94 f-250 460 No spark issue - Page 2 - Ford Truck Enthusiasts Forums



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

94 f-250 460 No spark issue

Reply
 
 
 
LinkBack Thread Tools Search this Thread
  #16  
Old 10-03-2011, 03:57 PM
lisagoud lisagoud is offline
Posting Guru
 
Join Date: Nov 2003
Posts: 1,356
lisagoud is starting off with a positive reputation.
I've got a 1992 with it still on the distrubutor with a 7.5 stroker:





Can't we all just get along?
Reply With Quote
  #17  
Old 10-03-2011, 04:13 PM
subford's Avatar
subford subford is offline
Post Fiend
 
Join Date: Aug 2005
Location: Easton,Ks
Posts: 19,797
subford has much to be proud ofsubford has much to be proud ofsubford has much to be proud ofsubford has much to be proud ofsubford has much to be proud ofsubford has much to be proud ofsubford has much to be proud ofsubford has much to be proud ofsubford has much to be proud ofsubford has much to be proud of
No 1992 F-series truck with any size engine should have it on the distributor.
At least Ford did not put it there, at least that is what all the Ford EVTM say.
Reply With Quote
  #18  
Old 10-03-2011, 04:20 PM
lisagoud lisagoud is offline
Posting Guru
 
Join Date: Nov 2003
Posts: 1,356
lisagoud is starting off with a positive reputation.
looks like a TFI on a distributor to me...glad they finally moved it to the fender wall because it is a lousy idea on the distributor. With Ford, I've learned to believe my eyes rather than the book (Book is a great guide but it's about as accuarate as the BIble) (Just my opionion,we welcome yours)!
Reply With Quote
  #19  
Old 10-03-2011, 04:29 PM
subford's Avatar
subford subford is offline
Post Fiend
 
Join Date: Aug 2005
Location: Easton,Ks
Posts: 19,797
subford has much to be proud ofsubford has much to be proud ofsubford has much to be proud ofsubford has much to be proud ofsubford has much to be proud ofsubford has much to be proud ofsubford has much to be proud ofsubford has much to be proud ofsubford has much to be proud ofsubford has much to be proud of
That photo is of a 1988 or older engine if it is a 460.
I just check the 1990 manuals and they also put it on the drivers fender so there is no way a 1992 has it on the distributor.
Reply With Quote
  #20  
Old 10-03-2011, 04:59 PM
lisagoud lisagoud is offline
Posting Guru
 
Join Date: Nov 2003
Posts: 1,356
lisagoud is starting off with a positive reputation.
Nope, 1992 F350 7.5 4wd regular cab XLTwith 1/92 manufactire date (Canada Ford though)!(Believe your eyes not the book!) You don't give up or learn too easy do you?

I rebuilt this about 2 years ago and it does have the F3te HEADS (i KNOW IT'S A 1992 BUT STILL HAD THEM WHEN i GOT THE TRUCK 10 YEARS AGO)> Ford does strange things and this is just one more example/ I also hasve a 1990 F450 Canadian that has the earlier type fuel system on it (2 lows in tanlks and one high pressure on the rail) on a 7.5 2wd plain cab.
Reply With Quote
  #21  
Old 10-03-2011, 05:54 PM
subford's Avatar
subford subford is offline
Post Fiend
 
Join Date: Aug 2005
Location: Easton,Ks
Posts: 19,797
subford has much to be proud ofsubford has much to be proud ofsubford has much to be proud ofsubford has much to be proud ofsubford has much to be proud ofsubford has much to be proud ofsubford has much to be proud ofsubford has much to be proud ofsubford has much to be proud ofsubford has much to be proud of
lisagoud,
You have a 89 or earlier truck. 1989 was the last F-series truck that had that fuel system.
You have put together truck by somebody.
Please quit putting out bad information as some new members may believe you.

If you have any questions about this era truck I would be glad to answer them if you would start your own Thread.

Other than that I will not respond anymore in this Thread except to the OP if he has anymore questions. We need to stay on the subject.
Reply With Quote
  #22  
Old 10-11-2011, 12:40 PM
ole Hooker ole Hooker is offline
New User
Thread Starter
 
Join Date: Oct 2011
Posts: 7
ole Hooker is starting off with a positive reputation.
Sorry to ruin the fun guys... buuuutttttt...
can not get PCM to clear firewall!

