Sensitive Power Steering [solution?]
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Joined: Feb 2016
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From: Pleasureville, KY
Sensitive Power Steering [solution?]
My truck is a 1991 F150 with a Bendix C-300N P.S. Gearbox.
It seems to need a Power Steering pressure Relief valve adjustment.
The steering is too sensative, even unintentional pressure on the steering wheel changes the direction of the vehicle. A new steering box did remove the 4- 6 inch dead spot in the steering wheel which has improved the situation beyond belief- speeds exceeding 55 mph have been attained!! Previous improvements: PS Box, pump & lines, ball joints, shocks.
The Service manual states the Power Steering Pressure Relief Valve is adjustable; by the shim pack that loads the valve. To improve the steering will removing shims in the relief valve assembly lower the bypass pressure; require more force/ and in turn desensitize the steering ?
It seems to need a Power Steering pressure Relief valve adjustment.
The steering is too sensative, even unintentional pressure on the steering wheel changes the direction of the vehicle. A new steering box did remove the 4- 6 inch dead spot in the steering wheel which has improved the situation beyond belief- speeds exceeding 55 mph have been attained!! Previous improvements: PS Box, pump & lines, ball joints, shocks.
The Service manual states the Power Steering Pressure Relief Valve is adjustable; by the shim pack that loads the valve. To improve the steering will removing shims in the relief valve assembly lower the bypass pressure; require more force/ and in turn desensitize the steering ?
Lead Driver
Joined: Jan 2003
Posts: 9,893
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From: Ohio
I've complained about "hyper sensitive" steering about my 89 and my current 95. Like it was made to be steered by a 3 year old? It takes so little effort it is hard to keep steady sometimes.
I've wondered if lowering the pump pressure would increase the heaviness and make it a bit more stable. Both my trucks have tight suspensions, nothing worn out.
I've wondered if lowering the pump pressure would increase the heaviness and make it a bit more stable. Both my trucks have tight suspensions, nothing worn out.
Thread Starter
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New User
Joined: Feb 2016
Posts: 17
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From: Pleasureville, KY
I've complained about "hyper sensitive" steering about my 89 and my current 95. Like it was made to be steered by a 3 year old? It takes so little effort it is hard to keep steady sometimes.
I've wondered if lowering the pump pressure would increase the heaviness and make it a bit more stable. Both my trucks have tight suspensions, nothing worn out.
I've wondered if lowering the pump pressure would increase the heaviness and make it a bit more stable. Both my trucks have tight suspensions, nothing worn out.
FYI- the adjustment would be to allow more of the pump's pressure to bypass the steering box - back to the pump resevoir
Last edited by KYSlowhand; Nov 22, 2016 at 11:39 PM. Reason: Info
Thread Starter
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New User
Joined: Feb 2016
Posts: 17
Likes: 0
From: Pleasureville, KY
Getting better
I've complained about "hyper sensitive" steering about my 89 and my current 95. Like it was made to be steered by a 3 year old? It takes so little effort it is hard to keep steady sometimes.
I've wondered if lowering the pump pressure would increase the heaviness and make it a bit more stable. Both my trucks have tight suspensions, nothing worn out.
I've wondered if lowering the pump pressure would increase the heaviness and make it a bit more stable. Both my trucks have tight suspensions, nothing worn out.
Modifying your Power Steering Pump - GM Truck Central
Borgeson; Mullens; and maybe some other's make kits to adjust the Saginaw pump pretty cheap and adjustable.
Look at :
https://www.summitracing.com/search/part-type/power-steering-pump-pressure-regulator-kits?ibanner=SREPD1
Last edited by KYSlowhand; Nov 25, 2016 at 05:21 AM. Reason: INFO
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