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 02-01-2011, 04:55 PM
Cage Fighter Cage Fighter is offline
New User
 
Join Date: Feb 2011
Posts: 3
Cage Fighter is starting off with a positive reputation.
TPS Code 53

I have a 1989 F-250, 351W with C6 trans. The vehicle was parked for two years with idle problems. I checked the codes and had EGR and TPS codes. Replaced the EVR, EVP and EGR valve along with hoses. Replaced the TPS, cleaned the IAC and replaced IAC and TB gaskets. Still have code 53. Checked the TPS resistance at TP SIG and SIG RTN with 5680 ohms at idle and 728 ohms WOT. Back probed the TPS connector and had 5.03 volts at idle and WOT. Vehicle starts with high idle that steps down and then stalls. If I hold the throttle briefly it will idle and run fine. CEL is on during this time. On occasion, at around twelve miles of constant driving the idle will "change" and the CEL will turn off. Any help would be greatly appreciated.
Reply With Quote
  #2  
Old 02-02-2011, 02:05 PM
rla2005's Avatar
rla2005 rla2005 is offline
Post Fiend
 
Join Date: Oct 2005
Location: Illinois
Posts: 7,904
rla2005 is a splendid one to beholdrla2005 is a splendid one to beholdrla2005 is a splendid one to beholdrla2005 is a splendid one to beholdrla2005 is a splendid one to beholdrla2005 is a splendid one to beholdrla2005 is a splendid one to behold
Sounds more like you measured the VREF signal instead of the TPS signal back to the PCM. I always use voltage values when measuring a TPS.
__________________
2013 Ford Taurus Limited 3.5L
2006 Ford Mustang GT 5-speed 3v 4.6L
rla2005@yahoo.com
Randy A | Central Illinois
Reply With Quote
  #3  
Old 02-02-2011, 03:57 PM
TexasGuy001 TexasGuy001 is offline
Post Fiend
 
Join Date: Sep 2001
Posts: 9,381
TexasGuy001 has a very good reputation on FTE.TexasGuy001 has a very good reputation on FTE.TexasGuy001 has a very good reputation on FTE.TexasGuy001 has a very good reputation on FTE.
Since there is already a new thread on Throttle Position Sensors, I thought I'd add to it. When replacing the TPS are you supposed to put dielectic grease on it before installing?
__________________
2002 Ford Ranger Extended Cab Flareside 3.0 V6 Automatic 3.73
1965 Mustang 302 T5
Fix It Up Don't %$@# It Up
Reply With Quote
  #4  
Old 02-02-2011, 04:06 PM
rla2005's Avatar
rla2005 rla2005 is offline
Post Fiend
 
Join Date: Oct 2005
Location: Illinois
Posts: 7,904
rla2005 is a splendid one to beholdrla2005 is a splendid one to beholdrla2005 is a splendid one to beholdrla2005 is a splendid one to beholdrla2005 is a splendid one to beholdrla2005 is a splendid one to beholdrla2005 is a splendid one to behold
I do put some on the connector to help keep moisture out.
__________________
2013 Ford Taurus Limited 3.5L
2006 Ford Mustang GT 5-speed 3v 4.6L
rla2005@yahoo.com
Randy A | Central Illinois
Reply With Quote
  #5  
Old 02-02-2011, 04:33 PM
TexasGuy001 TexasGuy001 is offline
Post Fiend
 
Join Date: Sep 2001
Posts: 9,381
TexasGuy001 has a very good reputation on FTE.TexasGuy001 has a very good reputation on FTE.TexasGuy001 has a very good reputation on FTE.TexasGuy001 has a very good reputation on FTE.
The old one had some on the part the mounts on the throttle body.
__________________
2002 Ford Ranger Extended Cab Flareside 3.0 V6 Automatic 3.73
1965 Mustang 302 T5
Fix It Up Don't %$@# It Up
Reply With Quote
  #6  
Old 02-02-2011, 04:34 PM
TexasGuy001 TexasGuy001 is offline
Post Fiend
 
Join Date: Sep 2001
Posts: 9,381
TexasGuy001 has a very good reputation on FTE.TexasGuy001 has a very good reputation on FTE.TexasGuy001 has a very good reputation on FTE.TexasGuy001 has a very good reputation on FTE.
Hey Cage Fighter, This may help you some.

YouTube - Testing a Ford 5.0L throttle position sensor
__________________
2002 Ford Ranger Extended Cab Flareside 3.0 V6 Automatic 3.73
1965 Mustang 302 T5
Fix It Up Don't %$@# It Up
Reply With Quote
  #7  
Old 02-04-2011, 12:37 AM
Cage Fighter Cage Fighter is offline
New User
 
Join Date: Feb 2011
Posts: 3
Cage Fighter is starting off with a positive reputation.
Texas Guy, thanks for the link. I'll give it a check tomorrow and see what I get. I had considered that there might be a problem with the connector and this should confirm or eliminate.
Reply With Quote
  #8  
Old 02-04-2011, 06:06 PM
Cage Fighter Cage Fighter is offline
New User
 
Join Date: Feb 2011
Posts: 3
Cage Fighter is starting off with a positive reputation.
OK, ran the tests according to the video and all was fine until the SIG RTN. Should have had approx. 1.0V at idle and had approx.10mV with no change at WOT. It looks like I might have a short somewhere.
Reply With Quote
  #9  
Old 02-05-2011, 08:10 AM
rla2005's Avatar
rla2005 rla2005 is offline
Post Fiend
 
Join Date: Oct 2005
Location: Illinois
Posts: 7,904
rla2005 is a splendid one to beholdrla2005 is a splendid one to beholdrla2005 is a splendid one to beholdrla2005 is a splendid one to beholdrla2005 is a splendid one to beholdrla2005 is a splendid one to beholdrla2005 is a splendid one to behold
Minor correction, the Signal Output (Not Signal Return) in the video was ~1.0VDC at closed throttle throttle then progresses to ~4.5VDC at WOT. FWIW the closed throttle voltage can be anywhere between 0.6 - 1.0 VDC.

You said you measured the TPS output with an Ohm meter in your first post. Did you ever look at the resistance from the VREF wire and Signal Return and/or Signal Output? The TPS could be open internally.
__________________
2013 Ford Taurus Limited 3.5L
2006 Ford Mustang GT 5-speed 3v 4.6L
rla2005@yahoo.com
Randy A | Central Illinois
Reply With Quote
Old 02-05-2011, 08:10 AM
 
 
 
Reply

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

Tags
1986, 53, 92, bronco, code, engine, f150, f350, ford, meter, ohm, position, sensor, testing, throttle, tps, truck

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 07:17 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