Go Back   Ford Truck Enthusiasts Forums > Older, Classic & Antique Trucks > 1987 - 1996 F150 & Larger F-Series Trucks
Sign in using an external account
Register Forgot Password?


1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Welcome to Ford-Trucks Forums!
Welcome to Ford-Trucks.com.

You are currently viewing our forums as a guest, which gives you limited access to view most discussions and access our other features. By joining our community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join the Ford-Trucks Forums community today!





 
Reply
 
LinkBack Thread Tools Search this Thread
  #1 (permalink)  
Old 12-04-2000, 08:47 PM
shortk shortk is offline
New User
 
Join Date: Nov 2000
Posts: 24
shortk is starting off with a positive reputation.
460 Ignition Problem

My 1987 Class C motorhome on an E-350 chassis with a 460 has developed a problem I cannot identify, but it seems like a timing problem to me. I usually set the cruise control at about 65mph and it runs along quite well, but the last trip I would occasionally get a small backfire, that I could hear, but not feel, just a little "pop". Also, once when passing a line of semi trucks, I kicked it up to about 72mph to get around them and all of a sudden it just starting slowing down. The motor sounded smooth, just no power. I was about to jump in my Ranger I was towing and PUSH the motorhome! It dropped down to about 55, and I fell in behind the truck to let other traffic pass, and it would then accelerate and I passed the truck at about 75 or better after that. Power on the hills has dropped too, but it seems ok sometimes. I first thought it was a fuel problem, but I changed the filter and checked flow out of the fuel line and it looks good. The timing at an idle is fine, the mechanical advance seems to be working, but doesn't the Dura-spark module control timing too? Of all the Fords I've owned, the only problem I've had with a Dura-spark was no spark at all not an intermittant problem like this.
Any help would be appreciated.
Ken
90 Ranger 4X4
91 Explorer 4X4
94 F-150 4X4
87 Ford Moho (ailing)
Reply With Quote
  #2 (permalink)  
Old 12-05-2000, 10:34 PM
jakegypsum's Avatar
jakegypsum jakegypsum is offline
Posting Guru
 
Join Date: Sep 2000
Location: Linwood, N.J. USA!
Posts: 1,586
jakegypsum is starting off with a positive reputation.
460 Ignition Problem

Ken, have you tuned the engine up lately? It could possibly be a cracked ignition wire or boot right where the wires go to the plugs. The heat from the exhaust manifold could have dried the wires out. Also check coil. Make sure that there are no cracks in it and that it is sending a blue spark to the plugs. I have had similar problems with wires on my 92' f-250 (351 engine). I have seen the coil act up like this on all of my f-700's at one point or another. 84', 86' 87' & 89'.370 engine. Also check wiring to distributer for chaffing on engine block. Good luck.... Jakegypsum // Ford fleet, soup to nuts.
When the wind is right, you can hear those Chevy's rust..........just listen.
__________________
Jakegypsum // Ford fleet, soup to nuts.
http://www.ford-trucks.com/user_gall...?&photoid=4194
Reply With Quote
  #3 (permalink)  
Old 12-21-2000, 05:45 PM
homeonwheels homeonwheels is offline
New User
 
Join Date: Dec 2000
Posts: 2
homeonwheels is starting off with a positive reputation.
460 Ignition Problem

I had a vacuum leak going to my vacuum advanced that caused a very simular problem....Ran great...would back fire...lost power and slows down. I would take my foot off the gas and then would run fine for a while.
Reply With Quote
  #4 (permalink)  
Old 12-21-2000, 07:16 PM
Phillip Guidry Phillip Guidry is offline
Posting Guru
 
Join Date: Jun 1999
Posts: 1,525
Phillip Guidry is starting off with a positive reputation.
460 Ignition Problem

Just A note on fuel filters for the 460 cab & chassis models, some models had 2 fuel filters per vehicle. One was the 3 line filter between the fuel pump and carb, and, some had a canister filter between the tank and fuel pump....check very closely for the "extra" filter. Also, the vacuum line tip is a good one....seen that one many times as well.
Phil
__________________
Phillip Guidry
Southern,LA
98 F150 2wd 3dr 4.6l Auto 80k
88 F150 2wd LWB 4.9l 4-spd Granny 195k (sold
98 FXDL
83 VT750C
08 Fusion V-6
Reply With Quote
  #5 (permalink)  
Old 12-22-2000, 05:13 PM
deleontow deleontow is offline
Elder User
 
Join Date: Jun 1999
Location: San Jacinto CA
Posts: 891
deleontow is starting off with a positive reputation.
460 Ignition Problem

I would check your fuel presure with a guage, you may have a fuel pump which can not keep up with the flow at higher rmps.

