Pre Cat Dash Instruments

[Green Meanie]

Does anyone know who was the manufacturer of the Black faced Pre-Cat dashboard instruments,can they still be replaced or refurbished.Any info gratefully recieved

Thanks

[AntonyJ]

Green Meanie said:

Does anyone know who was the manufacturer of the Black faced Pre-Cat dashboard instruments,can they still be replaced or refurbished.Any info gratefully recieved

Thanks

Stewart Warner were the original manufacturer, although they still exist , they dont have anything to do with these dials.

What problems do you have?

Edited by AntonyJ on Wednesday 20th August 11:42

[Green Meanie]

Very erattic speedo but only at certain speeds 30 to 40 , 30 ok and steady.But between 30 and 40 flicks between 30 and 50ish ,ok at45 plus.But does the same thing between 60 and 70,70 and upwards ok.

hope this makes sense,

Edited by Green Meanie on Wednesday 20th August 12:52

[The AJP Griff]

Might be worth a try changing the transducer,first?

[AntonyJ]

As Mike says it may be worth checking the transducer, there are two types though.
One gives 4 pulses per revolution and the other 8.
Its exhaust off job to change it on a precat.

Might be worth picking up the input from the speedo and checking it with a handheld scope.


If its not the transducer, then the chances are that the IC in the speedo is failing.
I sent mine to Speedy cables, but they said they couldnt repair it as they couldnt get the IC.
I took it to a local industrial electronics place who got hold of the IC and replaced it for me, FOR FREE!

Will try and remember the number of the IC. Sure its a common one, just a count function.

[LordGrover]

[dumbass]What's an IC?[/dumbass]

[AntonyJ]

Integrated circuit or "chip"

In the speedo it counts the pulses and controls the needle.

[Ballistic Banana]

You can roughly check the tranducer with a multimeter to see if you are getting difflection at evreypulse. In the bible it shows what ecu connections you can check at or you can (if you have one) undo the connector under the transmission tunnel,or straight on the transducer wires although harder to get to them... The wheels will need to be up and you will need to get someone to turn them so you can read the multimeter.

BB

[Green Meanie]

Thanks Guys

I will check the transducer as you suggested,hope this solves the problem looks like it out with the trolley jack and axle stands again.

[AntonyJ]

Found the thread I posted when I got mine fixed,

http://www.pistonheads.com/gassing/topic.asp?h=0&a...

The IC in the speedo is mentioned.

[Green Meanie]

Thanks Antony J

Just made a mental note (on a piece of paper)of the IC number

Cheers

Green Meanie

[V8 Animal]

Green Meanie said:

Does anyone know who was the manufacturer of the Black faced Pre-Cat dashboard instruments,can they still be replaced or refurbished.Any info gratefully recieved

Thanks

This may interest you
http://www.pistonheads.co.uk/sales/671752.htm

[Barreti]

V8 Animal said:

Green Meanie said:

Does anyone know who was the manufacturer of the Black faced Pre-Cat dashboard instruments,can they still be replaced or refurbished.Any info gratefully recieved

Thanks

This may interest you
http://www.pistonheads.co.uk/sales/671752.htm

Christ on a bike but they're ugly. Is that what you non-pre-cat guys have to put up with.
Hell, you have my deepest sympathy chaps

[AntonyJ]

Barreti said:

V8 Animal said:

Green Meanie said:

Does anyone know who was the manufacturer of the Black faced Pre-Cat dashboard instruments,can they still be replaced or refurbished.Any info gratefully recieved

Thanks

This may interest you
http://www.pistonheads.co.uk/sales/671752.htm

Christ on a bike but they're ugly. Is that what you non-pre-cat guys have to put up with.
Hell, you have my deepest sympathy chaps