Ford Ranger Forum - Forums for Ford Ranger enthusiasts!

Go Back   Ford Ranger Forum - Forums for Ford Ranger enthusiasts! > > >
Forgot Password? Join Us!

Welcome to Ford Ranger Forum

Reply
 
Thread Tools Search this Thread

  #1  
Old 07-21-2014, 06:55 AM
Rifleman Rifleman is offline
Learning to use the forums
 
Join Date: Jan 2014
Posts: 4
Default 94 Ranger Accelerating Problem

I have a 1994 4.0...4x4...5 speed with 242k on it. Over the past few months I have noticed when accelerating that I have the occasional "pop" or "hiccup" like the engine is stuttering or missing. It is a very quick pop and is usually only if I really get into the gas like going up a hill or beating traffic. It may be one pop or it may be a sequence. It is not like a backfire coming out of the exhaust...but instead like the motor is choked up in some way. I honestly do not know much of anything about the fuel injection or any of the computer censors. So far I have replaced the fuel & air filter since they both needed it and to see if I could get lucky and that solve the problem...but it hasn't.

I have also noticed this problem is greatly exaggerated in warm muggy weather and when I have been doing highway driving with consistent higher speeds and revs for a sustained amount of time. My daily commute for work is about 15 miles of highway driving between 60-65 mph around 2000-2300 rpms. Once I immediately get off the highway and come to a stop anywhere and then take off, the "pop" or "hiccup" is at its very worst as I accelerate through the gears. At this point the missing makes the whole truck shake and is not just one but definitely a sequence of pops and hiccups. At idle the truck is perfectly fine. The problem is only when accelerating.

This problem is hardly noticeable if the weather is cooler or if I am just driving at speeds of 45 mph or slower. Any ideas on what I have going on?

Last edited by Rifleman; 07-21-2014 at 07:32 AM.
Reply With Quote
  #2  
Old 07-21-2014, 06:59 AM
Futurefd Futurefd is offline
Last one to let you down
 
Join Date: Jul 2012
Posts: 3,166
Default Re: 94 Ranger Accelerating Problem

sounds like a vacuum leak
Reply With Quote
  #3  
Old 07-21-2014, 07:40 AM
Jswifto Jswifto is offline
Ford Ranger Driver
 
Join Date: Dec 2013
Posts: 1,532
Default

If it is popping in the intake then it is an ignition problem. Try changing your plugs
__________________
1999 Ranger 4.0 and extreme Snap-on tool fetish
Reply With Quote
  #4  
Old 07-21-2014, 08:00 AM
Futurefd Futurefd is offline
Last one to let you down
 
Join Date: Jul 2012
Posts: 3,166
Default Re: 94 Ranger Accelerating Problem

true, when did you last change your pluggs?

come 2 think of it, my 94 4.0 had a similar issue ...and i had a bad plug. start there.

i retract my earlier statement
Reply With Quote
  #5  
Old 07-21-2014, 08:08 AM
Rifleman Rifleman is offline
Learning to use the forums
 
Join Date: Jan 2014
Posts: 4
Default Re: 94 Ranger Accelerating Problem

The spark plugs were next on my list of updates to give.

They have most definitely not been changed in the 7 years I've had the truck. My father in law had it before me and I don't think he ever changed them either. That dates the plugs back to at least the 90s...LOL
Reply With Quote
  #6  
Old 07-21-2014, 08:28 AM
Futurefd Futurefd is offline
Last one to let you down
 
Join Date: Jul 2012
Posts: 3,166
Default Re: 94 Ranger Accelerating Problem

yea over due.
Reply With Quote
  #7  
Old 08-01-2014, 05:38 AM
Rifleman Rifleman is offline
Learning to use the forums
 
Join Date: Jan 2014
Posts: 4
Default Re: 94 Ranger Accelerating Problem

UPDATE:

I changed my plugs and wires and the problem is solved. Truck has ran perfect since and all is well.
Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Ranger hesitates while Accelerating any gear. C150Pilot General Ford Ranger Discussion 4 03-22-2014 03:04 PM
Cylinder 1 misfire when accelerating, 06 Ranger 2.3L Phatty 4-Cylinder Tech 7 02-10-2013 10:59 AM
Help! Ranger accelerating on its own! jdcanter13 3.0 Vulcan Tech 4 01-10-2013 10:22 AM
idles rough n surges slighty when accelerating 01 ranger 4cy 5 speed gator 4-Cylinder Tech 11 04-02-2012 07:01 PM
Problem accelerating bLinker 4.0 SOHC / 4.0 OHV Tech 16 02-23-2011 09:54 AM