General Technical & Electrical General technical and electrical discussion for the Ford Ranger that does not fit in any other sub-forum.

Spark at coil but not at plugs.

Thread Tools
 
Search this Thread
 
Old Jul 25, 2016
  #1  
herbie22's Avatar
Thread Starter
|
Member
Joined: Jun 2012
Posts: 2
Likes: 0
From: Clearwater, FL
Spark at coil but not at plugs.

I have a 1994 Ford Ranger and the coil wire going to the distributor has electricity going through it but when I pull a plug to check for spark, there is no spark. I was involved in a fender bender when it happened but it did almost no damage to my front end. I am not sure if I might have tripped something. I checked the button under the passenger floor carpet and it is fully depressed but I think this is a fuel shut off anyway not an electrical shutoff.

Thanks.
 
Reply
Old Jul 25, 2016
  #2  
Jeff R 1's Avatar
Member
Joined: Jul 2016
Posts: 2,022
Likes: 44
From: BC Canada
Sorry, I have to ask, when you check for spark at the actual plug, are you grounding the outside of the plug ?
 
Reply
Old Jul 25, 2016
  #3  
RonD's Avatar
RF Veteran
iTrader: (1)
Joined: Jan 2014
Posts: 30,635
Likes: 2,949
From: Vancouver, BC
Welcome to the forum

Guessing 3.0l engine???

I think '94 3.0l was the last/only ranger with distributor.

Pop the distributor cap and see if rotor is turning.

Easiest thing to do is to add fuel to the intake, spray in some gas or ether(quick start) and see if it starts.
If it starts and dies spark is good fuel is bad
If it doesn't start the spark is bad.

If no spark check connection on TFI module on the side of distributor, unplug it and plug it back in.
 
Reply
Old Jul 26, 2016
  #4  
herbie22's Avatar
Thread Starter
|
Member
Joined: Jun 2012
Posts: 2
Likes: 0
From: Clearwater, FL
3.0 liter. I have 12 volts at coil and hooked a spark plug up directly to coil and no spark. Rotor is spinning. When I hook a multimeter up to the coil and crank, no change.
 
Reply
Old Jul 26, 2016
  #5  
RonD's Avatar
RF Veteran
iTrader: (1)
Joined: Jan 2014
Posts: 30,635
Likes: 2,949
From: Vancouver, BC
TFI module then or its wires
Go here: Ford EEC-IV/TFI-IV Electronic Engine Control Troubleshooting

print the worksheet and do the voltage OHMs test

TFI module gets pulse from sensor in the distributor, Module then pulses Coil(grounds it) to generate spark.

Coils get 12v when key is on, the Ground(-) is what pulses on and off to cause the coil to spark, has always been that way, the old points setup in a distributor was the Ground for the coil, opened and closed to ground and unground the coil.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
vancouverisland
4.0L OHV & SOHC V6 Tech
13
Sep 9, 2019 05:16 AM
Sic'em Bears
General Technical & Electrical
7
Jan 10, 2011 06:48 AM
Type_Ranger
General Technical & Electrical
6
Jun 10, 2007 04:53 PM
SnowWhite
4.0L OHV & SOHC V6 Tech
3
May 29, 2007 05:06 AM
Fx4wannabe01
General Technical & Electrical
9
May 22, 2007 10:55 AM




All times are GMT -6. The time now is 05:58 AM.