low brake pressure light on - TheDieselGarage.com
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post #1 of 4 (permalink) Old 07-16-2009, 06:26 PM Thread Starter
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low brake pressure light on

I have a 05 International 4300 and the low brake pressure light has come on and the electric brake boost motor is running all the time. I know this system runs off the power steering pump and we have had no problems with the power steering whatsoever. We unplugged the sensor for the brake pressure and it seems to brake fine we just dont have the electric motor running when you apply the brakes when and if the truck stalls. Could the sensor but the problem?
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post #2 of 4 (permalink) Old 07-25-2009, 05:19 AM Thread Starter
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No one has any ideas or suggestions..............wow
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post #3 of 4 (permalink) Old 07-26-2009, 01:59 AM
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have you tried replacing the sensor? i'm not sure what the spec is but you might test the pressure and flow rate that the p/s pump is producing to see if it's doing its job. if you called your local IH dealership they should be able to look it up for you.

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post #4 of 4 (permalink) Old 02-20-2014, 09:49 PM
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got the one on the mater cylinder and the relay ordered the one on the booster
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