davidyavidy Posted December 2, 2014 Share Posted December 2, 2014 I helped a neighbor install a new control valve recently, but the vehicle seems to have very little assist. I checked pump pressure at the pump - it was 50-75 psi at idle, 275-300 while attempting to turn the steering wheel. I didn't go full lock to see what that pressure was as my gauge is meant for automatic transmissions and only goes to 300 psi. I called a local rebuilder who said pressures should be in the 600+ psi range. Does anyone know what the pressures for this vehicle should be? It has a 289 w/automatic if that makes any difference. Thanks for any help.Dave Link to comment Share on other sites More sharing options...
Dennis Posted December 11, 2014 Share Posted December 11, 2014 The Shop Manual for 62 Ford Fairlane 500 that I have shows the pressure should be 750--900 psi. I also checked my Glen's 1965 Auto Repair Manual it shows the pressure should be 800--1000 psi. Also my Ford Manual says to allow at least two minuets for the fluid to warm up. If pressure using a testing tool with the shutoff valve fully closed if the pressure is still less than 750 psi the pump is causing the problem. If the pressure increases to 750--900 psi the problem is either the control valve or power cylinder. The Fairlane uses a hydraulic cylinder to move the front end assembly for turning, I do not know if the Mustang uses the same system or not. I hope this helps. Dennis Link to comment Share on other sites More sharing options...
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