Quote:
|
Originally Posted by shorod
You could pick up an inline spark test (they're around $3 from Harbor Freight) and see if you can see the misfire in the spark tester when the car is idling. Install the tester between the coil and plug wire. If the light drops out (indicating no spark) and with the apparent crack in the coil housing, that's probably a good indication that you have a bad coil. If you really wanted to be sure, you could find a portable 2-channel oscilloscope, watch the coil primary on one channel and use a high-voltage probe to watch the secondary of the same coil to make sure you have primary trigger even when you don't have secondary spark. That would pretty much guarantee proper diagnosis as long as you have good plug wires, good plugs, and good connections.
-Rod
|
The problem is the engine doesn't misfire at idle, at least I haven't noticed it. It only happens while I'm driving, usually at a steady speed with the engine under a slight load (going up a hill).
I purchased a new set of Borg Warner plug wires and Motorcraft plugs to go in the vehicle. The connections seemed very good and secure. The car starts up easilly and idles very well. The problem only begins to occur once I have driven for a bit and warmed the engine up completely, and then it only does it intermittently.