misterW
Member
- Joined
- Feb 15, 2010
- Messages
- 90
- Reaction score
- 4
- Points
- 8
- Vehicle Year
- 1994
- Make / Model
- Ford
- Transmission
- Manual
I was testing my EEC power relay coil in my 1991 3.0 and noticed something strange. The resistance value of the control coil was 1 (infinite). This would seem to indicate that the circuit was open, which it shouldn't be. Yet, when I applied 12v to the two spades of the control coil, there was a click and the other circuit pathway closed like it should (based on resistance testing).
I tested a couple of other relays (a fuel pump relay from the same truck and an EEC power relay from a 94 ranger) and their control coil circuits showed resistance values of around 60 ohms.
So I figured the relay in my 1991, while apparently still functioning to a degree, had something wrong with it.
I just tested the resistance of the control coil circuit in the new relay that I bought and it was 1 also!
So what is going on here? Shouldn't the control coil circuit be closed? Wouldn't a value of 1 indicate a problem?
I tested a couple of other relays (a fuel pump relay from the same truck and an EEC power relay from a 94 ranger) and their control coil circuits showed resistance values of around 60 ohms.
So I figured the relay in my 1991, while apparently still functioning to a degree, had something wrong with it.
I just tested the resistance of the control coil circuit in the new relay that I bought and it was 1 also!
So what is going on here? Shouldn't the control coil circuit be closed? Wouldn't a value of 1 indicate a problem?