The vehicle:
1993 3.0 Aerostar
108,000 miles
Replaced the fender mounted ICM,(aftermarket & has no name on it) about 7 years ago and have not driven the van more than a half dozen times in the past 2 1/2 years...last driven about a year ago...Street into the driveway.
Current state: Cranks but no spark.
To trouble shoot the no spark issue I followed the instructions on:
Part 1 -How to Test the Ignition Coil (Ford 2.9L, 3.0L, 3.8L)
and
Part 1 -How to Test the Ford Ignition Control Module (Fender Mounted)
I followed all the Parts...
I get to the very last step which uses an LED test light.
Negative lead is connected to the PIP wire at the ICM.
The positive lead connects to Battery +.
I crank the engine and the LED blinks as the engine continues to turn over.
Prognoses: The ICM is bad.:1read:
OK.
I have a spare ICM & heatsink. (A motorcraft I picked up the last time I was at the salvage yard)
Lets put that in...and do the LED test...
I crank the engine and the LED does not blink as the engine continues to turn over.
Prognoses: The PIP is bad.:whoaa:
????
This method for testing the Aerostars PIP & ICM seems to be flawed...
...or is it just the owner?:doh:
1993 3.0 Aerostar
108,000 miles
Replaced the fender mounted ICM,(aftermarket & has no name on it) about 7 years ago and have not driven the van more than a half dozen times in the past 2 1/2 years...last driven about a year ago...Street into the driveway.
Current state: Cranks but no spark.
To trouble shoot the no spark issue I followed the instructions on:
Part 1 -How to Test the Ignition Coil (Ford 2.9L, 3.0L, 3.8L)
and
Part 1 -How to Test the Ford Ignition Control Module (Fender Mounted)
I followed all the Parts...
I get to the very last step which uses an LED test light.
Negative lead is connected to the PIP wire at the ICM.
The positive lead connects to Battery +.
I crank the engine and the LED blinks as the engine continues to turn over.
Prognoses: The ICM is bad.:1read:
OK.
I have a spare ICM & heatsink. (A motorcraft I picked up the last time I was at the salvage yard)
Lets put that in...and do the LED test...
I crank the engine and the LED does not blink as the engine continues to turn over.
Prognoses: The PIP is bad.:whoaa:
????
This method for testing the Aerostars PIP & ICM seems to be flawed...
...or is it just the owner?:doh: