89.ho.ss
Well-Known Member
Yes I had power at the relays but the grounds were flickering. I had tried shaping relays to see if it made a difference but it didn't. Unless both relays are bad but the grounds at the relays were flickering
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1997 international 4900
- Thread starter 89.ho.ss
- Start date
mekanik
Senior Member
The IDM relay looks to be grounded through the ECM pin 33.
The diagram does not show where the ground for the ECM power relay is connected.
Probably a body ground somewhere.
It might be an idea to make up a new ground connection for it.
Make sure you ground the correct relay.
Terry
The diagram does not show where the ground for the ECM power relay is connected.
Probably a body ground somewhere.
It might be an idea to make up a new ground connection for it.
Make sure you ground the correct relay.
Terry
89.ho.ss
Well-Known Member
I will try that. I am confused at what the third relay is but I will check it now. Thank you
89.ho.ss
Well-Known Member
Ecm pin 33 solid ground with the key off. Turn key on and it flickers
mekanik
Senior Member
When the ECM relay clicks on and off the ECM powers on and off so
the IDM ground supplied by the ECM will go on and off or flicker I suspect.
Try grounding pin 5 on the ECM relay.
the IDM ground supplied by the ECM will go on and off or flicker I suspect.
Try grounding pin 5 on the ECM relay.
Last edited:
89.ho.ss
Well-Known Member
Pulled the ecm relay one had a solid power and three grounds solid with the key on and the relay pulled
Last edited:
mekanik
Senior Member
How are you testing the grounds?
89.ho.ss
Well-Known Member
I am using a test light with it hooked to power on the batt
mekanik
Senior Member
Try grounding pin 5 on the ECM relay.
89.ho.ss
Well-Known Member
Ok I'll go try that
89.ho.ss
Well-Known Member
After testing everything the truck won't crank over now
89.ho.ss
Well-Known Member
I am not a
89.ho.ss
Well-Known Member
I am not sure what pin five on the relay is. As in which one there is a 87 30 86 85 87
mekanik
Senior Member
It will not crank with pin 5 grounded?
89.ho.ss
Well-Known Member
It won't crank with nothing done to it. Not positive on which pin is pin 5 on the relay
mekanik
Senior Member
When I get home from work I will post some more diagrams.
Terry
Terry
89.ho.ss
Well-Known Member
I appreciate your help very much. Thank you
mekanik
Senior Member
Check Your Private Messages.
Terry
Terry
89.ho.ss
Well-Known Member
Ok first off I was checking the ecm plugs backwards what I thought was pin 41 was actually pin 1 so with that said pin 57 and pin 1 only have 6.68 Volta with the key on. With the key off pin 1 has only 9.3 volts. Battery's have 12.5
89.ho.ss
Well-Known Member
Ok at pin 1 if I put my test light into it and test for power there is only a couple volts. If I run a jumper wire to the test light from the power. To give pin one full voltage it has no more clicking on the relays and when I tried to turn it over it was actually trying to start