Serious Explorations Ford Explorer and Ranger Message Board
#1 Resource for Ford Explorer and Ranger Owners - By Enthusiasts, for Enthusiasts.


Ford Explorer Generation Guide

EF Swag Store 2016 Ford Explorer Forums Elite Membership Chat Room My Posts Reviews Explorer Photo Gallery
Go Back   Ford Explorer and Ranger Forums "Serious Explorations" > Ford Explorer Ranger Repair - Troubleshooting - Modifications & Detailing Forums > Elite Explorer 911!

Notices

Elite Explorer 911! 911! is for situations where your truck is currently out of commission and the owner is in a crisis situation. Members will try to answer your questions asap, no time frame is guaranteed. Only Elite Explorers can post new threads in this forum

Hesitation/missing under acceleration

Reply
 
Thread Tools
Old 08-13-2004, 06:57 PM   #1
yosh18981898
Chana IL
92 sport 4x4
 
Join Date: Oct 2003
Posts: 684

Vehicle Specs

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Original Poster)
Hesitation/missing under acceleration

About 2 weeks ago my x started to get this really annoying hesitation/miss under acceleration. I looked under the hood and found that the air intake hose had partially slipped off of the mass air flow sensor, so I put it back on. A day later the problem was back so I looked under the hood again and found that I had forgoten to re-attach the PCV vaccum hose to the air intake, I did this as well as tightened up a loose spark plug wire. The X then ran great until yesterday when the problem came back again, this time I can't find anything under the hood that is not put together right, everything looks good. I put new plugs, wires, a PCV valve, and fuel filter in about a year or 25,000 miles ago so I doubt that any of these parts are the culprit. I am going to test the ignition coil as soon as my dad gets home with his test meter. The check engine light hasn't come on so a code reader won't do me any good. Anyone have any ideas???




__________________
'92 Explorer Sport - M5OD, 2" lift, 31" A/T, PVC Intake, Flowmaster Exhaust, Custom bumpers on both ends, swapped from 41 (open 3.27) to D4 axles (LS 3.73) rocker panels are now gone! 145,000 miles

'90 Ranger S - 2.3L dual-plug I-4, M5OD, 2wd, 25 MPG, tan leather interior out of a 94 E.B, custom rear bumper, 235,000 miles and doesn't even leak oil!

Mechanical Engineering @ Northern Illinois University
yosh18981898 is offline   Reply With Quote
( Join the Elite Explorers )

Join the Elite Explorers for only $20 a year. Explorer Forum has probably saved you that much already, and will continue to save you money as you learn how to diagnose and fix problems yourself, and learn which modifications really work without having to experiment on your own. Elite Explorer members can change the forum "styles" to eliminate most ads, including blue underlined links, and no ads on photos. Other benefits include the ability to store 1000 Private Messages, upload photo attachments directly to your posts and to our Photo Gallery and more. Join the Elite Explorers today.


Old 08-13-2004, 08:44 PM   #2
yosh18981898
Chana IL
92 sport 4x4
 
Join Date: Oct 2003
Posts: 684

Vehicle Specs

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Original Poster)
I just tested the ignition coil. The primary (between pins on the control connector) measured fine, but the secondary (between corresponding spark plug wire terminals) measured at 14.8K Ohms between 1 and 5, 14.75K Ohms between 3 and 4, and 14.7K Ohms between 2 and 6. The haynes manual says it should be between 6.5K and 11.5K Ohms. Does this warrant replacing the coil? I don't imagine that it is all that cheap. Does this sound like the cause of my problem or should I look else where? Any help or guesses would be appreciated.




__________________
'92 Explorer Sport - M5OD, 2" lift, 31" A/T, PVC Intake, Flowmaster Exhaust, Custom bumpers on both ends, swapped from 41 (open 3.27) to D4 axles (LS 3.73) rocker panels are now gone! 145,000 miles

'90 Ranger S - 2.3L dual-plug I-4, M5OD, 2wd, 25 MPG, tan leather interior out of a 94 E.B, custom rear bumper, 235,000 miles and doesn't even leak oil!

Mechanical Engineering @ Northern Illinois University
yosh18981898 is offline   Reply With Quote
Old 08-13-2004, 09:25 PM   #3
Ru Dawg
Elite Explorer
Wyomissing, PA
 
Ru Dawg's Avatar
'95 XLT
 
Join Date: Jul 2000
Posts: 960

Vehicle Specs

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I've never worked on an ignition coil before, but I have worked with lots of electric motors and generator windings. Dirt is one of the worst enemies of windings.
Is it possible to get to the coil and clean it with low pressure air? You'll want to use less than 40psi of air to prevent damage to the coil laminations.
If you need a new one, here's a link to order one:
http://www.parts.com/partlocator/ind...92&catalogid=1




__________________
Dave's Truck
My Truck Enjoying the Beach!!
Explorers don't kill people...people kill Explorers!!!
Can't sleep....clowns will eat me!!
Ru Dawg is offline   Reply With Quote
Old 08-13-2004, 10:14 PM   #4
yosh18981898
Chana IL
92 sport 4x4
 
Join Date: Oct 2003
Posts: 684

Vehicle Specs

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Original Poster)
Autozone has 'em for $79.99. I really don't want to try and take it apart, from what I can see, it is pretty well sealed, and I can't see any bolts or other fastners to take it apart.




