Electronic speedo cable repair

Topic: Electronic speedo cable repair (Read 2179 times) previous topic - next topic

Electronic speedo cable repair

Reply #15 – July 20, 2009, 10:08:23 AM

This helps me out on another project. I was building a soft mph adjustment box. I know you can buy them but I wanted to build one FOSS so everyone could give it a try. I never bothered to find out what the VSS Signal looked like though. I just assumed that it was detecting zero crossings. Maybe I will actually get off my hump and finish that project now.

Electronic speedo cable repair

Reply #16 – July 20, 2009, 10:42:19 AM

This is sort of going beyond the original thread topic (speedo cable repair, and I have another cable to repair, by the way), but I'm really intrigued by the thought of intercepting the LCD signals. It would be neat if we could toggle the odometer between things like:

Distance
RPM
Volts
Inside temp
Outside temp
Engine temp
Compass/heading in degrees

Can anyone think of any others?

Electronic speedo cable repair

Reply #17 – July 20, 2009, 10:49:21 AM

O2 Volts, TPS Volts, Injector Pulse width, boost. I might have to pull a cluster from the yard now. I always wanted to wire a Radar detector into my dash. Hide the sensor up high and wire the lights into the cluster for that "Oh no officer, I don't have a radar detector" look.

Electronic speedo cable repair

Reply #18 – July 20, 2009, 11:38:39 AM

It's sounding like there are some real possibilities here. Maybe we need to ping our resident electrical engineers

if we had something that had a simple CPU, memory-mapped I/O, was modular in the sense that we could add input sources at will, and had ease of software upgradability (flash card?) we could do a heck of a lot. Except for the programming aspect this is rapidly going beyond my expertise.

Electronic speedo cable repair

Reply #19 – July 20, 2009, 11:52:28 AM

I'll grab one next time I'm in 'da yard and see what I can do with it. If nothing else it would make a stoss clock for my office.

Electronic speedo cable repair

Reply #20 – July 20, 2009, 11:58:46 AM

I wonder if we could have it show EEC codes...

Electronic speedo cable repair

Reply #21 – August 21, 2009, 01:36:25 AM

Quote from: Quietleaf;282933

I wonder if we could have it show EEC codes...

You'd need something that spoke EEC-IVese to register the marker pulses and know what it's looking at. Something external that would capture the codes, store them, then show them one at a time. That would be extremely tricky.

I'm going to look into a mod to use one of the unused sockets to put a lamp in the dash and have it blink like the CEL on my F-150. It's either that, or build a box with LED's and some toggle switches to initiate the diagnostics and fuel pump test. I know EEC-IV readers are out there, but they're fiendishly expensive because there's so much variation in OBD-II standard between manufacturers and even models. I can count, so might as well just stick with the blinking light method.