Rough idle. - Page 2 - JeepForum.com

Reply
 
LinkBack Thread Tools
post #16 of 21 Old 08-11-2010, 09:36 PM
Sundowner
Registered User
2003 TJ Wrangler 
 
Join Date: May 2009
Location: The Republic of Dave
Posts: 6,408
Anyone checked for vacuum leaks yet?


If it's worth doing, then it's worth overdoing.

The Republic of Dave: Bringing you the finest in simian testing supplies.

The build, the gear, and the mileage: The Wasteland Survival Guide
Sundowner is offline  
Sponsored Links
Advertisement
 
post #17 of 21 Old 08-12-2010, 11:27 AM Thread Starter
2006_Sport
Registered User
2006 TJ Wrangler 
 
Join Date: Feb 2009
Location: Sherrills Ford
Posts: 10,823
A interesting development today. I decided to head to the hardware store down here to grab some TB cleaner so I can get to work. Rough idle starts and whatnot and it pisses me off. I decided to floor it a few times...okay cool. Then I drove on the beach in 4wd for like 25-30 mins. Now I've been driving for about an hour. I get home and usually when I get home that rough idle is there before I turn the jeep off. I sit there for 30 seconds and nothing, smooth idle.

I'm gonna go out again later today and see if it does it again. But I will start cleaning stuff when I get home.
2006_Sport is offline  
post #18 of 21 Old 08-12-2010, 11:33 AM
gcrv01tj
Registered User
2005 LJ Wrangler 
 
Join Date: Aug 2009
Location: Richmond
Posts: 361
i would give seafoam a try since its only $10. it cant hurt and it made my engine run a lot smoother.
gcrv01tj is offline  
post #19 of 21 Old 08-21-2010, 02:05 AM
b912
Registered User
2007 JK Wrangler 
 
Join Date: Jun 2010
Location: Ohio
Posts: 85
You just made me put two and two together here. Last week I went from mechanically sound to not being able to start. It would turn over, catch, then sputter like a model T at just a few hundred RPMs and die. Once I finally got it started, it ran but I could tell that it was missing and had a definate loss of power. After a day with no codes, I take it to my friends shop 20 minutes away and get a check engine light in his driveway telling me po320 (CKP) and multiple misfire codes. That side tracked us from what the problem actually was which was a busted coil wire. I probably had 45 minutes of trying to get it started and it was the most aweful sounding, no RPM, out of time 45 minutes you've ever heard. I checked the coil wire and it broke in my hand. Bought a distributor cap, rotor, plugs, and wires. The second I replaced the coil wire, it fired right up. Did everything correctly but ever since the tune up I've been having a rough idle (no RPM movement, just a miss) and sluggish power. After searching all night, I was headed to the store in the morning for some throttle body cleaner and seafome to clean the intake and IAC. Sounds like I might just have carbon buildup from running so poorly for two days. On the way to the parts store, I'll give'r hell and blow out that carbon. Sound like I'm on the right track?
b912 is offline  
post #20 of 21 Old 08-21-2010, 03:58 PM
gcrv01tj
Registered User
2005 LJ Wrangler 
 
Join Date: Aug 2009
Location: Richmond
Posts: 361
Quote:
Originally Posted by b912 View Post
You just made me put two and two together here. Last week I went from mechanically sound to not being able to start. It would turn over, catch, then sputter like a model T at just a few hundred RPMs and die. Once I finally got it started, it ran but I could tell that it was missing and had a definate loss of power. After a day with no codes, I take it to my friends shop 20 minutes away and get a check engine light in his driveway telling me po320 (CKP) and multiple misfire codes. That side tracked us from what the problem actually was which was a busted coil wire. I probably had 45 minutes of trying to get it started and it was the most aweful sounding, no RPM, out of time 45 minutes you've ever heard. I checked the coil wire and it broke in my hand. Bought a distributor cap, rotor, plugs, and wires. The second I replaced the coil wire, it fired right up. Did everything correctly but ever since the tune up I've been having a rough idle (no RPM movement, just a miss) and sluggish power. After searching all night, I was headed to the store in the morning for some throttle body cleaner and seafome to clean the intake and IAC. Sounds like I might just have carbon buildup from running so poorly for two days. On the way to the parts store, I'll give'r hell and blow out that carbon. Sound like I'm on the right track?
I don't think you need to redline the crap out of it but I am sure you have some sort of carbon buildup. Let us know how it goes!
gcrv01tj is offline  
post #21 of 21 Old 08-21-2010, 10:24 PM
b912
Registered User
2007 JK Wrangler 
 
Join Date: Jun 2010
Location: Ohio
Posts: 85
For once...it goes well. When I did the tune up, it was too hot for me and I ended up doing the distributor, rotor, and plug wires but not the plugs. (i know....) The next evening, I replaced the plugs one at a time and the plug wire closest to the grill is an absolute bear to get off with an AC compressor in the way. I foolishly used channel locks in a way that I thought I was being carefull. Thinking that could be the cause, I tried to remove the wire today to inspect it and the wire came right out of the boot. Bought another set of wires and replaced just that one and my misfire/rough idle problem cleared up 85%. Taking the advice of several users on the forum and knowing how bad it had been running, I also bought some seafome. Put 2/3 in the gas tank and sucked the other 1/3 up through the break master cylinder vacume line. I filled the neighborhood with white smoke and 5 minutes later, she's purring like a kitten. I can't believe what a difference that stuff made! This site is just great for the slightly less mechanically inclined like myself.
b912 is offline  
Reply

Tags
rough , idle

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.



Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
Rough Idle ru2bz4fun TJ Wrangler Technical Forum 21 05-20-2010 06:23 PM
Idle Air Controller - Trying to Clean for Rough Idle - Need Help JBWood05TJ TJ Wrangler Technical Forum 21 08-24-2008 06:40 AM
2.4l rough idle vargeg60 TJ Wrangler Technical Forum 1 03-06-2007 04:06 PM
Rough Idle 91 YJ 6 cyl Kmg3356 YJ Wrangler Technical Forum 4 04-09-2004 05:57 PM
Carter BBD fix for No Idle or Rough Idle ScotZ YJ Wrangler Technical Forum 0 03-26-2003 09:26 PM

Posting Rules  
You may post new threads
You may 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 Off
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome