Notices
Explorer, Sport Trac, Mountaineer & Aviator 1991-1994, 1995-2001, 2002-2005, 2006-2010 Ford Explorer

'91 Exploere Idle problem

Thread Tools
 
Search this Thread
 
Old Aug 30, 2009 | 11:43 PM
  #1  
willworkforbeer's Avatar
willworkforbeer
Thread Starter
|
New User
Joined: Sep 2006
Posts: 15
Likes: 0
'91 Exploere Idle problem

My friend just bought a '91 exploere. It will idle for about 5 minutes then dies, we have cleaned the MAF Sensor, T/B & IAC, fuel pressure is about 34 pounds, when it starts stumbling fuel pressure goes up to about 39 pounds but it still dies. What else should I be looking at?
Sorry about the spelling. I have a '92 Ranger that we used for comparison purposes, every thing seems to match up.
Any help would be greatly appreciated.
 
Reply
Old Aug 30, 2009 | 11:49 PM
  #2  
willworkforbeer's Avatar
willworkforbeer
Thread Starter
|
New User
Joined: Sep 2006
Posts: 15
Likes: 0
Whoops, forgot to say it is a 4.0 engine his is 4wd mine is 2wd.
 
Reply
Old Aug 31, 2009 | 06:54 AM
  #3  
shorod's Avatar
shorod
Logistics Pro
15 Year Member
Photogenic
Liked
Loved
Joined: Jun 2009
Posts: 4,808
Likes: 83
From: Cedar Rapids, IA
You should be checking for vacuum leaks. The 4.0L is pretty well known for intake gasket leaks as well as a PCV elbow. Try searching the forum for details.

-Rod
 
Reply
Old Aug 31, 2009 | 09:43 AM
  #4  
mrshorty's Avatar
mrshorty
Postmaster
Joined: Dec 2001
Posts: 3,742
Likes: 2
From: UT
In addition, I might pull code from the computer and see what faults the PCM can see in case that would help narrow down the diagnosis.
 
Reply




All times are GMT -5. The time now is 01:30 AM.

story-0
Ford's 2001 Explorer Sportsman Concept Looks For a New Home

Slideshow: Ford's bizarre fishing-themed Explorer concept has resurfaced after spending decades largely forgotten.

By Verdad Gallardo | 2026-05-12 18:07:46


VIEW MORE
story-1
10 Best Ford Truck Engines We Miss the Most!

Slideshow: The 10 best Ford truck engines we miss the most.

By Joe Kucinski | 2026-05-12 13:09:47


VIEW MORE
story-2
2026 Shelby F-150 Off-Road: Better Than a Raptor R?

Slideshow: first look at the 810 hp 2026 Shelby F-150 Off-Road!

By Brett Foote | 2026-05-12 12:50:07


VIEW MORE
story-3
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

Slideshow: Everything You Need to Know about the 2027 Super Duty Carhartt Package!

By Michael S. Palmer | 2026-05-07 17:51:06


VIEW MORE
story-4
10 Most Surprising 2026 Ford Truck Features!

Slideshow: 10 most surprising Ford truck options/features in 2026.

By Joe Kucinski | 2026-05-05 11:17:22


VIEW MORE
story-5
Top 10 Ford Trucks Coming to Mecum Indy 2026

Slideshow: Here are the top 10 Fords coming to Mecum Indy 2026.

By Brett Foote | 2026-05-04 13:49:49


VIEW MORE
story-6
5 Best / 5 Worst Ford Truck Wheels of All Time

Slideshow: The 5 best and 5 worst Ford truck wheels of all time

By Joe Kucinski | 2026-04-29 16:49:01


VIEW MORE
story-7
Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!

Slideshow: Ranking the 5 things owners love about their Super Duty and 5 things they don't

By Joe Kucinski | 2026-04-29 16:36:49


VIEW MORE
story-8
Every 2026 Ford Truck Engine RANKED from WORST to FIRST!

Slideshow: Ranking all 12 Ford truck engines available in 2026.

By Michael S. Palmer | 2026-04-22 13:32:20


VIEW MORE
story-9
The Best F-150 Deal of Every Trim Level (XL through Raptor)

Slideshow: The best Ford F-150 deal for every trim level (XL through Raptor)

By Joe Kucinski | 2026-04-21 15:59:01


VIEW MORE