problems... - 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 Forum Arrow General Technical & Electrical

General Technical & Electrical General technical and electrical discussion for the Ford Ranger that does not fit in any other sub-forum.

LinkBack Thread Tools Search this Thread
Old 02-02-2016
Thread Starter

I am: Bob Dewater
Join Date: Jan 2016
Location: Holton Kansas
Vehicle: 1988 Ford Ranger xlt
Drive Type: 4x4
Engine: 2.3
Posts: 9
Total Props: 0

88 4x4 2.3 FI
starts fine, idle is a bit high 1200+ when driving, often will seem to loose power, sputters, not pop or backfire, at any speed, hit the clutch an gas peddle and seems to straighten up...briefly and repete .
unable to determine if electrical " ignition" or fuel delivery related.
new fuel filter, new TPS, new ign module, cap, rotor, ign coil, new fuel pres reg, MPG is miserable, no initial vac leaks detected.
really need help with this one.
what are the chances injectors plugged up ??
Reply With Quote
+ 0 -
Old 02-02-2016
iTrader: (1)
I am: Ron Dean
Join Date: Jan 2014
Location: Vancouver, BC
Vehicle: 1994 Ford Ranger
Drive Type: 4x4
Engine: 4.0
Posts: 4,739
Total Props: 88
Seafoam(or similar) in the gas tank once a year will keep fuel injector tips clean.

But no that wouldn't be the problem, dirty injectors don't get better.

Pull out a few spark plugs and look at the tips, very light brown means engine is running with good air/fuel mix, darker brown or blackish means running rich.
If plugs are dark then that's the drop in MPG, if they look good then you have a leak in fuel system somewhere, or a neighbor with a siphon hose, lol.

High idle is normal cold, and after warm up when coasting above 5mph.
But after warm up and stopped idle should be down around 800rpm for 2.3l, automatic trans vehicles idle higher than manual trans.
After engine is warmed up unplug the IAC valve, rpms should drop to 500 or engine may even stall, either is good it means no vacuum leaks, if idle stays high then you have a vacuum leak, or someone messed with the anti-dieseling screw thinking it was an idle screw.

Next would be to check fuel pressure at idle then at steady 2,500rpm for a 2 minutes see if it is dropping.
Reply With Quote
+ 0 -

Similar Threads
Thread Thread Starter Forum Replies Last Post
Clutch problems or Motor problems? Or both? JGod General Ford Ranger Discussion 3 02-08-2014 06:35 AM
Clutch problems...possibly?!?!? Help?? ZetaOmegaRanger 2.9L & 3.0L V6 Tech 2 01-04-2008 01:47 AM
Door dinger mod... now problems with blinkers? Zero General Technical & Electrical 4 09-28-2004 10:35 AM
Amp problems Skyjacker_44 Audio & Video Tech 3 08-31-2004 08:52 AM
Driver's side seat belt problems... 98blackranger Interior Semi-Tech 6 06-24-2004 01:07 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 04:40 AM.