Engine Misfire - Ranger-Forums - The Ultimate Ford Ranger Resource

4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

LinkBack Thread Tools Search this Thread
Old 01-18-2010
Thread Starter
Join Date: Jun 2009
Location: Saltville, VA
Posts: 3
Engine Misfire

Anbody have any suggestions. Ive got a 91 ranger w/ 4.0liter. Idles fine and seems to do ok if you a light on the throttle. If you get on the throttle it feels like you a losing a cylinder. ive replaced plugs, coil, checked maf sensor (data within spec). Wire were replaced not to long ago. could i still possibly have a bad wire.
Reply With Quote
Old 01-18-2010
powerranger262's Avatar
iTrader: (1)
Join Date: Feb 2009
Location: Hartford, WI
Posts: 1,222
I have had the same thing. I just got done cleaning the throttle body, MAF, intake tube, and the IAC. It's gone as far as I can tell, definately runs a lot smoother. I'll get to drive a little bit more tomorrow to see if it is completly gone.
Reply With Quote
Old 01-18-2010
Join Date: Mar 2007
Location: Upstate,NY
Posts: 2,598
I had this on a Dodge V8.
Moisture had gotten in the fuel system and over time had caused rust particles to build up and plug an injector. It would pass enough fuel at idle and light throttle but hard throttle it would drop a cylinder.
I fixed it by removing the injectors and using carb cleaner with the extension tube ,blow the crap out of the input side of the injector.

edit to add
Change the fuel filter if you haven't already

Last edited by OTRtech; 01-19-2010 at 10:56 AM.
Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
engine misfire? crackerskwirl36 2.9L & 3.0L V6 Tech 4 04-19-2010 10:57 PM
Engine Misfire mnattymagee General Technical & Electrical 2 02-13-2010 01:57 PM
99 3.0 engine Misfire RangerJacoby99 2.9L & 3.0L V6 Tech 3 04-16-2009 08:35 PM
help misfire after i washed engine? vic 2.9L & 3.0L V6 Tech 3 08-13-2006 01:37 PM
Engine misfire???? phatspeed7x 4.0L OHV & SOHC V6 Tech 4 07-02-2006 09:08 AM

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 Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

All times are GMT -6. The time now is 01:27 AM.

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.