Ford Ranger Forum - Forums for Ford Ranger enthusiasts!

Go Back   Ford Ranger Forum - Forums for Ford Ranger enthusiasts! > Engine Tech Forum > 6-Cylinder Tech > 4.0 SOHC / 4.0 OHV Tech
Forgot Password? Join Us!


Reply
 
LinkBack Thread Tools Search this Thread

  #1  
Old 08-19-2010, 11:38 AM
Learning to use the forums
 
Join Date: Aug 2010
Posts: 1
Default engine revving on its own

I have a 99 ford ranger with a V6 4.0 engine. recently i have noticed that, when the engine is idling, every 10 to 15 seconds it will rev up to slightly above 1000 rpm and then go back down to normal. The engine will do this if it is in drive, neutral, reverse, or park and it seems like i have been going through gas much faster. does anyone know what is wrong or if anything is wrong at all?
Reply With Quote
  #2  
Old 08-19-2010, 11:58 AM
Banned
 
Join Date: Mar 2010
Posts: 14,058
Default Re: engine revving on its own

Does it sound like the rpm revving like the ac was on?
Reply With Quote
Reply

Tags
engine, idle, revving

Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
2001 Ranger - Engine Knock / Oil Pressure Gauge / Engine Light zomgtehpwn 4-Cylinder Tech 7 01-06-2012 04:27 PM
v6 engine problems rough idle engine boggs casey 3.0 Vulcan Tech 5 04-13-2011 01:53 AM
engine rebuild. or engine swap smsranger Other Engine Tech 13 03-15-2010 09:08 PM
1989 2.3L engine HPvs 2004 2.3L engine HP? Kitsap 4-Cylinder Tech 4 12-02-2009 02:25 PM
not revving high baldy3220 4-Cylinder Tech 2 08-26-2009 09:01 PM



Search Engine Friendly URLs by vBSEO 3.6.0 ©2011, Crawlability, Inc.