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  
Old 05-08-2006, 10:08 PM
mikemustang289 mikemustang289 is offline
Freshman User
 
Join Date: May 2006
Posts: 26
mikemustang289 is starting off with a positive reputation.
1996 F150 starting problems

My 1996 f150 has a problem starting, and it doesn't matter if the engine is warmed up or not.

It will crank and then it will begin to run real rough at 500 rpm and hitting the accelerator doesn't afftect anything, sometime it will die and I'll have to try again.

After a few seconds of running like crap the rpm's will rise and it will idle normally.

The other night the engine started to run like crap on my way home from work. It felt like a couple of cylinders were not firing and it had no acceleration, the rpms were bouncing around so at least one cylinder was not firing. I pulled to the side of the road, shut it down and started back up and it ran fine the rest of the way home.

I'm stumped, I've changed the fuel filter and MAF sensor, the plugs and wires are new. By the way this is a 4.9 6cyl with a 5 speed.
Reply With Quote
  #2  
Old 05-08-2006, 11:28 PM
andym's Avatar
andym andym is offline
Post Fiend
 
Join Date: Mar 2002
Location: Sacramento, CA
Posts: 16,396
andym has a superb reputationandym has a superb reputationandym has a superb reputationandym has a superb reputationandym has a superb reputationandym has a superb reputationandym has a superb reputationandym has a superb reputationandym has a superb reputationandym has a superb reputationandym has a superb reputation
Sounds like the TPS to me. If you have a code reader, you can pull your codes. Or Autozone can do it for free.
__________________
Andy

"If you want to live in a country that manufactures things, you need to buy things that your country manufactures." - Mike Rowe
Reply With Quote
  #3  
Old 05-09-2006, 06:26 AM
ntan ntan is offline
New User
 
Join Date: Dec 2005
Posts: 24
ntan is starting off with a positive reputation.
Is you check engine light on? Also check your vac. hoses going towards your IAC valve. These hoses gets dry rotted or if gets real soft and pinches close your truck will run rough. If it has a hole in Your IAC hose your truck won't idle but will run at high rpm only. IAC(Idle air control)
Reply With Quote
  #4  
Old 05-09-2006, 02:49 PM
tomandbeth tomandbeth is offline
Senior User
 
Join Date: Feb 2005
Posts: 170
tomandbeth is starting off with a positive reputation.
Fuel filter maybe?
Reply With Quote
  #5  
Old 05-10-2006, 08:16 PM
mikemustang289 mikemustang289 is offline
Freshman User
 
Join Date: May 2006
Posts: 26
mikemustang289 is starting off with a positive reputation.
I changed the fuel filter and it didn't do anything. The check engine light is on so something must be wrong. It idles fine, just not right at start up. it will crank and it sits there and runs real rough at 500 rpm for a few seconds and either dies or jumps up to 1000 rpm and begines to idle fine. It almost seems like for the first few seconds it's not running on all cylinders.
Reply With Quote
  #6  
Old 05-10-2006, 08:26 PM
Rob789 Rob789 is offline
New User
 
Join Date: Apr 2006
Posts: 5
Rob789 is starting off with a positive reputation.
Similiar Problem

I am having a very similiar problem on my 90' F-150, and my code is reading that the tps is bad, I am planning on replacing it within the next week or so, so ill let you know if it does anything for me.
Reply With Quote
  #7  
Old 05-10-2006, 10:59 PM
mikemustang289 mikemustang289 is offline
Freshman User
 
Join Date: May 2006
Posts: 26
mikemustang289 is starting off with a positive reputation.
How much does a TPS cost? I might as well just change even if it's not the cause of the problem, it's probably the original one anyway.
Reply With Quote
  #8  
Old 05-11-2006, 07:44 AM
alz alz is offline
Posting Guru
 
Join Date: Nov 2004
Location: Michigan
Posts: 1,308
alz is starting off with a positive reputation.
How about fuel pump on its way out? Do you have dual tanks? Try switching front to rear.
Reply With Quote
  #9  
Old 05-11-2006, 08:40 AM
powerfordf1504x4 powerfordf1504x4 is offline
Freshman User
 
Join Date: Mar 2006
Location: St. Merdinard, Indiana
Posts: 33
powerfordf1504x4 is starting off with a positive reputation.
tps somewhere around 50 to 100 bucks for 95 5.0
4.9 should be around there somewhere

Try distributor cap and rotor maybe. Tps or fuel pumps
Tps Around 50 to 100 bucks
Fuel pump from napa is 234 bucks plus tax
Cap and rotor 30 bucks
__________________
Kickin Tires, Light Fires
Reply With Quote
  #10  
Old 05-11-2006, 03:30 PM
mikemustang289 mikemustang289 is offline
Freshman User
 
Join Date: May 2006
Posts: 26
mikemustang289 is starting off with a positive reputation.
The TPS has been changed and that did nothing. Last night on my way home I was driving on the highway and all of a sudden the truck just lost power and began to barely run. I shut it down and restarted it about 20 times and nothing changed. I had to rev it up and slip the clutch to make it all the way off the exit ramp and toward the bottom, the truck just began to run normal again and I took off and made it home.


The codes coming back are reffereing to a Lean Bank 1. whatever that means.

While the truck was running like crap I switched tanks and it did not do anything. Do these trucks have one pump for both tanks? how does that work?
Reply With Quote
  #11  
Old 05-12-2006, 11:44 AM
EFI-79 EFI-79 is offline
Freshman User
 
Join Date: Mar 2003
Posts: 25
EFI-79 is starting off with a positive reputation.
Mikemustang,

I am having the same problem with my 1991 f350.

Mine will also crank and then it will begin to run real rough at 500 rpm, But I can give it gas to bring the idle up. When I do this it runs rough for 10 to 15 seconds then usually smooths out. Mine will also sometime die and I'll have to try again. It is acting like it is flooded. Sometimes I will have to floor it to start it.

This weekend I am going to attempt to resolve the issue. I am leaning toward the TPS and the fuel pressure regulator. I will let you know the outcome.
__________________
Braidy K Kirkman
Reply With Quote
  #12  
Old 05-14-2006, 01:48 PM
inspector99 inspector99 is offline
Junior User
 
Join Date: May 2006
Posts: 65
inspector99 is starting off with a positive reputation.
im having similar problems with mine,96 300,5 spd,hope you figure it out,im lost
Reply With Quote
  #13  
Old 05-14-2006, 07:11 PM
inspector99 inspector99 is offline
Junior User
 
Join Date: May 2006
Posts: 65
inspector99 is starting off with a positive reputation.
i unpluged the tps,seems to work fine now except for high idle when shifting gears,gonna pick up a new tps this week and see if that works
Reply With Quote
  #14  
Old 05-16-2006, 10:19 AM
EFI-79 EFI-79 is offline
Freshman User
 
Join Date: Mar 2003
Posts: 25
EFI-79 is starting off with a positive reputation.
Well, I worked on my truck this weekend and it works great now. I changed the fuel pressure regulator. It was about $30 and took about a half an hour to change. Hope this will work for you guys as well.
__________________
Braidy K Kirkman
Reply With Quote
Old 05-16-2006, 10:19 AM
 
 
 
Reply

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

Tags
1996, 49, 96, cranks, f150, ford, problem, problems, start, starter, starting, troubleshooting

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 11:32 PM.


Powered by vBulletin® Version 3.8.7 AC1
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