Hi, I'm in need of some electrical help for the rev counter and water temp gauge..

Firstly the car was/is a 2000, 1.7 that I've swapped with a Focus RS engine running on Omex 600 management.

The rev counter signal is taken from one side of the coil pack. This is enough to make an off the shelf, 2 cylinder tacho, work. When I hook it up the puma clocks it doesn't work too well and the needle flickers on idle, and flickers badly when you rev the car and drive it. Put my foot down the needle just goes straight to 7,000!

What I need to know is what electrical component do I need to stick in line to smooth the signal?? Do I need a voltage reducer? I've tried a transient voltage suppressor, which only made it a little worse if anything.

As for the coolant temp gauge, I can't seem to get this to do anything.. I know that one side of the sensor must earth? the other goes to the ECU, then 1 wire from that to the clocks. The Puma ECU has been removed completely... (to tidy it all up)

If anyone can shed some light, I'd really appreciate it!

Thanks,

Ben

 

Hi I would just check that there is not a temp output from the omex ecu as the clocks on the ford gets its signal from the ecu i think. As for the tacho you may need to have the signal checked with an oscilliscope to check there is the correct signal.

 

Thanks for the reply - I'm pretty sure the tacho signal needs some sort of suppressor to make it work properly. The signal is making it read correctly, it just flickers. On the other hand, omex has a tacho output that may work, although the pin is missing from the plug.. might be able to get one from omex

As there's no haynes for a 1.7 puma, trying to wire this temp gauge is proving difficult. You're right in that the ecu puts out to the clocks. There must be a way of making it work. Omex doesn't output a signal.

 

Don't know if it helps or not but don't forget the focus RS doesn't have a temperature gauge as standard. You may need to fit another sensor?

 

Yea I've got the puma sensor in there, just don't know how to get it to work with the gauge

 

Hi mate, sorry i cant help.

Glad to see your engine lives on in a new car - although i was sad to hear the Ka was stripped.

You go ta build thread going on anywhere?

 

For future reference.. variable tacho output from omex makes the puma rev counter work perfectly

Still none the wiser on the temperature gauge!