Engine & Internal Chat about beefing up your engine's insides here.

Misfire please help!!

  #1  
Old 01-26-2007, 10:55 AM
Thread Starter
Join Date: Jan 2007
Posts: 4
Default Misfire please help!!

Hi, I'm new. I have an 89 civic that I've started having some misfire issues with. It basically started when the ECU threw a water temperature sensor code. I reset the ECU and the code hasn't come back for about 600 miles, but it started misfiring. It will only misfire once it's completely warmed up, and it will only misfire at low throttle positions (maybe 10%) and it's worse when accelerating. Sometimes the idle is pretty rough too. I cleaned out the IACV (EACV) but it didn't seem to solve the problem. I've also put in a can of Sea-Foam, but it hasn't really fixed it either.

Please help, I'm driving to Nevada next week (2000 miles) and I want the car to make it.
 
  #2  
Old 01-26-2007, 02:09 PM
Join Date: Nov 2004
Location:
Posts: 1,396
Default RE: Misfire please help!!

Could be a few things:
[ul][*]Spark plugs need changing[*]You need new plug wires[*]Vacuum Sucks- not literally[*]Timing is off[*]Bad compression
[/ul]
 
  #3  
Old 01-26-2007, 02:18 PM
Thread Starter
Join Date: Jan 2007
Posts: 4
Default RE: Misfire please help!!

I didn't think of it until just now, but we had the valve cover off just before the car started having issues. Is there a potential for a vac. leak through the valve cover? I know on my other car (1984 CJ7) the valve covers don't have much to do with manifold vac., but not sure on the B15.
 
  #4  
Old 01-26-2007, 02:38 PM
HCF Member
Join Date: Aug 2006
Location:
Posts: 1,479
Default RE: Misfire please help!!

Breather hose. The only thing that is related to vaccum. But I don't think it would be a problem. You might accidentally damaged/disconnected something else. Worth checking for loose plugs/hoses around the engine I think.
 
  #5  
Old 01-26-2007, 05:04 PM
Thread Starter
Join Date: Jan 2007
Posts: 4
Default RE: Misfire please help!!

I decided to buy a new coolant temperature sensor for $30. I'll put it in tomorrow and see how it goes.
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
MaximusFunk
Mechanical Problems & Technical Chat
4
04-10-2011 08:18 AM
JakeyMan07
Engine & Internal
5
10-03-2008 08:41 AM
dimension4
Mechanical Problems & Technical Chat
3
01-26-2007 06:40 PM
pendleton
Engine & Internal
4
09-17-2006 04:40 PM
redcivic99
Mechanical Problems & Technical Chat
6
08-29-2005 09:50 PM


Thread Tools
Search this Thread
Quick Reply: Misfire please help!!


Advertising
Featured Sponsors

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.