Loss of ignition...
- Thread starter Guero
- Start date
-
Sponsors (?)
bill302
Active Member
See that big connector plugged into the ignition module on the distributor?
See the smaller connector hanging off the original wire bundle, a few inches
back, small and square, about the size of your fingertip, with a square
"jumper" plug that you can pull out? That's the spout (SPark OUT) jumper.
When inserted, it lets the nice new computer control the ignition timing.
When removed, the computer locks the timing at a preset value.
When grounded, usually by the wire bundle being cut or rubbed through
(somewhere between the distributor and computer) allowing the bare wires
to touch body metal, the computer and ignition module screw up, the
engine shuts down.
I would get in there with a good light, and trace that bundle as far as you
can back towards the glovebox where the computer lives, carefully checking
for any fraying or chafing of the outer insulation, particularly where the bundle
goes through clamps, or makes sharp turns.
See the ugly grey sensor mounted near the egr?
thats the egr pressure sensor!It's electric! That explains why it shorted
out causing the computer to shutdown after a few minutes of
operation.Unplugging that bad ugly grey sensor made the bad problem go
away!!
copied info from link check it out it might help.good luck hope it helps you.
http://www.fordforums.com/archive/index.php/t-101382.html
See the smaller connector hanging off the original wire bundle, a few inches
back, small and square, about the size of your fingertip, with a square
"jumper" plug that you can pull out? That's the spout (SPark OUT) jumper.
When inserted, it lets the nice new computer control the ignition timing.
When removed, the computer locks the timing at a preset value.
When grounded, usually by the wire bundle being cut or rubbed through
(somewhere between the distributor and computer) allowing the bare wires
to touch body metal, the computer and ignition module screw up, the
engine shuts down.
I would get in there with a good light, and trace that bundle as far as you
can back towards the glovebox where the computer lives, carefully checking
for any fraying or chafing of the outer insulation, particularly where the bundle
goes through clamps, or makes sharp turns.
See the ugly grey sensor mounted near the egr?
thats the egr pressure sensor!It's electric! That explains why it shorted
out causing the computer to shutdown after a few minutes of
operation.Unplugging that bad ugly grey sensor made the bad problem go
away!!
copied info from link check it out it might help.good luck hope it helps you.
http://www.fordforums.com/archive/index.php/t-101382.html
S/CBlack95GT
New Member
Guero said:
That's just static. I get that everytime too with all my vehicles when the humidity is low.
bill302
Active Member
You did not understand what I said, and now I dont understand what you said.Guero said:
A DMM = Digital Multi-Meter. A voltmeter, in other words.
Short-to-ground is when a wire has chafed and the stands in the wire are touching metal. The signal in the wire is shorting to ground.
Good luck.
Similar threads
