Power steering issues cant resolve
#1
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Power steering issues cant resolve
'93 4Runner 4x4 and the power steering works fine
during normal driving down the road. However, when I take my
foot off the gas to turn, reverse out of or turn into a parking
space, etc., the power steering stops working and I have to use
all my might to turn the vehicle. If you give it a little gas, it
seems to work better. Therefore, the power steering
effectiveness appears to be correlated with how much on the gas
pedal I am. Any ideas what could be the cause of this and a
possible remedy? It's pretty annoying. Thanks.
during normal driving down the road. However, when I take my
foot off the gas to turn, reverse out of or turn into a parking
space, etc., the power steering stops working and I have to use
all my might to turn the vehicle. If you give it a little gas, it
seems to work better. Therefore, the power steering
effectiveness appears to be correlated with how much on the gas
pedal I am. Any ideas what could be the cause of this and a
possible remedy? It's pretty annoying. Thanks.
#3
Registered User
The power steering pump is belt driven and it's speed is directly proportional to engine speed. At idle (when you let up on the gas) the pump may not be producing enough pressure. The pump could have an internal leak in an o-ring or may be worn out. There is also an idle-up valve on the pump that increases the engine speed a little when the demand is high with the engine speed low. Could be stuck closed.
If it works well at higher rpm's but not in idle, I would suspect the pump.
If it works well at higher rpm's but not in idle, I would suspect the pump.
#6
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Does the system have the generic "power steering fluid" from the auto parts store (which it should not) or "Dexron" fluid (which it should) in it?
Last edited by abecedarian; 04-01-2010 at 07:55 AM.
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#9
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Have you verified that the valve on top of the pump is passing vacuum to the idle up valve? Both the valve must work as well as the hoses and fittings must be car to pass vacuum to the idle up control. That is the system that bumps up the idle speed when you need steering boost. You can also turn up the knob atop the idle up valve to speed up that fast idle if needed.
Last edited by 4Crawler; 04-01-2010 at 01:34 PM.
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