Quote:
Originally Posted by bigred350
This sounds a little like the problem I am having with my truck. I do not get A cel light. I have changed the injector o-rings and installed a new ipr. no help on the ilde I am suspecting the icp but do not what to keep putiing parts on it and having no help. When I pull my connector on my icp my engine dies? any way to test this sensor? I need help to.
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Unplugging the sensor ,,the engine should keep running ...
You need a minimum of .83v for starting (that would be about 500 psi). At key on, you should get a .25v to .4v signal. Operational range for the sensor is .65v to 3.25v. Some approximate pressures compared to voltage signal would be:
500psi = about .85-.87v
1000psi = about 1.4v
1800psi = about 2.3v
2400psi = about 3v
3000psi = about 3.8v
The sensor screws in, so you can't depend on orientation of the sensor for the pin locations. But you did find Vref where you read the 5V.
If you hold the ICP connector looking into it with the latch on top, the left pin is Vref, center is ICP signal, and right is Signal return. The corresponding wire colors should be brown/white, dark blue/light green, and grey/red.
