High idles. - 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 08-12-2014
insistent's Avatar
Thread Starter
Join Date: Jul 2014
Location: la baie
Posts: 60
High idles.

Hello, i have some high idle problem, when warm my engine still runs at 850-900rpm. (What the ultragauge show)
I have cleaned the MAF, IAC and TB, but it didnt change anything, and i think i actually have noticed some MPG loss on my ultragauge since. And i have no check engine.

What should i look at?

I have a ranger 4.0L OHV 2000.


Last edited by insistent; 08-12-2014 at 01:47 PM.
Reply With Quote
Old 08-25-2014
smcasey88's Avatar
Level II Supporter
Join Date: Sep 2009
Location: Reno, Nv
Posts: 317
If you have not fixed this yet, take a look at your thermostat, if it is sticking open, it will try and compensate by keeping the rpm up. and since you have an ultraguage, check your engine temp, this is how I discovered mine was sticking, my scanguage showed my engine only getting up to about 150 degrees and my rpm was right around 850-900 warm also.
Reply With Quote
Old 08-25-2014
insistent's Avatar
Thread Starter
Join Date: Jul 2014
Location: la baie
Posts: 60
My engine temps is more around 200-220F, so i think the thermostat is OK.
Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
2006 ranger w/3.0 Idles High on startup buzz7453 2.9L & 3.0L V6 Tech 0 03-22-2015 09:44 AM
99 3.0 idles high bluzintx1 2.9L & 3.0L V6 Tech 5 10-14-2014 06:29 AM
98 Ranger (2.5 I4) idles, surges when given throttle Marlowe SOHC - 2.3L & 2.5L Lima Engines 6 09-21-2008 01:26 AM
my 2000 ranger 3.0L idles high Mex760 2.9L & 3.0L V6 Tech 5 07-01-2008 12:21 PM
Idles rough, and hard to start, Help!! BOxford32 2.9L & 3.0L V6 Tech 2 02-23-2008 07:29 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 Off
Pingbacks are Off
Refbacks are Off

All times are GMT -6. The time now is 11:34 PM.

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.