Rough Idle In 2001 Ford Ranger - Ford Truck Enthusiasts Forums
 
Go Back   Ford Truck Enthusiasts Forums > Performance, Engines & Troubleshooting > Ford V6 > 2.6, 2.8, 2.9, 4.0 & SOHC 4.0 V6
Sign In
Register Forgot Password?


Rough Idle In 2001 Ford Ranger

Reply
 
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 08-19-2007, 10:19 AM
Diablo Kid Diablo Kid is offline
New User
 
Join Date: Aug 2007
Posts: 3
Diablo Kid is starting off with a positive reputation.
Rough Idle In 2001 Ford Ranger

Hello All,

I am having trouble with rough idle in a 2001 Ranger 4.0L. It all started like this: Truck would not crank on Monday morning as battery was dead. Got a new battery and went ahead and changed oil since I was due and late for work anyway. Filled up with gas and added fuel injector cleaner.

On the way to work, got Check Engine light and started with rough idle. Had codes scanned and got P0171 and P0174, both indicating fuel too lean. I changed fuel filter - no luck. Filled up with premium gasoline - no luck. Unplugged MAF sensor and found that engine idled fine without it. Bought new MAF and installed - no luck. Engine sounds like it wants to go dead when stopped and rocks and shakes at stop lights. Gas mileage is suffering.

Any ideas?

Thanks in advance!
Reply With Quote
  #2  
Old 08-19-2007, 06:58 PM
powerplantranger powerplantranger is offline
New User
 
Join Date: Dec 2003
Location: Texas
Posts: 12
powerplantranger is starting off with a positive reputation.
You could try to change the O2 sensor(s).. They are alot cheaper than the MAF, and it seems to me, on my little truck, that is usually the culprit. It's one of the points that tells the comupter how "lean" or "rich" the engine is running. If some crude got knocked loose than it could've "latched" onto the sensor. Some of the injector cleaners say "safe for O2 sensors" or at least all the ones I've seen do.


You'd be suprised how many times those (O2) are the answer to why it's running like crap..
Reply With Quote
  #3  
Old 08-26-2007, 05:14 PM
Diablo Kid Diablo Kid is offline
New User
 
Join Date: Aug 2007
Posts: 3
Diablo Kid is starting off with a positive reputation.
Thanks PPR! I actually found a leak on a rubber 90 degree hose that is located under the throttle assembly. It is attached to a rigid plastic/rubber line that runs the length of the valve cover on the left side when facing the engine from the front. The rubber boot elbow in to the intake. I replaced it and that has smoothed out the idle significantly. I haven't had the check engine light come back on yet, but I may see if I still have any codes that haven't been resolved.

I am still not entirely happy with the idle, but it much better than it was. If problems continue, I will be looking closer at the O2 sensors.

Thanks!
Reply With Quote
Old 08-26-2007, 05:14 PM
 
 
 
Reply


Similar Threads
Thread Thread Starter Forum Replies Last Post
Rough idle / rich exhaust Jrbursee Big Block V8 - 385 Series (6.1/370, 7.0/429, 7.5/460) 12 05-09-2014 04:24 PM
My 96 7.3 quit running. Any help would be appreciated. abherd 1994.5 - 1997 7.3L Power Stroke Diesel 50 06-14-2013 05:37 PM
MAF fuel injection swap, idle problems Reed Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W) 27 04-29-2012 08:56 AM
Rough idle and no acceleration neilr Escape & Escape Hybrid 24 10-11-2011 04:16 PM
2001 Ranger running rough mikrace Ranger & B-Series 6 01-18-2007 11:28 AM


Go Back   Ford Truck Enthusiasts Forums > Performance, Engines & Troubleshooting > Ford V6 > 2.6, 2.8, 2.9, 4.0 & SOHC 4.0 V6

Tags
01, 2001, 40, 40l, check, engine, ford, idle, idles, light, oxygen, ranger, rough, sensor, v6

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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

Forum Jump



All times are GMT -5. The time now is 07:26 PM.

 

Powered by vBulletin® Version 3.8.7 AC2
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Advertising - Terms of Use - Privacy Statement - Terms of Service - Jobs
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. FordŽ is a registered trademark of the Ford Motor Company.

vbulletin Admin Backup