Dave

http://a2ztowing.homestead.com/a2ztowing.html
Reply With Quote
  #6 (permalink)  
Old 12-28-2000, 03:09 AM
xaviar's Avatar
xaviar xaviar is offline
Senior User
 
Join Date: Dec 2000
Posts: 380
xaviar is starting off with a positive reputation.
460 Ignition Problem

Yes Philip, you're right. Ford quit using that canister filter around 1992 or so because of the problems it was causing. No one knew about it to change it. I was told by a Ford dealer to remove the canister filter and just run the inline filter.

Xaviar
__________________
Xaviar
2006 F350 CC, LWB, SRW. Powerstroke 6.0L. Auto, 93,755 miles. ARP's Studded 06/15/2013, SCT Tuner by KEM Performance with custom tunes, 4 inch exhaust from turbo back, gauges. Xtreme diesel coolant filter. Final Charge ELC 1 CAT certified anti-freeze. Blue spring kit upgrade. AFE Proguard 7 stage 2 filter kit.
Reply With Quote
  #7 (permalink)  
Old 12-31-2000, 09:02 PM
xaviar's Avatar
xaviar xaviar is offline
Senior User
 
Join Date: Dec 2000
Posts: 380
xaviar is starting off with a positive reputation.
460 Ignition Problem

[font size="1" color="#FF0000"]LAST EDITED ON 31-Dec-00 AT 10:03 PM (EST)[/font][p]Hi Ken

Can you tell me if your truck is EFI or Carb? If it is EFI, do you have a MAP sensor or MAF sensor? I've been looking for a conversion kit for my truck to MAF. 96 F-250 460/E4OD. I've been told that a few Motorhome Chassis had MAF up till 1994 or so.

Have you ever heard of a MAF conversion kit for the 460?

thx
Xaviar
__________________
Xaviar
2006 F350 CC, LWB, SRW. Powerstroke 6.0L. Auto, 93,755 miles. ARP's Studded 06/15/2013, SCT Tuner by KEM Performance with custom tunes, 4 inch exhaust from turbo back, gauges. Xtreme diesel coolant filter. Final Charge ELC 1 CAT certified anti-freeze. Blue spring kit upgrade. AFE Proguard 7 stage 2 filter kit.
Reply With Quote
  #8 (permalink)  
Old 01-06-2001, 07:35 AM
shami02 shami02 is offline
Senior User
 
Join Date: Jul 2000
Posts: 136
shami02 is starting off with a positive reputation.
460 Ignition Problem

You go Xavier, Keep looking for that MAF for our trucks... BTW you didn't answer my last post... Would you email me with the current results of you search I also have a few items to share...

Mike
1995 F-350 460 E4OD
Reply With Quote
  #9 (permalink)  
Old 01-06-2001, 12:02 PM
xaviar's Avatar
xaviar xaviar is offline
Senior User
 
Join Date: Dec 2000
Posts: 380
xaviar is starting off with a positive reputation.
460 Ignition Problem

>You go Xavier, Keep looking
>for that MAF for our
>trucks...
I will not stop till it's found.......lol

BTW you didn't answer
>my last post... Would you
>email me with the current
>results of you search I
>also have a few items
>to share...
Just e'd ya this morning.

>
>Mike
>1995 F-350 460 E4OD



__________________
Xaviar
2006 F350 CC, LWB, SRW. Powerstroke 6.0L. Auto, 93,755 miles. ARP's Studded 06/15/2013, SCT Tuner by KEM Performance with custom tunes, 4 inch exhaust from turbo back, gauges. Xtreme diesel coolant filter. Final Charge ELC 1 CAT certified anti-freeze. Blue spring kit upgrade. AFE Proguard 7 stage 2 filter kit.
Reply With Quote
  #10 (permalink)  
Old 01-07-2001, 01:30 AM
Thudpucker's Avatar
Thudpucker Thudpucker is offline
Posting Guru
 
Join Date: Jan 2000
Location: Cullman Alabama
Posts: 1,858
Thudpucker is gaining momentum as a positive member of FTE.
460 Ignition Problem

__________________
97 F-150/4X4/ex cab/4.6V-8/auto/Lariat,F/Glass canopy and a 77 F-150/460/C-6/ex-cab/Fglass Canopy.
Reply With Quote
Old 01-07-2001, 01:30 AM
Reply

Go Back   Ford Truck Enthusiasts Forums > Older, Classic & Antique Trucks > 1987 - 1996 F150 & Larger F-Series Trucks

Tags
1979, 1995, 1996, 460, 95, bogs, f350, ford, ignition, issues, pack, peoblems, problem, problems, starting

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 On
Trackbacks are On
Pingbacks are On
Refbacks are On
Forum Jump



All times are GMT -5. The time now is 12:42 AM.


Powered by vBulletin® Version 3.7.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Advertising - Terms of Use - Privacy Statement - Jobs
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. FordŽ is a registered trademark of the Ford Motor Company.

vbulletin Admin Backup