Fuel economy gauge flickering?

[Guest]

The Fuel economy gauge has started flickering, It still works but seems ultra sensative now.
Any ideas or where its pickup wiring block is located so I can check the connection etc...

 

[chrisdenton]

I had a similar problem and found this useful courtessy of Clarks garage.

http://www.clarks-garage.com/pdf-manual/elect-13.pdf

Mine was due to water getting into the fuel sender. it was OK once it dried out

 

[944Turbo]

Is there some confusion here, the fuel guage works off the fuel sender, The economy guage is a vacuum guage so I would imagine it has a sender on the inlet manifold, or a vacuum pipe down to the ecu like the turbo boost guage - except it goes to the klr box which an na car doesnt have.
Tony

 

[Fen]

Not knowing if it was electric or mechanical was the reason I didn't post anything. If it's flickering that would suggest it's electric I guess. I've never had a 944 with one so I have no idea how they work really.

 

[eastendr]

Figure is calculated by injector duration against speed, so not a traditional vacuum gauge.

It's run electronically by the DME so check the 3 multiway conectors that conect to the back of instrument panel. Maybe a 'wiggle' will cure it.

HTH

Rick.

 

[944Turbo]

thanks Rick, everydays a schoolday

 

[John Sims]

ORIGINAL: 944Turbo

thanks Rick, everydays a schoolday

So true. I thought it was a vacuum gauge as well. But as Rick has one on Baby Wuf (and knows about such things) he must know what he is talking about.

 

[chrisdenton]

ORIGINAL: 944Turbo

Is there some confusion here, the fuel guage works off the fuel sender, The economy guage is a vacuum guage so I would imagine it has a sender on the inlet manifold, or a vacuum pipe down to the ecu like the turbo boost guage - except it goes to the klr box which an na car doesnt have.
Tony

Quite right Tony, I must pay more attention[&:]