__________________
'92 Explorer Sport - M5OD, 2" lift, 31" A/T, PVC Intake, Flowmaster Exhaust, Custom bumpers on both ends, swapped from 41 (open 3.27) to D4 axles (LS 3.73) rocker panels are now gone! 145,000 miles

'90 Ranger S - 2.3L dual-plug I-4, M5OD, 2wd, 25 MPG, tan leather interior out of a 94 E.B, custom rear bumper, 235,000 miles and doesn't even leak oil!

Mechanical Engineering @ Northern Illinois University
yosh18981898 is offline   Reply With Quote
Old 08-13-2004, 11:57 PM   #5
yosh18981898
Chana IL
92 sport 4x4
 
Join Date: Oct 2003
Posts: 684

Vehicle Specs

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Original Poster)
Come on guys, the 911 forum is supposed to move a lot faster than this. I can't stand driving the X like this in its sad state one more day. I guess I'll go to bed now and hope there are some helpful replies in the morning.

Thanks again




__________________
'92 Explorer Sport - M5OD, 2" lift, 31" A/T, PVC Intake, Flowmaster Exhaust, Custom bumpers on both ends, swapped from 41 (open 3.27) to D4 axles (LS 3.73) rocker panels are now gone! 145,000 miles

'90 Ranger S - 2.3L dual-plug I-4, M5OD, 2wd, 25 MPG, tan leather interior out of a 94 E.B, custom rear bumper, 235,000 miles and doesn't even leak oil!

Mechanical Engineering @ Northern Illinois University
yosh18981898 is offline   Reply With Quote
Old 08-15-2004, 09:43 AM   #6
yosh18981898
Chana IL
92 sport 4x4
 
Join Date: Oct 2003
Posts: 684

Vehicle Specs

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Original Poster)
I thought bumping was for the "For Sale, Trade, and Wanted" forum but here goes anyways:

bump




__________________
'92 Explorer Sport - M5OD, 2" lift, 31" A/T, PVC Intake, Flowmaster Exhaust, Custom bumpers on both ends, swapped from 41 (open 3.27) to D4 axles (LS 3.73) rocker panels are now gone! 145,000 miles

'90 Ranger S - 2.3L dual-plug I-4, M5OD, 2wd, 25 MPG, tan leather interior out of a 94 E.B, custom rear bumper, 235,000 miles and doesn't even leak oil!

Mechanical Engineering @ Northern Illinois University
yosh18981898 is offline   Reply With Quote
Old 08-15-2004, 11:20 PM   #7
yosh18981898
Chana IL
92 sport 4x4
 
Join Date: Oct 2003
Posts: 684

Vehicle Specs

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Original Poster)
Just tried replacing the ignition coil to no avail. I'm taking the stupid part back to Autozone tomorrow. I've checked and tested everything and I am kinda stumped. I'm leaving for college in about a week and a half so I need to get this problem resolved soon.




__________________
'92 Explorer Sport - M5OD, 2" lift, 31" A/T, PVC Intake, Flowmaster Exhaust, Custom bumpers on both ends, swapped from 41 (open 3.27) to D4 axles (LS 3.73) rocker panels are now gone! 145,000 miles

'90 Ranger S - 2.3L dual-plug I-4, M5OD, 2wd, 25 MPG, tan leather interior out of a 94 E.B, custom rear bumper, 235,000 miles and doesn't even leak oil!

Mechanical Engineering @ Northern Illinois University
yosh18981898 is offline   Reply With Quote
Old 08-16-2004, 11:00 PM   #8
yosh18981898
Chana IL
92 sport 4x4
 
Join Date: Oct 2003
Posts: 684

Vehicle Specs

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Original Poster)
Back to top,
Somebody please help me figure this out, it's driving me nuts!




__________________
'92 Explorer Sport - M5OD, 2" lift, 31" A/T, PVC Intake, Flowmaster Exhaust, Custom bumpers on both ends, swapped from 41 (open 3.27) to D4 axles (LS 3.73) rocker panels are now gone! 145,000 miles

'90 Ranger S - 2.3L dual-plug I-4, M5OD, 2wd, 25 MPG, tan leather interior out of a 94 E.B, custom rear bumper, 235,000 miles and doesn't even leak oil!

