How can I tell if my ICP is short to ground?

Measure resistance from PIN C to Ground (spec >500Ω) and from PIN C to PIN 16 (spec <5Ω) using a breakout box to determine if short to ground or open is in the harness. Standard jumper installed between the BLUE, GREEN, and BLACK pins of the breakout tee. If voltage is >0.039V, check ground circuit for resistance.

When does an ICP signal go out of range?

An Out of Range HIGH code 125 will be set by the ECM if the signal voltage is greater than 4.9V for more than 1.0 seconds. Diagnostic Trouble Code 125 may be set by an open return circuit (ground), short to a voltage source on the ICP signal circuit or a defective sensor.

What happens to the ICP code when the ignition is shut off?

If the ignition key is shut off, the code will become inactive. ICP Diagnostic Trouble Codes can be retrieved using the Electronic Service Tool (EST) or by reading the Diagnostic Trouble Code flashes from the amber and red ENGINE lamps, see . If the ignition key is shut off, the code will become inactive.

What should be the PSI of the ICP sensor?

Install a mechanical 5000 psi guage in place of the ICP sensor and verify you still have around 800 to 900 psi cranking. You should also have around 3000 psi up to high RPM if the engine were running.

What should I do about my 584 pick up?

Couple things to check would be the filter and suction screen at the pick up. Also could be sucking air in the pick up line too, so check for cracks and loose fittings. Could be the pump is wearing out, especially if it started slowing gradually. Just got back out on the 584….

What happens if I Run my engine without an ICP?

Running without an ICP may not cause any damage but also may not allow your engine to operate in its most efficent manner. You mentioned that you dont have all the power while the ICP is disconnected.

Is there a problem with my 584 international loader?

584 International Problem. Had this unit for about since 1982. Few problems until just lately. Yesterday the loader, #2250 stopped going up, or should say it goes up but sloooooooooooooly. Never did this before. Checked oil in rear end, all was fine, dip stick showed it at right level etc.

Can a Unplugged ICP sensor cause driveability issues?

I also feel that a Plugged in “Malfunctioning” ICP sensor would be far worse than an unplugged icp sensor. Yes, a malfunctioning/erratic reading ICP sensor will cause driveability issues, no doubt about that. The default table that the PCM reverts to when the ICP is unplugged is probably fine to run as you have proven that, but not ideal.