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Author: Subject: Diff sounds like a fuel pump?
bassett

posted on 3/6/16 at 12:14 PM Reply With Quote
Diff sounds like a fuel pump?

Hi All, first few drives of my r1 engined mnr this year were all going well until I noticed the diff sounds like a fuel pump whirring at low speeds. Any ideas on what this could be and any ways to diagnose the fault, or is this a certain sign of a rebuild and I should stop driving it?
Thanks in advance
Adam





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CosKev3

posted on 3/6/16 at 01:49 PM Reply With Quote
Check the oil level is the easiest thing to do first!
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rusty nuts

posted on 3/6/16 at 05:33 PM Reply With Quote
My diff has had a very slight hiss since I built the car, it's got no worse in 10 years
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David Jenkins

posted on 3/6/16 at 08:40 PM Reply With Quote
The first time I drove my car without ear protection I thought my diff was about to pack up! In the original Escort the diff was separated from the driver by the body shell, plus all the carpet, seating and sound-proofing, but without all that in the way I was hearing the gears whirring in all their glory.

It's been like that for 10 years - I've got used to it...





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Hodor

posted on 4/6/16 at 09:32 AM Reply With Quote
Funny how relevant posts pop up.

I had my daughter out for a run the other day and killed the ignition whilst free wheeling down a slope so i could talk to her. Thought my fuel pump was still running behind me. Checked I'd switched off and realised it was the diff. Wondered if it was a problem but figured it's always been like that, i just thought it was the pump.

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bassett

posted on 4/6/16 at 10:16 AM Reply With Quote
Thanks for the thoughts all. I'm only concerned as it was never there before. It's definitely a whirring slight hissing kind of sound. Will try an oil top up first and see where I get to.





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turbodisplay

posted on 4/6/16 at 11:34 AM Reply With Quote
When I solidly mounted my celica rear diff it whinned really bad. Before the worn rubber mount made no noise.
So rubber mounting the diff will stop the noise to an extent.

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