97 Ranger rough Idle - Ranger-Forums - The Ultimate Ford Ranger Resource
Ford Ranger Forum - Forums for Ford Ranger enthusiast!

Go Back   Ranger-Forums - The Ultimate Ford Ranger Resource Arrow Ranger-Forums Technical Engine Forum Arrow 2.3L & 2.5L I4 Tech Arrow SOHC - 2.3L & 2.5L Lima Engines

SOHC - 2.3L & 2.5L Lima Engines Discussions and Topics specific to the Lima 4 cylinder engines

LinkBack Thread Tools Search this Thread
Old 01-12-2014
Thread Starter

I am: Jason Wachob
Join Date: Jan 2014
Location: Sandy, UT
Vehicle: 1997 Ford Ranger
Drive Type: 4x2
Engine: 2.3
Posts: 1
Total Props: 0
97 Ranger rough Idle

I have a 97 Ford Ranger 2.3 5 speed manual. I just changed my thermostat and decided to change out my spark plugs while I was at it. I got everything back together but now when idling it acts like its going to die then revs up. It continues this cycle. I also noticed that as I was driving my brakes would go in and out. I'm assuming this is a side effect of the engine revving.
ANY IDEAS?? I'm stuck!
Reply With Quote
+ 0 -
Old 01-14-2014
sheltonfilms's Avatar
I am: Anthony Shelton
Join Date: Apr 2010
Location: Knoxville, TN
Vehicle: 2000 Ford Ranger
Posts: 622
Total Props: 6
Your vacuum line from the intake manifold to the brake booster ok?

Any hissing sounds?
Reply With Quote
+ 0 -
Old 02-28-2014
dirtrunner21's Avatar
I am: Robert Wright
Join Date: Dec 2006
Location: Palm Springs, CA
Vehicle: 1996 Ford Ranger
Drive Type: 4X2
Engine: 2.3
Posts: 37
Total Props: 0
Sounds like a vacuum leak. I had a similar problems on mine which turned out to be a unplugged hose. Simple solution is take "carb cleaner" and spray around the engine in small spurts, when the engine start to rev high (carb cleaner goes into engine and boost ignition) you should be around the area where the leak could be.
Reply With Quote
+ 0 -
Old 02-28-2014
pearlkid9988's Avatar
I am: Chris Clayton
Join Date: Dec 2008
Location: Newnan Georgia
Vehicle: 2003 Ford Ranger STX blend
Drive Type: 4x2
Engine: 3.0
Posts: 828
Total Props: 0
check your plug gaps as well since you changed them they may be off a bit.
Reply With Quote
+ 0 -
Old 03-07-2014
I am: Chris
Join Date: Mar 2014
Location: Mount Pleasant
Vehicle: 1997 Ford Ranger XLT
Drive Type: 4x2
Engine: 2.3
Posts: 9
Total Props: 0
If you havent already, definitely check the vacuum lines. I had one pop off of, I believe its called the EGT valve. Looks like a flying saucer at the back of your engine near your intake manifold. Mine was old and dry rotted so it wasnt sealing right. Once I fixed that it ran perfectly.
Reply With Quote
+ 0 -

Similar Threads
Thread Thread Starter Forum Replies Last Post
2003 3.0 Ranger - rough low idle (400 rpm), bogs at 2500K, rough shift, NOW FINE ChargerOnDavins 2.9L & 3.0L V6 Tech 3 03-23-2015 03:25 PM
1995 rough idle/slow return to idle whiskeybreath SOHC - 2.3L & 2.5L Lima Engines 1 11-27-2014 04:06 PM
96 ranger rough idle 96ranger SOHC - 2.3L & 2.5L Lima Engines 1 05-24-2010 06:35 PM
90 Ranger, rough idle and seems rich. jz 4.0L OHV & SOHC V6 Tech 0 05-14-2009 09:42 PM
99 Ranger Rough Idle CEL Codes Xer0Crash General Technical & Electrical 9 04-09-2008 01:18 PM

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 On
Pingbacks are On
Refbacks are On

All times are GMT -6. The time now is 12:22 AM.