- Joined
- Apr 15, 2012
- Messages
- 571
- Reaction score
- 26
- Points
- 28
- Location
- Brandon, Manitoba
- Vehicle Year
- 1988
- Make / Model
- Ford
- Engine Size
- 2.9
- Transmission
- Manual
Been Chasin (Hi everyone !) Been chasin this dern problem for over a year now, "decides to run rough, beltches, farts, and in general, bad gas mileage"...
So the other night, I got really, I mean REALLY pissed at my Ranger, grabbed my oscilloscope of my electronics bench, my 500 watt inverter, and fired up the oscilloscope from the passengers footwell, so I could watch the PIP line while driving around at dusk.
Notice this stupid "back curve" every now and then in the pulse train comming off the PIP line from the engine computer... Funny, the back curve is when the engine misses or beltches (not all the time).
I stop, open the hood, and "POOF" the coil looks more like the glow from a plasma cutter than a coil, Scotty, Warp 6 please !
Honest to god, the coil looks like a plasma generator, and every now and then ZAP !, a nice big blue arc, and the engine misses.......
36 bucks later, and a nice pretty blue "Standard" ignition coil , problem gone....
in ALL my 38 years of engines.... NEVER have I SEEN THIS ONE.
For those that have rough running 2.9's check the coil.........................
Greg
So the other night, I got really, I mean REALLY pissed at my Ranger, grabbed my oscilloscope of my electronics bench, my 500 watt inverter, and fired up the oscilloscope from the passengers footwell, so I could watch the PIP line while driving around at dusk.
Notice this stupid "back curve" every now and then in the pulse train comming off the PIP line from the engine computer... Funny, the back curve is when the engine misses or beltches (not all the time).
I stop, open the hood, and "POOF" the coil looks more like the glow from a plasma cutter than a coil, Scotty, Warp 6 please !
Honest to god, the coil looks like a plasma generator, and every now and then ZAP !, a nice big blue arc, and the engine misses.......
36 bucks later, and a nice pretty blue "Standard" ignition coil , problem gone....
in ALL my 38 years of engines.... NEVER have I SEEN THIS ONE.
For those that have rough running 2.9's check the coil.........................
Greg