just lowers over time and disappears, causing overheating.

I've read on several forums this morning that this idle issue and loss of coolant are related to either the IACV or some other parts. Can anyone help explain this to me and provide some clarity on the issue, what the problem could be, and potentially how to fix it? I just need my Civic to last me a couple more weeks before my new car arrives. Thanks!
Fiq is offline   Reply With Quote
Old 09-28-2010, 09:37 PM   #2
Registered User
Join Date: Sep 2010
Location: Imperial Valley
Posts: 230
Thanks: 0
Thanked 0 Times in 0 Posts


Uhhh... The IACV doesn't cause coolant to mysteriously disappear. Coolant being drawn into a cylinder from a blown head gasket will though. and it can cause an idle issue from disrupting combustion, and cause overheating either directly or indirectly. A PCV valve is an emissions item, it has no effect on your car's temperature. if you just need the car to last, go easy on it and keep the coolant level up. No guarantee the problem won't get worse and the head gasket lets go. I wouldn't let the car above normal temp at all.

If you can't find a visible leak anywhere (check all hoses, radiator seams, smell your air vents in the car with the heater on, check the bottom of the timing belt cover), that is where it is going. Your spark plugs should tell you too, pull them and look at them.
stateofjustin is offline   Reply With Quote
Old 09-29-2010, 03:11 PM   #3
Join Date: Apr 2010
Location: 29 Palms, CA
Age: 34
Posts: 77

Thanks: 0
Thanked 0 Times in 0 Posts


If your head gasket is the cause of an internal coolant leak, your coolant is

a) blowing out your exhaust pipe as vapor. (This is also bad for your catalytic converter, if emissions tests are a concern in your area).
b) getting into your oil. (You can take a look at your oil dipstick to check that- if it looks like a chocolate shake...bad news, pal.)

It's cheaper to replace a bad head gasket than it is to fix all the problems that will stem from not fixing it. Fix this sooner rather than later.
"It may not always seem like you have the time to do it right- but if you don't, you will almost always have to make the time to do it again." ~me

1995 EJ1 Daily Driver (Build thread)
Project start: February 2010
Est. Completion Date: February 2020
nerofotia is offline   Reply With Quote



Similar Threads
Thread Thread Starter Forum Replies Last Post
coolant loss Cobl18 Engine Tech / Drivetrain 5 05-25-2011 02:30 PM
90 civic rough idle then smoke after warm up bludworth06 Engine Tech / Drivetrain 0 09-21-2010 11:44 PM
95 civic lx.. somewhat rough/low idle & backfiring PhatAzzCracka Tech Archive (No Posting) 5 04-07-2010 05:45 PM
Help: Unexplained coolant loss lilskater519 Engine Tech / Drivetrain 6 01-17-2010 08:29 PM
2004 Civic EX Rough Idle alex04civic 7th Generation Honda Civic (2001-2005) 7 01-21-2008 07:33 PM

Thread Tools

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 -4. The time now is 11:10 PM.

Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.

Store News:

Latest Topics:

Store Specials:

Unanswered Topics:

Copyright 2011 ClubCivic.com - ClubCivic.com is in no way affiliated with Honda Motor Company