Engine Mechanical problem
1984 GMC Van V8 Two Wheel Drive Automatic
1984 GMC Van with 6.2 diesel engine.
Starter continues to run after key is released.
TEST: I tested wire that goes from ignition switch " start" position to selenoid " S" terminal, (test performed with wire disconnected from selenoid " S" terminal).
TOOL USED: Digital multimeter
RESULTS: Key on start position=12 volts
key released to run position=0 volts
TEST: Bench test starter and selenoid (off vehicle) as follows: 12 volts to battery lug on selenoid, jump with screwdriver between battery lug on selenoid and " S" terminal of selenoid, thereby providing 12 volts to " S" terminal of selenoid.
RESULTS: Screwdriver touching " S" terminal= starter engages and runs.
Screwdriver removed (power terminated to " S" terminal)= starter stops.
These tests indicate to me that wire to " S" terminal of selenoid is OK, that selenoid is OK.
Somehow, power is going to selenoid after key is released, causing it to stay engaged.
I have been told the starter itself has a short, but no one can explain how or how to test it.
I am 62 year old cancer patient living on $674 per month disability and can not afford to replace starter without being absolutely sure it is at fault.
Same reason prevents me from making a contribution, I am sorry.
Sunday, December 27th, 2009 AT 3:11 AM