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v8 ecu and tacho 


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 Post subject: v8 ecu and tacho
Posted: Sun Dec 21, 2014 7:56 pm 
Parts Gopher

Posts: 61

Joined: 19th Jun 2011

Gallery: 1 images

Ride: fairlane ute

Location: wodonga
VIC, Australia

Hi all
Have a 5 litre into my xf running manual gearbox and using the existing auto ecu. Have connected a neutral gear switch and clutch swith instead of tranny controller. From what i can tell the ecu doesnt have a tacho signal input? I haver a fault code "lost tacho signal" or "spout grounded". The spout isnt grounded and the only tacho wiring i can see is from coil to tfi module and cluster. Any ideas? maybe an intermittent tfi module or suspect coil.
 Post subject: Re: v8 ecu and tacho
Posted: Tue Dec 23, 2014 7:21 pm 
Getting Side Ways

Posts: 698

Joined: 1st Jan 2006

Ride: Lots, all Fords

Location: Hamilton
New Zealand

Tach signal is called IDM and connects to the ecu via a 22k resistor.

Without a manual ecu or chip with manual code you are also missing out on a bunch of HP since the TID signal is no longer being fed to the ecu.

Get a manual chip with forced neutral state, then you don't need to worry about clutch switches at all.



XA Faimont 351C, AU2 XR8 Manual 5.0, DA LTD 5.0, Mk1 Capri 5.0, 1995 Mustang 5.0, EF2 XR8 Manual, EF2 Fairmont Ghia 5.0, AU3 XR8 Auto, AU2 XR8 Auto, AU2 XR8 Manual Ute, TE Cortina 5.0 Manual, DU LTD 5.0 soon to be manual

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