Go Back   Ford F150 Forum - Community of Ford Truck Fans > Pre-1997 F150 > 1987 - 1996 F150
Sign in using an external account
Register Forgot Password?


Welcome to F150 Forum!
Welcome to F150 Forum,

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, 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 free, fast and simple, so please join our community today!


Reply
 
 
 
 
Thread Tools Search this Thread Display Modes
Old 12-15-2009, 01:33 PM   #1
Member
5 Year Member
 
Join Date: Sep 2007
Posts: 59
Mentioned: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Default 1992 5.8 F250 Idle Problem - Really wierd!

Problem getting worse and worse.

Idle surges up and down, about 70% of the time when the engine is warm. Sometimes it goes away completely. Please read all of the below points.

The Battery Gauge is very low without starting the car. It DOES start, even in 10 degree temps, so I dont think the battery is shot. The alternator charges when I hit the gas very quickly and efficiently.

The idle gets better when I put MORE draw (heat, more lights, etc.) on the electrical system, curiously, but it idles VERY low. (But the sturging stops or gets 80% better most of the time).

Now when I START the truck, i often hear an awful noise through the CD player, mid-low pitched noise for 3-5 seconds.

Also, my headlights are HID's,.. but when the truck is off they don't get enough power at the headlight plugs to power up. If I turn the car off while they are on (and only drawing 30 watts), they cut out within 10 seconds.

I am beginning to think this is a ground issue.

Also, my belt is squeaking, but seems tight. Could the belt also contribute to this?

The Idle surging has been steady through the following repairs:
IAC Valve, MAP Sensor, Vacuum Leak Repair, Sea Foam through Gas tank, New Battery terminals,FULL tune-up (Plugs, Wires, Distributor cap and rotor, Gas Filter, etc.), Reset computer properly, checked for unplugged items.

Car idles WORSE as it warms up, typically it runs fine upon first fire-up (when idle is high of course, it's getting more gas) But recently it's been getting worse, quicker.

I was told one of my plugs may be arching (but this guy is an idiot, and i just replaced them?) Not sure how reliable this is.

Yesterday the bat gauge waved up and down a bit, and the lights on my CD player pulsed a bit as well. Any suggestions?

The car has TONS of pick up, engine is responsive, and not sluggish.. except at idle.

I want to rule out inexpensive fixes before I waste time with the TPS sensor (since this is NOT a common issue with the 351 windsor from what I've read)

Can anyone offer any help? Nobody has a code reader for this vehicle and I'm a broke college student now, I can't afford to pay 100 just to have a code read, that's ridiculous. Please help.
__________________
2012 FX4 F150.... mods coming!!
Show Charger- Air ride, 22" Floaters, Black/White 2-tone, Halos, HIDs, TVS,
2003 Exploder 4x4 on 24's, 4 12s, Halos, more
1998 Old White Taurus BEATER
ChargerOnDavins is offline   Reply With Quote
Old 12-15-2009, 03:02 PM   #2
Assistant Administrator
5 Year Member
 
ymeski56's Avatar
 
Join Date: Jul 2008
Location: Long Beach Calimexifornia
Posts: 30,714
Mentioned: 12 Post(s)
Thanks: 49
Thanked 561 Times in 332 Posts
Feedback Score: 0 reviews
Default

The second thread on the thread list instructs you how to do an error code scan manually (&free) or $20./ships same day for a digital numeric reader:http://www.handsontools.com/Equus-In...ol_p_5574.html
__________________
"Saving the World....One Ford Truck at a Time."

Last edited by ymeski56; 12-15-2009 at 03:05 PM.
ymeski56 is online now   Reply With Quote
Old 12-15-2009, 03:02 PM
 
 
 
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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 Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Wierd F-150 starting problem hawg20 Introductions 7 03-29-2010 12:12 AM
1992 5.8 Persistent Idle Problem (occasionally occurring) desperately need fixed ChargerOnDavins 1987 - 1996 F150 19 12-15-2009 02:53 PM
Few problems with 1992 F250 5.8 - Brakes, Idle, 4x4 ChargerOnDavins 1987 - 1996 F150 4 10-10-2009 01:51 AM
1992 f250 4x4 locking hub problem and idle problem ChargerOnDavins 1987 - 1996 F150 6 08-28-2009 02:35 AM
wierd idle at start fordfan1991 1987 - 1996 F150 2 01-15-2009 08:51 PM

 

The Mustang Source
All times are GMT -4. The time now is 12:33 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.5.2
Copyright 2006 - 20011 F150forum.com
This site is in no way affiliated with the Ford Motor Company.