No power steering unless rev engine Stock LS1 power steering pump with aftermarket Al reservoir. . New/reman gen 3 power steering box 2.5 turn. When the car is idling, I have no power assist. If I rev the engine to ~2000 RPM, I have assist. Any thought where to start? |
Is the belt tight? Hose kinked? Filled with fluid to the fill line on the dipstick tube? It absolutely would not be the first time a remanufactured power steering pump was bad fresh out of the box. Rick |
When u rev it does it feel like it should feel, or does it simply feel better... |
Belts are tight, do not see any kinks, it’s full to the top. It it feels like there is no assist until I rev the motor. |
Willing to bet the housing is worn of your nice new reman pump. I would recommend buying a brand new pump, no reman |
The steering gear or Pump? the steering gear was reman, the pump is the stock LS1 with ~70k on it |
did you bleed the air out?> jack it up (wheels need to be off the ground) and slowy turn it lock to lock several times, check fluid levels while doing this. |
I’ll give that a try. Thanks. |
The pump, I recently learned the bore inside our pumps wears and will begin to lose pressure. If the pumps aren't tested after they rebuild them, they will be sellling you a bad pump again |
Originally Posted by Floorman279
(Post 20061947)
The pump, I recently learned the bore inside our pumps wears and will begin to lose pressure. If the pumps aren't tested after they rebuild them, they will be sellling you a bad pump again you can see pics of all in the PS rebuild sticky on top |
With pressure only at high RPM, I like Jwooky's suggestion to check the belts first. If they are good and have tension, then my next guess would be a stuck-open pressure relief valve. (in the pump) This could be allowing pressure to bleed off continually. The solution is the same as a worn pump - time for a rebuild. |
The pump was not rebuilt, it is the stock pump with 70k on it. They are not known to fail that low miles are they? |
Originally Posted by Jwooky
(Post 20062312)
The pump was not rebuilt, it is the stock pump with 70k on it. They are not known to fail that low miles are they? |
Originally Posted by Jwooky
(Post 20062312)
They are not known to fail that low miles are they? Your pump may be perfectly fine, but if that relief valve (located in the pump body) is open, you might as well be driving a car with manual steering. |
Originally Posted by wssix99
(Post 20062749)
The pump is not known to fail this quickly, but the fluid is... If that stuff gums up and the pressure relief valve doesn't shut all the way, you will see pressure bleed off at the low RPMs - particularly where you need all the pressure you can get. Your pump may be perfectly fine, but if that relief valve (located in the pump body) is open, you might as well be driving a car with manual steering. |
only thing I can think of is to remove it and clean it....easy to do |
Originally Posted by sjsingle1
(Post 20063265)
only thing I can think of is to remove it and clean it....easy to do For all that effort, I'd just remove the pump, send it off to Turn One, and have a quality rebuild back in-hand the following week to give you a good bit of certainty for the next 100K miles. (You can also do the pulley upgrade while you are at it.) |
Originally Posted by wssix99
(Post 20063297)
+1. You could take the pump off, drain the fluid, inspect the valve, possibly replace it, replace the pump, replace the fluid, bleed the system, etc. but then you'd be left with a lot of effort, a big mess, and a pump with 1/2-3/4 of it's life gone. For all that effort, I'd just remove the pump, send it off to Turn One, and have a quality rebuild back in-hand the following week to give you a good bit of certainty for the next 100K miles. (You can also do the pulley upgrade while you are at it.) |
floorman.....which bore ?? |
The main bore, like since it's a pump inside there is a rotating gear like thing. Power steering fluid doesn't lubricate as well as engine oil so u still have 70,000 miles of not the greatest lubrication of a metal on metal contact. It's not bad lubrication just not as good as engine oil. A new high performance pump from turn one is 350 without pulley or reservoir. It's a little steep in my opinion but I still did it in hopes of freeing up 2 or 3 horsepower (I liked the idea behind the increased stiffness and pressure changes so I justify it by saying I'm spending 150 more than I think I should for 3 to, so 50 bucks per hp, not a terrible cost). But summit sells a new pump by tuff stuff, Its under 150. I would try that if u wanted to keep a stockish pump |
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