Mechanical Engineering @ Northern Illinois University
yosh18981898 is offline   Reply With Quote
Old 08-16-2004, 11:26 PM   #9
Blockay Sockay
Huntsville, AL
92' Sport
 
Join Date: Dec 2002
Posts: 30

Vehicle Specs

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Is it bucking while under load, or is it just hesitating? My explorer used to buck really bad when it was under load. I had just replaced the spark plugs so I didn't think that could possibly be the problem. I checked all of my sparks plugs just to be sure and the foward most cylinder on the driver's side spark plug was burnt up with carbon deposits in the spark gap. If it seems like you have a dead cylinder, check the plugs. It can't hurt to check the plugs if all else fails. Have you tried cleaning the injectors with a fuel injector cleaner you put in your gas?




__________________
Warrior Shackles & Coil Spacers, Flowmaster, K&N, 31" BFG A/T's---ROLL TIDE!!!
Blockay Sockay is offline   Reply With Quote
Old 08-18-2004, 07:08 PM   #10
yosh18981898
Chana IL
92 sport 4x4
 
Join Date: Oct 2003
Posts: 684

Vehicle Specs

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Original Poster)
I just ran seafoam through the engine, it runs a little better but the problem is still there. I think that its an electrical issue because it only does it from idle to about 2800 RPMs, once you get to 2800 it's like the engine completely opens up and throws you back in the seat. I was thinking that it could be the fuel pressure regulater. It can supposedly cause hesitation and stumbling, but won't (unlike almost all of the sensors) throw a code and cause the check engine light to come on. Any ideas would be appreciated




__________________
'92 Explorer Sport - M5OD, 2" lift, 31" A/T, PVC Intake, Flowmaster Exhaust, Custom bumpers on both ends, swapped from 41 (open 3.27) to D4 axles (LS 3.73) rocker panels are now gone! 145,000 miles

'90 Ranger S - 2.3L dual-plug I-4, M5OD, 2wd, 25 MPG, tan leather interior out of a 94 E.B, custom rear bumper, 235,000 miles and doesn't even leak oil!

Mechanical Engineering @ Northern Illinois University
yosh18981898 is offline   Reply With Quote
Old 08-18-2004, 09:26 PM   #11
cfkane
Denver, CO
93 XLT
 
Join Date: Jul 2004
Posts: 41

Vehicle Specs

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Check the bottom side of the air intake between the MAF and the Intake manifold, they have a tendency to wear through. Unless you have good evidence of a spark related problem do not discount air/fuel ratio as a cause. Due to the way the EEC is mapped the problem may be going away at higher rpm due to power enrichment. If you have a scan tool you may want to check O2 sensor response to see that it is in the mid range and also look for other signs of abnormal A/F ratio. High CO can be a spark related issue, low CO and erratic HC is generally lean burn misfire
cfkane is offline   Reply With Quote
Old 08-20-2004, 11:10 PM   #12
yosh18981898
Chana IL
92 sport 4x4
 
Join Date: Oct 2003
Posts: 684

Vehicle Specs

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Original Poster)
I fixed the problem. Believe it or not, it was the spark plugs, I pulled them out and they were all white and blistered. I find this hard to believe because they were autolite platinums and only had 20,000 miles on them. My guess is that while I was driving around with the intake hose lose, my MAF sensor reading was super low and causing the computer to run an incorrect air/fuel mixture, causing the plugs to get all messed up. I put new plugs in and now it runs better than ever.




__________________
'92 Explorer Sport - M5OD, 2" lift, 31" A/T, PVC Intake, Flowmaster Exhaust, Custom bumpers on both ends, swapped from 41 (open 3.27) to D4 axles (LS 3.73) rocker panels are now gone! 145,000 miles

'90 Ranger S - 2.3L dual-plug I-4, M5OD, 2wd, 25 MPG, tan leather interior out of a 94 E.B, custom rear bumper, 235,000 miles and doesn't even leak oil!

Mechanical Engineering @ Northern Illinois University
yosh18981898 is offline   Reply With Quote
Reply


Suggest this thread to friends:



Join the "Elite Explorers" Today!



Search Explorer Forum


Top of Page

Thread Tools

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

Forum Jump


All times are GMT -5. The time now is 12:10 AM.



US Flag
We Support Our Troops!

Explore the site!


Copyright 2014 - 1996 Rick Horwitz Photography



Ford Motor Company is not involved in the management of this site in any way.



All tips on this site are for use at your own risk and discretion.

Modifying the suspension on any vehicle will cause changes to its handling characteristics.



Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.