coil pack or plug wire?? - MustangForums.com


4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

Reply
 
 
 
Thread Tools Search this Thread
Old 07-02-2008, 09:29 PM   #1  
my77stang
6th Gear Member
Thread Starter
 
my77stang's Avatar
 
Join Date: Dec 2006
Location: Citrus County, FL
Posts: 8,007
Default coil pack or plug wire??

i have a 4.6 no-pi boat anchor in my 94 lincoln town car and it has 2 coils packs. a few times in the past couple weeks when i accelerate its kinda dogish and has like half the power it should first i was thinking maybe a clogged fuel filter (checked air cleaner and it still looks new), but the other day i had to jump a car and while i was under the hood i heard what sounded like a wire grounding out (zap-zap-zap) when i revved the motor but i didnt hear anything @ idle. it sounded like it was coming from the passenger side coil pack, so i looked at all the boots real closely and saw nothing.

today i go out there and spray water on the coil, start it up and rev it and i hear nothing - so i go to drive down the road and its sluggish off the line again. also, seems worse when the car is still cold for some reason, not that that makes much sense.

so my question is, can coil packs ground out internally and work intermittantly or is it always a cut and dry work or not work situation.

the wires say belden (napa) so i know they arent original, the car is 14 years old but only has like 60k miles on it so the wires cant possibly have too many miles on them.


my77stang is offline   Reply With Quote
Old 07-02-2008, 10:17 PM   #2  
blackstallion666
4th Gear Member
 
blackstallion666's Avatar
 
Join Date: Jun 2007
Location: Cumberland County NJ
Posts: 1,369
Default RE: coil pack or plug wire??

is it misfiring or just being a dog?
blackstallion666 is offline   Reply With Quote
Old 07-02-2008, 10:24 PM   #3  
black35th
4th Gear Member
 
black35th's Avatar
 
Join Date: Jun 2007
Location: Ohio
Posts: 1,996
Default RE: coil pack or plug wire??

I would almost throw my guess on a dirty/faulty MAF sensor if it doesnt have a miss....
black35th is offline   Reply With Quote
Old 07-03-2008, 07:09 AM   #4  
my77stang
6th Gear Member
Thread Starter
 
my77stang's Avatar
 
Join Date: Dec 2006
Location: Citrus County, FL
Posts: 8,007
Default RE: coil pack or plug wire??

yeah i wouldnt quite call it a miss, more like serious hesitation.... although i did hear it POP once out the exhaust
my77stang is offline   Reply With Quote
Old 07-03-2008, 07:45 AM   #5  
black35th
4th Gear Member
 
black35th's Avatar
 
Join Date: Jun 2007
Location: Ohio
Posts: 1,996
Default RE: coil pack or plug wire??

Has it thrown a SES light?
black35th is offline   Reply With Quote
Old 07-04-2008, 09:00 AM   #6  
my77stang
6th Gear Member
Thread Starter
 
my77stang's Avatar
 
Join Date: Dec 2006
Location: Citrus County, FL
Posts: 8,007
Default RE: coil pack or plug wire??

no, but then again i remember once way back i got a light and they couldnt pull a reading from the car, it was really wierd.
my77stang is offline   Reply With Quote
Old 07-04-2008, 09:11 AM   #7  
black35th
4th Gear Member
 
black35th's Avatar
 
Join Date: Jun 2007
Location: Ohio
Posts: 1,996
Default RE: coil pack or plug wire??

I would probably start by cleaning your MAF sensor, you can go to the store and get a can of "electronics cleaner". It should be in an aresol can.
black35th is offline   Reply With Quote
Old 07-04-2008, 09:22 AM   #8  
96GT226410
CSMG Moderator
 
Join Date: Mar 2006
Location: New Jersey
Posts: 3,503
Default RE: coil pack or plug wire??

How did your plug wire ends look? If you head the spark arcing then at least throw plugs, wires, and coil packs on. A dirty MAF sensor would not cause spark arcing.
96GT226410 is offline   Reply With Quote
Old 07-04-2008, 10:26 AM   #9  
black35th
4th Gear Member
 
black35th's Avatar
 
Join Date: Jun 2007
Location: Ohio
Posts: 1,996
Default RE: coil pack or plug wire??

Quote:
ORIGINAL: 96GT226410

How did your plug wire ends look? If you head the spark arcing then at least throw plugs, wires, and coil packs on. A dirty MAF sensor would not cause spark arcing.
True, but he said that he went out and sprayed water on it and started it, and it didnt do it. Plus the fact that he said it's worse when its cold out, arcing can and will occur at any temperature.

If the coil packs/wires/plugs were bad, he would have a definate miss, although I cant explain the "zap-zap-zap". His problem is more of a severe hesitation rather than a miss.

If your MAF sensor is dirty it will cause a severe hesitation, and when its cold it will be alot worse.
black35th is offline   Reply With Quote
Old 07-04-2008, 02:08 PM   #10  
96GT226410
CSMG Moderator
 
Join Date: Mar 2006
Location: New Jersey
Posts: 3,503
Default RE: coil pack or plug wire??

Quote:
ORIGINAL: black35th

Quote:
ORIGINAL: 96GT226410

How did your plug wire ends look? If you head the spark arcing then at least throw plugs, wires, and coil packs on. A dirty MAF sensor would not cause spark arcing.
True, but he said that he went out and sprayed water on it and started it, and it didnt do it. Plus the fact that he said it's worse when its cold out, arcing can and will occur at any temperature.

If the coil packs/wires/plugs were bad, he would have a definate miss, although I cant explain the "zap-zap-zap". His problem is more of a severe hesitation rather than a miss.

If your MAF sensor is dirty it will cause a severe hesitation, and when its cold it will be alot worse.

Spark arcing can be intermittent, too. I've seen it. If his MAF was dirty, a hesitation could occur, but will most likely have different problems such as a long crank time and an intermitten no start.
96GT226410 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Labor Day Weekend Special Granatelli Sales GT S197 General Discussion 5 03-25-2016 08:01 PM
Labor Day Weekend Special Granatelli Sales The New S550 2015-2019 Mustang 5 12-27-2015 06:28 PM
Low RPM hesitation / misfire between 900-1200 Omgitsa88Stang 5.0L General Discussion 5 10-05-2015 07:33 AM
Diagnosing Fuel Pump & Pressure SteelerNation82 V6 (1994-2004) Mustangs 1 09-16-2015 07:11 AM
Noob needs help! 86 mustang svo motor swapped to 71 5_speed carb 302 v8 jaiidutch Motor Swap Section 2 09-14-2015 10:29 AM


Tags
04, 1995, 94, arcing, car, coil, connects, end, miss, modular, mustang, pack, testing, town, wiring

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 Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Advertising
Featured Sponsors
Vendor Directory

All times are GMT -5. The time now is 11:57 PM.


© 2018 MH Sub I, LLC dba Internet Brands
We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.