Diesel Bombers - RASB Valve

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- - RASB Valve (https://www.dieselbombers.com/ford-83-94-6-9-7-3l-general/42693-rasb-valve.html)

rwgentry

02-06-2010 09:14 PM

RASB Valve

Does anyone know where the RASB valve is on 89 f250 7.3 is. Would it be the cause of the brake pedal going all the way to the floor after holding it. I can push on the brakes and they are good then gradually start to fade?

hillbilly cadi

02-06-2010 09:54 PM

It's on the drivers side frame rail, directly under the brake master cyclinder. I have an 88 f250 that has the same problem. Only my " rear antl lock" light comes on on the dash.

rwgentry

02-07-2010 09:44 PM

do I need to just replace it or can it be cleaned.

Thanks for your help

ArizonaRedneck

02-07-2010 10:10 PM

could be that your master cylinder is going bad but check this outits about the rabs on a ford ranger but it might still be able to help you More Ford Ranger RABS

rwgentry

02-08-2010 07:07 AM

Thank you for the info!

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