Non running 993, noisy fuel pump

[gareth h]

Advice from the knowledgable please, my 993 had to be recovered home a few days ago, was overtaking a line of traffic on a 3 lane road, thought I’d hit the Rev limiter and realised the engine had stopped, it now won’t restart but after cranking and with the ignition on I’m getting this noise from around the fuel tank, I’m assuming knackered fuel pump?

https://youtu.be/0ekKRttMmgA?si=iiLkP5C0pnhJ8xTl

[ImbackYo]

My fuel pump made the same noise when my filter was blocked (new tank). It was working overtime to try and pump fuel. In the end it gave up.

[ImbackYo]

Or could be a relay.

[Orangecurry]

ImbackYo said:

Or could be a relay.

This. Start simple. How old is your DME relay? Which version is it?

[gareth h]

ImbackYo said:

My fuel pump made the same noise when my filter was blocked (new tank). It was working overtime to try and pump fuel. In the end it gave up.

Thanks, I’ll check the filter

[gareth h]

Orangecurry said:

ImbackYo said:

Or could be a relay.

This. Start simple. How old is your DME relay? Which version is it?

Thanks, It’s not the relay, that was the first thing I checked

[Orangecurry]

Not trying to be a smartarse... but how did you check it?

[gareth h]

Orangecurry said:

Not trying to be a smartarse... but how did you check it?

Bought a new one (money no object ), just pulled the fuel pump fuse and the noise stops, so def the pump, just a bit unsure if something else is causing it to run badly.

[Orangecurry]

....just from experience, new ones can also not work, as the solder joints dry out over time, and I doubt your new one was manufactured recently. Obviously your issue may well not be the DME.

My car originally had the 944 part number relay, which eventually failed, so I replaced it with the superseded 993 part, which failed much sooner.

If the car is a keeper, I would buy the modern solid-state relay, made by ftech9. I've had one of these in the car for about three years.

https://www.ftech9.com/new-products/993-ssr