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Power Steering Pump Questions....

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Old May 7, 2011 | 04:40 PM
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Default Power Steering Pump Questions....

The other day, a really hot day, I was driving, for about an hour in town, and I began to make a left turn when I heard a grinding noise coming from the front end. This happened everytime I made a left turn...no noise when I turned right...just left. I thought is may have been the tire rubbing, but it wasn't. I did check the power steering pump level and the level was A LITTLE low (just below the "hot full" mark). I added some power steering fluid (about 3-4 oz) and it put the level about 1/2" above the "hot full" mark. The grinding noise never came back. Now the questions...

1) Does the grinding noise telling me the power steering pump is about to go south?

2) If not, has it been hurt?

3) Will the fluid level above the "full mark" hurt the pump?

4) Where did the fluid go? It's not leaking because there are no stains on the garage floor and the pump is dry along with all the connections (hoses, etc).

Any help will be greatly appreciated!
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Old May 7, 2011 | 06:16 PM
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Grinding noises are usually indicative of impending power steering failure, but in this case, it may have just come from the fluid level going low momentarily while turning.

It probably wasn't hurt, though.

Filling above the full mark may cause the fluid to overflow and create a mess, that's about the only risk.

The fluid may have been leaking out when you couldn't see it happen. When turning for example pressures are very high and some may leak out on the road.


I wouldn't sweat it too much. Even if the thing does go south a rebuilt pump costs less than $50 and takes only about an hour to change .
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Old May 7, 2011 | 08:10 PM
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If the pump is significantly wearing, it will make some noise no matter whether it is turned or straight. The noise when set 'straight' will be much less...but it will still make noise. When the pump is quiet at 'straight ahead' position and 'grinding' when turned, the pump is sucking air due to low oil level. It may be that the cap on your pump is not the one that came on it (got lost and someone bought a salvage yard cap...with a different level mark). If the pump does not get overly warm/hot from use with the amount of oil you now have in it....and it doesn't look all foamed up after driving and removing the cap, the level you now have is probably correct for that cap/dipstick. If you can find someone at a car show with the same year pump/cap, see if they will remove it to compare the dipstick marks. In any case, it should be fine with the "new" position on the stick.
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Old May 8, 2011 | 01:14 PM
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THANKS!
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Old May 8, 2011 | 01:45 PM
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And if the pump does fail, its not a big deal on a C3. The power is just an assist, and the steering works just fine without the power. When I bought my '79 the previous owner had removed the power steering belt years before because the pump had failed, and never bothered fixing it. Just continued to drive it with manual steering. So don't worry about it leaving you at the side of the road some night.
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Old May 8, 2011 | 02:10 PM
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Vette 75

You are able to remove your cap ? Mine hits the bottom of the alt. bracket and wont come out completely. Someone else with a 75 says he has the same issue.
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Old May 9, 2011 | 09:11 AM
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Originally Posted by BTGRN75
Vette 75

You are able to remove your cap ? Mine hits the bottom of the alt. bracket and wont come out completely. Someone else with a 75 says he has the same issue.

No, my cap hits the alternator bracket too. The alternator bracket, I installed 2 years ago, is an aftermarket bracket (March Performance)....like the way it fits, looks etc (it seems to be stronger than a stock bracket), so I had to jury-rig a "dip stick" to check my level....looking into getting another bracket, just a good looking and strong but still able to check the power steering unit level....any suggestions?
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Old May 9, 2011 | 09:22 AM
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Originally Posted by vetteguy75
No, my cap hits the alternator bracket too. The alternator bracket, I installed 2 years ago, is an aftermarket bracket (March Performance)....like the way it fits, looks etc (it seems to be stronger than a stock bracket), so I had to jury-rig a "dip stick" to check my level....looking into getting another bracket, just a good looking and strong but still able to check the power steering unit level....any suggestions?
No suggestions. I guess I'll add fluid (with a funnel),if it makes noise, and it that doesn't work, then I'll consider it on it's way out.
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Old May 9, 2011 | 09:44 AM
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Originally Posted by BTGRN75
No suggestions. I guess I'll add fluid (with a funnel),if it makes noise, and it that doesn't work, then I'll consider it on it's way out.
I use a turkey baster....works like a charm. I did have to duct tape the bulb to the plastic stem to form an air tight situation...so the baster won't drip when I turn it upside down to insert it into the pump.
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