Go Back   F150online Forums > Body > Electrical Systems
Sign in using an external account
Register Forgot Password?

Electrical Systems SPONSORED BY:

Welcome to F150Online Forums!
Welcome to F150Online.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 F150Online Forums community today!





Reply
 
 
 
 
Thread Tools Search this Thread Display Modes
  #1  
Old 02-03-2003, 01:28 PM
Senior Member
 
Join Date: May 2000
Location: River Ridge, LA, USA
Vehicle: 2000 Ford F150
Posts: 329
Send a message via Yahoo to OE812
How Do You Know When Coil Pack Is Bad?

I have a 2000 F150 and wondering if a coil pack is going bad. How do I diagnose? I get an intermittant rough idle. I cleaned the throttle and Motor Control Valve and ran fuel cleaner.

Jeff
Reply With Quote
  #2  
Old 02-04-2003, 09:02 AM
Senior Member
 
Join Date: Jan 2000
Location: South of the Red River
Vehicle: 2000 Ford F150
Posts: 368
i'm in the same boat. Replacing for the sake of replacing isn't cost effective.
__________________
2000 F-150 XLT Sport, Silver 4-door Supercab StyleSide
Short Bed (Only way to fit in the garage)
17" Sport Wheels with BFG tires, 3.55 Open, 4.6l V8,
Automatic Trans (First one in 20 years)
In-Dash Single CD Player, 60/40 Split bench - dark graphite

MODS SO FAR
Gatorback Spray-In Bedliner, Llumar ProShield Window Tint
WMS Velocity Tube (removed due to hum), Black Westin Step Bars, Lund Trident Hood Deflector (removed to paint), Fumoto Oil Drain Valve, FlowMaster Delta Flow 50 muffler in place of stock, DeeZee Silver Series Black Single Lid ToolBox; Extang Black Max tonneau cover; Factory Tech Valve Body & Accumulators; 5-channel amp w/ 8" RF sub in custom box and 5x7 Pioneer speakers;Superchip MicroTuner model 1715


Reply With Quote
  #3  
Old 02-04-2003, 10:06 PM
Senior Member
 
Join Date: Nov 2001
Location: Dallas, TX
Vehicle: 2001 Ford F-150
Posts: 395
Send a message via AIM to TEK2000
Have you tried checking with the dealer? I've got a 2001 and had a rough idle problem too.. very noticeable when in gear and stopped at a red light or something.

They did a software upgrade on my computer and the problem went away.

Some bright guy at Ford didn't care to take into account that if the batter is disconnected or goes dead.. you just reset the computer back to fatory settings.. meaning no more software upgrade and my problem came back again. They need to use a memory type that stores the software changes despite losing power.
__________________
2001 F-150 SuperCab Flareside 4X2 4.6L V8
Auto

System:
Kenwood KDC-X859 Head Unit
Kenwood Music Keg KHD-C710
2 Phoenix Gold Tantrum 250.2 Amps
1 set of Focal 136K 5 3/8" Polykevlar Components
1 - 10" Audiomobile EVO Sub
All Phoenix Gold wiring

Gallery:
http://www.f150online.com/galleries/....cfm?gnum=1943
Reply With Quote
  #4  
Old 02-05-2003, 08:41 AM
Senior Member
 
Join Date: Jan 2000
Location: South of the Red River
Vehicle: 2000 Ford F150
Posts: 368
Quote:
Originally posted by TEK2000
Have you tried checking with the dealer? I've got a 2001 and had a rough idle problem too.. very noticeable when in gear and stopped at a red light or something.

They did a software upgrade on my computer and the problem went away.

Some bright guy at Ford didn't care to take into account that if the batter is disconnected or goes dead.. you just reset the computer back to fatory settings.. meaning no more software upgrade and my problem came back again. They need to use a memory type that stores the software changes despite losing power.
Not sure I understand what you're saying here. The PCM program is not stored in RAM that is erased when power is removed. I believe its installed in a EEPROM type device which retains memory when power is removed.
Reply With Quote
  #5  
Old 02-09-2003, 09:07 AM
Senior Member
 
Join Date: Apr 2001
Location: This side of the Milky Way
Vehicle: 1908 Ford Model T
Posts: 1,548
Send a message via ICQ to LeanNCut Send a message via AIM to LeanNCut Send a message via Yahoo to LeanNCut
Clean the MAF sensor, unless your rough idle is some really serious problem. That actually worked for me.
__________________
Reply With Quote
  #6  
Old 02-09-2003, 12:29 PM
Technical Article Contributor
 
Join Date: Jun 2002
Location: Under the flightpath of ORD 22R
Vehicle: 2006 FORD F150
Posts: 10,264
MAFS is one to clean, the other thing to look at is the IAC, these seems to have problems getting crapped up, and causing idle problems for some.

LMC cleaned his awhile back, and it stil is fone after 12 to 14 months if memory serves me correctly.

If you want to try a search on this use IAC* as the term.

Let us know what happens with it, what you try and what worked.
Reply With Quote
  #7  
Old 02-09-2003, 02:04 PM
Senior Member
 
Join Date: Jun 2002
Location: Arizona
Vehicle: 2000 Ford
Posts: 1,162
Send a message via AIM to Spanky99L
Re: How Do You Know When Coil Pack Is Bad?

Quote:
Originally posted by OE812
I have a 2000 F150 and wondering if a coil pack is going bad. How do I diagnose? I get an intermittant rough idle. I cleaned the throttle and Motor Control Valve and ran fuel cleaner.

Jeff
when a coil pack is bad you will have a severe miss when giving throttle. it will be hard to distinguish while at idle. Also you will get a code and when you read the code on a scanner it will be a engine misfire cyl x (fill x with cylinder coil pack thats bad)
__________________

WHIPPLECHARGED!!!
Reply With Quote
  #8  
Old 02-10-2003, 05:25 PM
Senior Member
 
Join Date: Nov 2001
Location: Dallas, TX
Vehicle: 2001 Ford F-150
Posts: 395
Send a message via AIM to TEK2000
Perhaps they are using EPROM to store the main program. All I know is.. I take my truck to the shop and explain that its got a shake while idling. He upgrades my computer software and the problem is gone... life is good. MY airbags get stolen (battery is disconnected to prevent airbag blowing up in theif's face.. smart theif). Thus my computer is reset and the problem with rough idle returns.

This indicates to me that if the computer is reset... all changes to software program are reset as well. If ALL of the program is burned into the EPROM it should still have stored the software changes as well as the original program.

I'm not trying to argue with you... just stating my ASSUMPTION.
__________________
2001 F-150 SuperCab Flareside 4X2 4.6L V8
Auto

System:
Kenwood KDC-X859 Head Unit
Kenwood Music Keg KHD-C710
2 Phoenix Gold Tantrum 250.2 Amps
1 set of Focal 136K 5 3/8" Polykevlar Components
1 - 10" Audiomobile EVO Sub
All Phoenix Gold wiring

Gallery:
http://www.f150online.com/galleries/....cfm?gnum=1943
Reply With Quote
  #9  
Old 02-11-2003, 07:17 AM
Junior Member
 
Join Date: Feb 2003
Location: Pennsylvania
Vehicle: 2000 Ford F150
Posts: 8
Not an expert on the Ford computer system, However it is possible to load a program into systems and not burn it to the eeprom. That may be why you lost the upgrade. just a theory
Reply With Quote
Old 02-11-2003, 07:17 AM


 
 
 
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 On
Refbacks are Off


All times are GMT -4. The time now is 03:43 AM.


 
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
Contact Us Advertising Privacy Statement Terms of Service Jobs Forum Text Archives
Emails & Contact Details