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 07-19-2007, 08:06 PM
redman007 redman007 is offline
New User
 
Join Date: Jun 2005
Posts: 15
redman007 is starting off with a positive reputation.
1995 f 150 won't start when hot

Working on a 1995 f 150 with a 302 that has fuel and spark and cranks fine but won't start when the engine is warm. Let it sit for 1 hour and it will start and run fine till you shut it off and it won't start again.It has good spark so it doesn't appear to be a coil or pick up but if I'm wrong please let me know. Acts like a vapor lock but I haven't seen this happen in years. Not after fuel injection.
If anyone has had this or anything that you would check that I haven't please let me know.

Thanks Rick
Reply With Quote
  #2  
Old 07-20-2007, 12:13 AM
pmipmatt73 pmipmatt73 is offline
Freshman User
 
Join Date: Nov 2006
Posts: 43
pmipmatt73 is starting off with a positive reputation.
my truck did the same thing. but it does start, but really hard to start... my trucks egr is stuck closed though. dunno if that effects it. pull koer codes from your truck see what it gives you.
Reply With Quote
  #3  
Old 07-20-2007, 10:15 AM
Mr. M's Avatar
Mr. M Mr. M is offline
Elder User
 
Join Date: Oct 2006
Location: Redmond, WA
Posts: 843
Mr. M is starting off with a positive reputation.
Quote:
Originally Posted by redman007
Working on a 1995 f 150 with a 302 that has fuel and spark and cranks fine but won't start when the engine is warm. Let it sit for 1 hour and it will start and run fine till you shut it off and it won't start again.It has good spark so it doesn't appear to be a coil or pick up but if I'm wrong please let me know. Acts like a vapor lock but I haven't seen this happen in years. Not after fuel injection.
If anyone has had this or anything that you would check that I haven't please let me know.

Thanks Rick
Sounds like your starter is afraid of heat!

Does this vehicle have aftermarket exhaust manifolds/headers? Big block chevys have this problem too. The radiant heat from the manifolds cooks the starter. Truck will not fire back up until the motor cools off.

Make sure your exhaust heat is avoiding your starter. You might consider installing some sort of heat shield around your starter and/or manifolds. Or find a more robust starter....

Hope this helps

Mike
__________________
94 F150 4x4 XLT-"Teal Mobile"-Fresh 306 9.5:1, built e7's 1.94in/1.60ex, custom cam, long tubes, OEM MAF, 4.10's, 4" lift, E4OD 225 rwhp - Dynojet- SAE
BMW E46 M3 -
"Track Rat"-TopasBlue on Cinnamon -3.2L 6spd,11.5:1 CR, JVT Headers/Borla Exhaust, RE pullies, ESS tune, 4.10's, GroundControl Coils, UUC Sways, Rotora 4 piston F&R BBK, 171 mph (closed track) 313 rwhp Dynojet-SAE- 12.88 107.4 mph
Reply With Quote
  #4  
Old 07-20-2007, 10:26 AM
redman007 redman007 is offline
New User
 
Join Date: Jun 2005
Posts: 15
redman007 is starting off with a positive reputation.
Starter isn't the problem. It cranks over fine. Has plenty of speed. I will check the EGR valve and see if it is stuck but it has no light on and runs fine when it's running so i'm not sure this is it but it is easy to check.

Rick
Reply With Quote
  #5  
Old 07-20-2007, 02:28 PM
rattosh51's Avatar
rattosh51 rattosh51 is offline
Senior User
 
Join Date: Apr 2007
Location: St. Paul, MN
Posts: 227
rattosh51 is starting off with a positive reputation.
Make sure your battery cables are ok all the way to the starter...heat can affect those too.
Reply With Quote
  #6  
Old 07-20-2007, 02:38 PM
Mr. M's Avatar
Mr. M Mr. M is offline
Elder User
 
Join Date: Oct 2006
Location: Redmond, WA
Posts: 843
Mr. M is starting off with a positive reputation.
Quote:
Originally Posted by redman007
Starter isn't the problem.
If your truck only starts when its cold, it could be. I've seen this before on my Fish and Wildlife chevy trucks.

Quote:
Originally Posted by redman007
It cranks over fine.
Yea, when the starter is cool. Again, don't discount the starter just because it works cold. I have a faint suspicion the heat associated with the truck warming up is the reason you can't fire it up warm.

Again...make sure your starter isn't cooking. Or the terminal from the battery to the starter is solid.
__________________
94 F150 4x4 XLT-"Teal Mobile"-Fresh 306 9.5:1, built e7's 1.94in/1.60ex, custom cam, long tubes, OEM MAF, 4.10's, 4" lift, E4OD 225 rwhp - Dynojet- SAE
BMW E46 M3 -
"Track Rat"-TopasBlue on Cinnamon -3.2L 6spd,11.5:1 CR, JVT Headers/Borla Exhaust, RE pullies, ESS tune, 4.10's, GroundControl Coils, UUC Sways, Rotora 4 piston F&R BBK, 171 mph (closed track) 313 rwhp Dynojet-SAE- 12.88 107.4 mph
Reply With Quote
  #7  
Old 07-20-2007, 03:56 PM
devja71 devja71 is offline
Senior User
 
