Running weird - 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 07-08-2014
Thread Starter
Join Date: Feb 2014
Location: Jacksonville, Florida
Posts: 7
Running weird

Sup guys. I have a '94 splash. 4.0 5 spd. I get this strong smell of gas. Terrible gas mileage and low power. I've cleaned all sensors and replaced plugs, wires and coil. I got improvement from the tune up but it's still not 100%. Haven't reset the computer yet, since I never have the time. Also I feel like it goes into limp mode if it's hot outside if I go reasonably far. Looking for some guidance cuz I'm a complete noob. Thanks for any help guys!
Reply With Quote
Old 07-08-2014
RF Veteran
iTrader: (1)
Join Date: Jan 2014
Location: Vancouver, BC
Posts: 7,601
On the fuel rail find the Fuel Pressure regulator(FPR), on 4.0l should be front passenger side of engine.
It will have a fuel line and vacuum line connected, remove this vacuum line and check it for fuel or fuel smell, if fuel is there replace FPR, it's diaphragm is leaking and raw fuel is being sucked into intake when engine is running, and you would smell fuel when engine is off.

How many miles on the vehicle?
O2 sensors are good for about 100k, they wear out like spark plugs do, but it wouldn't be a sudden change, as they wear out engine will run richer.
Reply With Quote
Old 07-08-2014
Thread Starter
Join Date: Feb 2014
Location: Jacksonville, Florida
Posts: 7
I guess it's 155k. Odometer doesn't go into 100k's. So fuel pressure regulator is your bet? Thanks man. I'll check it out.

This is my first ford. CEL isn't on when running. But is on when key is turned forward.
Reply With Quote
Old 07-08-2014
C_Red90's Avatar
Join Date: Jul 2014
Location: Overland Park
Posts: 36
The CEL and various other lights will either turn on and turn off, or stay on, when the key is put in the ON position. This is to allow the driver to make the sure these lamps/fuses/systems are working, so that you don't "drive blind" to any problems.
Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
weird Running Issues bruiser 2.3L & 2.5L I4 Tech 5 04-20-2010 08:46 AM
'94 Ranger running weird shortbed4banger SOHC - 2.3L & 2.5L Lima Engines 6 04-08-2009 05:38 PM
did a little off-roading..weird noise.. yellerEDGEchick General Ford Ranger Discussion 19 12-08-2004 05:00 PM
weird bumper Idea Skyjacker_44 New Ideas 2 09-25-2004 12:51 AM
sumthin weird ravensedge Ranger-Forums Office 14 07-01-2004 04:51 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 01:27 AM.

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 and affiliated sites.