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 06-30-2014, 04:41 PM
ljones ljones is offline
FoMoCo
 
Join Date: Oct 2010
Posts: 64
Default 1987 Ranger 2.3l Idle issues.

I've started having idle issues with the ranger. When starting the truck it idles around 1500RPM and if I rev it a couple of times it will go down to around 1000RPM with the AC on. With the AC off its just under 1000RPM. It only idles a little while until it starts surging several hundred RPMs it eventually dips down so low it dies. I replaced the IAC and I think it made it worse. What would cause this?
__________________
1987 Ranger 2.3l four banger, one wheel wonder, 5 spd manual.
Reply With Quote
  #2  
Old 06-30-2014, 06:13 PM
ljones ljones is offline
FoMoCo
 
Join Date: Oct 2010
Posts: 64
Default Re: 1987 Ranger 2.3l Idle issues.

I can unplug the IAC and it goes down to around 500RPM. What would cause the IAC to act retarded?
__________________
1987 Ranger 2.3l four banger, one wheel wonder, 5 spd manual.
Reply With Quote
  #3  
Old 06-30-2014, 06:15 PM
djfllmn djfllmn is offline
ford dealer parts guy
 
Join Date: Apr 2011
Posts: 20,770
Send a message via AIM to djfllmn
Default

Quote:
Originally Posted by ljones View Post
I can unplug the IAC and it goes down to around 500RPM. What would cause the IAC to act retarded?
dirty or bad
__________________
2016 F150 Supercrew XLT 5.0
1968 Ford Thunderbird Tudor 429 Thunderjet V8

(Click for Project Log)

traded-2007 F150 XLT Supercab 5.4
Sold:03 Sonic Blue FX4 Steppie 4.0SOHC 5spd
ranger free since 6/15/2012

Quote:
Originally Posted by Logan03CO View Post
These threads make me feel better about myself....
Quote:
Originally Posted by guell View Post
Welcome to the internet, if this is your first visit to it I suggest you stock up on a lot of preparation h cause you gonna be butt hurt a lot
Reply With Quote
  #4  
Old 06-30-2014, 06:23 PM
ljones ljones is offline
FoMoCo
 
Join Date: Oct 2010
Posts: 64
Default Re: 1987 Ranger 2.3l Idle issues.

Is this the test port for the OBD stuff? It's on the HVAC ducting above the center hump.



----------

Quote:
Originally Posted by djfllmn View Post
dirty or bad

It's brand new. The old one was dirty and worn out.
__________________
1987 Ranger 2.3l four banger, one wheel wonder, 5 spd manual.
Reply With Quote
  #5  
Old 07-01-2014, 07:38 PM
ljones ljones is offline
FoMoCo
 
Join Date: Oct 2010
Posts: 64
Default Re: 1987 Ranger 2.3l Idle issues.

I cleaned the old IAC and put it back on and got the same results. I cleaned the throttle body and sea foamed it with no improvement. All intank gaskets are new. Any ideas?
__________________
1987 Ranger 2.3l four banger, one wheel wonder, 5 spd manual.
Reply With Quote
  #6  
Old 07-01-2014, 07:40 PM
floridacracker floridacracker is offline
dogrunner
 
Join Date: Mar 2013
Posts: 1,288
Default

New IACs can come bad its not uncommon
__________________
2002 Ford Ranger EDGE: 4 inch spindle lift, 2 inch add a leaf, 33x12.5xR15 BFG All Terrrain KO2, Black bullethole steel rims, camo center console mod, diamond plate toolbox, 102 inch cb whip, tinted tails/corners, throttle cable mod, headlight mod, blinker mod, air box mod, Fog light mod.
Reply With Quote
  #7  
Old 07-01-2014, 07:58 PM
ljones ljones is offline
FoMoCo
 
Join Date: Oct 2010
Posts: 64
Default Re: 1987 Ranger 2.3l Idle issues.

Quote:
Originally Posted by floridacracker View Post
New IACs can come bad its not uncommon
The old one seamed to be fine it was just dirty.
__________________
1987 Ranger 2.3l four banger, one wheel wonder, 5 spd manual.
Reply With Quote
  #8  
Old 07-04-2014, 08:17 AM
ljones ljones is offline
FoMoCo
 
Join Date: Oct 2010
Posts: 64
Default Re: 1987 Ranger 2.3l Idle issues.

Could bad injectors cause this? They are original with 151,xxx miles on them. I get 15mpg mixed driving. What are the flow rate for the stock injectors?
__________________
1987 Ranger 2.3l four banger, one wheel wonder, 5 spd manual.
Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
1987 2.3 MPG/Running Issues. ljones 4-Cylinder Tech 1 06-08-2013 04:25 PM
1987 RANGER 2.9l IRRATIC HIGH TO LOW IDLE...ANY HELP? FATAL 2.9 Liter Tech 4 03-01-2013 10:38 AM
idle issues 95 ranger Tjo78 Introduce Yourself 1 01-02-2013 10:06 PM
1987 ranger charging issues PLEASE HELP! 199fan 2.9 Liter Tech 4 07-20-2012 01:20 PM
1987 Ford Ranger shuts off when idle or I let gas go oscararce 4-Cylinder Tech 5 04-02-2010 08:12 AM