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Thread: EHPS Pump very noisy

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    Default EHPS Pump very noisy

    Hi Everyone,

    Im Alan and I drive a 2003 Signum 2.2 Direct, I have a problem with the EHPS on the car, originally the pump suddenly became really noisy when the steering was turned, the steering felt as normal, I checked the fluid level and it was fine, went to the local dealer and they advised that the pump needed changing, I bought a second hand pump and installed it as per the instructions on TIS2000, bled the system and the second hand pump made just as much noise as the old one. Bought another second hand one and installed it yesterday, bled system and this one makes just as much noise, Is there something im doing wrong? The steering is as light as it should be, is it that im really unlucky and have bought 2 knackered pumps, or do I need to do something else for the pump to be as quiet as it was before the original one packed up. By the way its the pump that sits under the o/s light. Any help with this issue will be much appreciated as its getting very irritating now.

    Thanks, Alan

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    What kind of noise is it? Are you sure there are no problems with the steering in general that maybe causing to much load on the pump?

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    Its a loud whineing noise, like the sound a pump makes when it has no fluid in, gets louder when the steering is turned, but when the engine is idle you can hear the pump whineing, the steering is fine to turn.

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    I have just unplugged the Angle Sensor on the rack and the pump is a lot quieter, get the steering wheel icon on the dash, which is expected, does this mean it needs replacing or just re-configuring does anyone know?

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    Still got a problem with my steering, I managed to find that the inlet pipe was bent and was restricting the fluid in the system, had the pipe repaired and the steering was fine, no noise at all, turned car off and back on about half hour later and the noise was back, but now when steering is on full lock the pump makes a loud sucking noise and goes quiet and the steering wheel kicks back. Can anyone give me some advice as what to check and change now.

    Thanks, Alan

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