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 08-05-2010, 05:16 PM
pataloc pataloc is offline
New User
 
Join Date: Aug 2010
Posts: 1
pataloc is starting off with a positive reputation.
1988 Ford F-250 v8 7.5L Lose of Power over 2000 RPM

First thanks to anyone that helps me, I dont know how it is here, but I know on a couple forums people dont really like helping people that havent contributed to the forum, but anyway just know your helping a poor man with a broke truck that just wants to go fishing already lol.

I have a 1988 ford f-250, well she starts, idles, and drives fine for about 5 minutes when started, then if the RPMS are brought above 2000 RPM the car will not gain much power and a noise similar to a plastic bag stuck under the car blowing in the wind is heard from under the car. But this problem and noise only occurs above the 2000 RPM.

The car will drive alright if kept under 2000-2200 RPM seemingly with no problems, after it is brought up above 2200 the problem will occur as low as 1500 RPM, when this occurs, turning off the car and restarting causes it to again NOT occur intill the rpm's are above 2000 again.

In park or neautral, the car can be revd above 3K no problems. I have replaced both the fuel pressure regulator and fuel filter.

I dont think its exaugshst cuz i can rev over 2000 in park, I dont think its the TFI module cuz the car idles well warm or cold, I also did a fuel volume test, and it pumped MORE than it should, I havent got a pressure test yet.

When I replaced the fuel filter, it ran perfect for 20 minutes with no problems, and when I replaced the fuel pressure regulator, it drove for 45 minutes over 70MPH and then I parked for 3 hours, dorve 15 more moinutes and then same damn problem.
Reply With Quote
  #2  
Old 08-05-2010, 08:15 PM
Conanski's Avatar
Conanski Conanski is offline
Post Fiend
 
Join Date: Jun 2006
Location: Ottawa, Ontario
Posts: 20,411
Conanski has much to be proud ofConanski has much to be proud ofConanski has much to be proud ofConanski has much to be proud ofConanski has much to be proud ofConanski has much to be proud ofConanski has much to be proud ofConanski has much to be proud ofConanski has much to be proud of
I say you have a busted cat converter.
__________________
Paul (Conan) O'Brien

1990 5.0HO AOD XLT X-Cab F150 3.55LS, 1994 3.0L 5-sp x-cab Ranger 3.45, 2004 3.0L 5-sp X-cab Ranger Edge 4.10, 2004 2.5L 5-spd Subaru Legacy
1996 Kawasaki ZX11D, 2004 Honda 599, 2008 Kawasaki KLR650
Reply With Quote
  #3  
Old 04-06-2014, 12:36 PM
hdboy1966 hdboy1966 is offline
New User
 
Join Date: Apr 2014
Posts: 1
hdboy1966 is starting off with a positive reputation.
lose of power

i hate to say this but ran into that years ago with a different car sounds like there might be something in your fuel tank and when it needs more fuel it plugs the fuel pickup in your tank thats why it only does it while driving and over 2000 rpm.hope that helps.
Reply With Quote
  #4  
Old 04-06-2014, 12:54 PM
blkF250HD's Avatar
blkF250HD blkF250HD is offline
Posting Guru
 
Join Date: Apr 2011
Location: Hartland, WI
Posts: 1,119
blkF250HD is gaining momentum as a positive member of FTE.blkF250HD is gaining momentum as a positive member of FTE.
Quote:
Originally Posted by Conanski View Post
I say you have a busted cat converter.
Agreed. The convertor is either broken up internally or clogged. No load there isn't much air flowing through the engine, once you place a load on it the restriction becomes more apparent. I've seen them get progressively worse as the cat heats up as well.
__________________
'97 F250HD 4x4 351W E4OD
'91 Mazda 323 BG
'98 Harley-Davidson XL1200C 95th anniversary
'09 WRX premium
'04 Polaris 500 Classic
Reply With Quote
Old 04-06-2014, 12:54 PM
 
 
 
Reply

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

Tags
1988, 1990, 1994, 2000, 70, 75l, f250, f350, ford, looses, mph, power, rpm, v8, 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

Similar Threads
Thread Thread Starter Forum Replies Last Post
PLS HELP! 1988 E250 van loses power after 30 min -- 2000mi from home seb_toronto 1968-2013 Full Size Vans 21 09-19-2014 07:01 PM
1992 F150 302 efi missing, running rough after engine warm smilingole 1987 - 1996 F150 & Larger F-Series Trucks 4 01-08-2013 12:06 PM
low to no power under 2200rpm hedhntr 1994.5 - 1997 7.3L Power Stroke Diesel 9 08-03-2012 10:56 PM
Poorly running 97 7.3 PSD Wes Hawkins 1994.5 - 1997 7.3L Power Stroke Diesel 34 03-26-2012 12:37 PM
390 "popping" through exhaust during acceleration, engine stumbles, lack of power.... montana_highboy FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428) 7 06-02-2008 08:16 AM



All times are GMT -5. The time now is 05:23 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