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Generation 4-4 Pajero NX model 2014 -

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Old 1 Week Ago
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Default Electric motor/pump sound when acc/decelerating???

Not sure if it's normal or not, but getting an electric motor/pump sound when accelerating and decelerating. Audible at low speeds (20km/hr). The sound is similar to an electric arial going up and down.
Never had it in the NP but the NX is auto and has a lot more electronics (no DPF).
Vehicle runs fine.

Last edited by Benduro; 1 Week Ago at 08:30 PM.
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Quote:
Originally Posted by Benduro View Post
Not sure if it's normal or not, but getting an electric motor/pump sound when accelerating and decelerating. Audible at low speeds (20km/hr). The sound is similar to an electric arial going up and down.
Never had it in the NP but the NX is auto and has a lot more electronics (no DPF).
Vehicle runs fine.

If it is a whistle type sound then that is your VGT turbo.
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don't think its the vgt.
Present on start-up and just after/during breaking.
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BruceandBobbi BruceandBobbi is offline
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Originally Posted by Benduro View Post
don't think its the vgt.
Present on start-up and just after/during breaking.

Sounds like the small electric motor on the brake master cylinder running. Could be the accumulator not holding pressure.

If it is for your sake I hope you are still under warranty.
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Yep, under warranty. Will get it looked at asap. Expensive I take it???
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BruceandBobbi BruceandBobbi is offline
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Yep, under warranty. Will get it looked at asap. Expensive I take it???

https://www2.pajeroclub.com.au/forum...7&postcount=77
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benckj benckj is offline
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Don't leave it long to get HBB brake unit checked out. Soon after showing symptoms it will fail. Most likely cause is a worn electrical motor communtator. Can't buy a replacement so it must either be repaired or whole HBB unit replaced ($$$). I would not accept a second hand unit as its condition is unknown.

jim
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BruceandBobbi BruceandBobbi is offline
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Don't leave it long to get HBB brake unit checked out. Soon after showing symptoms it will fail. Most likely cause is a worn electrical motor communtator. Can't buy a replacement so it must either be repaired or whole HBB unit replaced ($$$). I would not accept a second hand unit as its condition is unknown.

jim

Not necessarily the motor. Ours was the accumulator. Lucky we kept the old unit that was by passing when we had the new complete unit replaced. Still have it in the shed.
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