Ant tricks?
Reply With Quote
  #23  
Old 10-11-2011, 01:20 PM
ole Hooker ole Hooker is offline
New User
Thread Starter
 
Join Date: Oct 2011
Posts: 7
ole Hooker is starting off with a positive reputation.
Fender is not an issue... can not get the tail end to clear the firewall. Seems there is something still holding on in the back of it. Can't see anything just feel it something stopping it.
Reply With Quote
  #24  
Old 10-11-2011, 04:16 PM
ole Hooker ole Hooker is offline
New User
Thread Starter
 
Join Date: Oct 2011
Posts: 7
ole Hooker is starting off with a positive reputation.
got it out.... I think there was a chip on the back....
Reply With Quote
  #25  
Old 05-06-2013, 12:52 PM
Texasboy77351 Texasboy77351 is offline
New User
 
Join Date: May 2013
Posts: 3
Texasboy77351 is starting off with a positive reputation.
Did the pcm fix your truck? I have a 97 7.5 that's doing the same as yours just curious before I spend 200 on a PCM
Reply With Quote
  #26  
Old 11-08-2016, 09:14 PM
TyBoo TyBoo is offline
New User
 
Join Date: Nov 2016
Posts: 1
TyBoo is starting off with a positive reputation.
Hi there. I know this is an old thread but I just wanted to bring it back up to thank you all for the spot-on advice. Thanks especially to subford for sharing the simple testing procedure. I followed the steps and found the problem.

The PCM in my 1994 F20 460 was fried. It had gotten wet as evidence by the rust on the can and any doubts I had as to its state were gone as soon as I pulled it out and smelled the thing. There is no doubt it got warm.

I could not find a new or reman PCM available at any of the local stores and the only option they offered was sending my unit in and waiting for it to be rebuilt and returned. I discovered that the PCM in the 1994-95 models is unique to those years and they are, as stated earlier in this thread, hard to find. I checked the local junkyard and they had a unit out of a 1996 model. Their research suggested it might work so they sent me home with it to try. I plugged it in and the old Ford fired right up.

There seems to be some difference with the replacement unit. I noticed it takes longer to start than before, requiring a good ten seconds of cranking before it fires. And I swear that the low end power and torque is increased. The replacement PCM has a black plastic box attached to the back of the can (sorry, I didn't think to get a picture) where the large square knock out plug is on the old unit.

At any rate, it runs fine and the battery is good so the extra few seconds of cranking is no problem.

Thank you all again for the help. I Googled my truck model, year, and the problem and this thread was the first hit.
Reply With Quote
  #27  
Old 11-08-2016, 11:00 PM
Lead Head Lead Head is offline
Post Fiend
 
Join Date: Jul 2007
Location: Rhode Island
Posts: 7,010
Lead Head is a name known to allLead Head is a name known to allLead Head is a name known to allLead Head is a name known to allLead Head is a name known to allLead Head is a name known to all
Quote:
Originally Posted by TyBoo View Post
There seems to be some difference with the replacement unit. I noticed it takes longer to start than before, requiring a good ten seconds of cranking before it fires.
That is not normal.
Quote:
The replacement PCM has a black plastic box attached to the back of the can (sorry, I didn't think to get a picture) where the large square knock out plug is on the old unit.
That's some kind of tuning chip. I recommend unplugging it - it may be causing your long crank issue.
Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
1980 f100 EFI swap troubles Larry Heath Wheeler 1987 - 1996 F150 & Larger F-Series Trucks 16 10-15-2015 11:06 AM
Bad PCM? RIKIL 1987 - 1996 F150 & Larger F-Series Trucks 9 02-25-2013 01:31 PM
Need help with 1995 Ranger no fuel no spark Mastagunz Ranger & B-Series 3 08-25-2011 10:19 PM
Ignition problems, no spark mox-ct 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks 37 08-17-2010 05:15 PM
92 F-150 302 No Fuel Pressure No spark MudBugn 1987 - 1996 F150 & Larger F-Series Trucks 6 04-14-2009 02:37 PM


Go Back   Ford Truck Enthusiasts Forums >

Tags
1997, 460, 4x4, 94, big, block, engine, explorer, f250, ford, ga, pcm, plug, spark, unplugging

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

Forum Jump


All times are GMT -5. The time now is 04:02 PM.


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.