Join Date: Feb 2007
Posts: 150
devja71 is starting off with a positive reputation.
think it's mabey in the fuel pump? i have a 94 taurus 3.0 and lately it quits on hot days, put in a gallon of gas from the jerry can and it starts right up. i've been told it's the diaphram in the fuel pump's getting weak, and the hot gasoline amplify's the problem, then the cool gas i put in cools it. anyone else heard of this? neighbor's 91 chev 1ton has a tbi 454 and he said it did the same thing before putting in a new pump. i dunno.
Reply With Quote
  #8  
Old 07-20-2007, 04:51 PM
bobcf's Avatar
bobcf bobcf is offline
Senior User
 
Join Date: Jun 2003
Location: western pa,zelienople
Posts: 435
bobcf is starting off with a positive reputation.
check the coolent temp sensour.
__________________
Bob
95 c150 351w
92 c150 351w
88 f250 460
Reply With Quote
  #9  
Old 07-21-2007, 12:47 PM
redman007 redman007 is offline
New User
 
Join Date: Jun 2005
Posts: 15
redman007 is starting off with a positive reputation.
Thanks for thr ideas.. The cables and the starter are ok, It cranks the same cold as it does hot... Adding fuel doesn't help either.(willing to try anything) Haven't got to the temp sending unit yet but thats next on the list. Anymore ideas please let me know and i will check them also.

Thanks Rick
Reply With Quote
  #10  
Old 07-21-2007, 03:11 PM
beforeiforget761 beforeiforget761 is offline
Senior User
 
Join Date: Jul 2007
Posts: 100
beforeiforget761 is starting off with a positive reputation.
I had this happen on one of my work trucks. Took it into the dealer to have it fixed under warranty, and they said it was the fuel pressure regulator.
But this was a 99 chevy truck. Don't know if a Ford would do the same
Reply With Quote
  #11  
Old 07-21-2007, 03:29 PM
radialarm's Avatar
radialarm radialarm is offline
Senior User
 
Join Date: Mar 2004
Location: Boyd,TX
Posts: 491
radialarm is starting off with a positive reputation.
Everyone else is throwing in their two cents, heres mine. I don't know where the coil is on a 302 but mine is next to the block. Could be a weak coil getting hot.
Reply With Quote
  #12  
Old 07-21-2007, 05:54 PM
netscaner netscaner is offline
Elder User
 
Join Date: May 2007
Location: Solon, Ohio
Posts: 754
netscaner is starting off with a positive reputation.
I second the weak coil theory as a good place to start when you have a heat up won't start and have good crank from the starter.

It DEFINATELY isn't caused by an EGR being stuck closed, the EGR is supposed to be closed when starting.
__________________
1994 F-150 2wd Ext Cab 5.0 EFI 4r70w Tran MAF 160k
Reply With Quote
  #13  
Old 07-21-2007, 06:13 PM
second chance second chance is offline
Junior User
 
Join Date: Mar 2007
Location: Glasgow,Ky.
Posts: 92
second chance is starting off with a positive reputation.
Have you ever pulled one of the plugs out when it throws this fit to see if it is wet with fuel or not? If you are sure you have good fire during this time then it almost has to be coming from the fuel system. A quick fuel pressure check during this could also be useful since on a fuel injection system can have fuel pressure and still not fire the injectors. The fuel pressure check will tell you if it is the pump or not also. I think one of the guys on here said once that it should carry 30# of pressure just turning on the key, not running. Not knowing exactly what the computer is looking at to start the engine that is about all I know of to look at right now. Does anyone know if there is a delay in the system looking for oil pressure? When the oil is hot it doesn't have as much oil pressure.
Reply With Quote
  #14  
Old 07-21-2007, 08:18 PM
GRAVEYARDSHIFT's Avatar
GRAVEYARDSHIFT GRAVEYARDSHIFT is offline
Junior User
 
Join Date: Jan 2007
Location: In a house ..or garage ?
Posts: 77
GRAVEYARDSHIFT is starting off with a positive reputation.
Hi, Next time it does, hit it with immedatly with starter fluid . If it starts its a fuel issue.if it dont, its spark related .Then I would have the module tested .Pat
__________________
1996 f150 5.0 pasesetter headers & magnaflow muffler w/duals.
1990 Mustang LX convertible
1950 Ford Custom Flathead 8 w/duals and cherry bombs
1958 Chevy Biscayne 283 4bbl
1983 Camaro Berlinetta T tops 305 4bbl
1952 ****** Truck Basketcase Soon to be a Rat rod !

Last edited by GRAVEYARDSHIFT; 07-21-2007 at 08:26 PM.
Reply With Quote
Old 07-21-2007, 08:18 PM
 
 
 
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
CRAZY TRUCKS!!! Got something wild and amazing? (entry thread) Greywolf Picture competitions 53 04-01-2011 04:15 AM
AT WITS END!! MIGHT HAVE TO SHOOT THE BUGGER!! Smokiesman 1999 - 2003 7.3L Power Stroke Diesel 38 08-18-2010 11:55 PM
1973 F100 240/3sp. prospect...need info! Bowtie_Schmowtie 1973 - 1979 F-100 & Larger F-Series Trucks 12 06-08-2009 04:42 PM
89 F-250 4x4 won't go into Drive lagunafordf250 1987 - 1996 F150 & Larger F-Series Trucks 8 08-06-2008 05:55 PM
87 F150 w/ dual tanks wont start - suspected selector valve? need help ASAP guitar333 1987 - 1996 F150 & Larger F-Series Trucks 17 08-27-2004 03:46 PM


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

Tags
1990, 1995, 96, day, engine, escape, f150, ford, heat, hot, lock, quits, start, taurus, vapor, warm, warms, wont

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 07:05 AM.


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