speed hut guages not working

[LuckyWinner]

So, temp gauge....working, water temp.....working, volt gauge....working, fuel gauge working....,

Oil pressure gauge tacks out as soon as turned on. Not sure what that might be. I broke the sensor that came with the kit, it had a positive and negative terminal. The one I have on now just has one terminal that I have attached a power wire too and the gauge on the dash is grounded. Any thoughts?

Speedo gauge, not working at all. has power, lights turning on but not moving. I have tried both spots on the trans to plug in the wires that go to the speedo, but nothing. :confused:

[Davidbr_48]

I had the same problem with the speedo. I took it to my neighborhood car repair shop run by a fellow Roadster builder, and he corrected the wiring and the gauge works fine now. Something to do with the ground, I believe.

Davidbr / Tucson

[edwardb]

Oil pressure: Speedhut is a bit different having the signal and ground at the sending unit, e.g. 2-wire. Not sure the ground at the gauge itself is sufficient. Have you tried attaching the ground wire at the sensor end to a known ground on the engine or chassis? At least with a clip lead to see if that makes it work? Personally, I would get the proper sending unit from Speedhut. Not expensive, known to work, and some recourse with them to troubleshoot if needed.

Speedo: There are four sensors on the TKO600: Neutral, backup and two speed. The speed sensors are right around the shift lever, one on the PS and one on the DS. The DS one takes an external sensor to be installed. Do you have one installed? (If not, it needs a metal plug BTW. Not just the rubber shipping plug it came with.) The one on the PS is the built-in speed sensor and is the one easiest to use with the Speedhut gauges and Ron Francis harness. It should plug right in. It needs to be calibrated, but you should get at least some needle deflection immediately.

[LuckyWinner]

I plugged it into both, the PS and the DS sensor, but no needle movement at all. It is ground. How do you calibrate?

[edwardb]

I plugged it into both, the PS and the DS sensor, but no needle movement at all. It is ground. How do you calibrate?

Hopefully not too stupid of a question, but "no needle movement" you do mean while the rear wheels are turning, e.g. up on stands or driving? Don't mean to insult with a dumb question, but just want to make sure.

Calibration is described in the Speedhut directions. Basically you drive a measured course with the speedo in calibration mode and it adjusts the internal setting so it registers the correct speed. BTW, assume the speedo is receiving power and you see characters in the display? When you push the button it should toggle to the trip odometer, etc. If this screen is dark you're still not getting power to the speedo.

One other thing. Just to confirm. This post from the other forum shows the electrical connectors on a TKO. The center one on the DS is one speed sensor. There is another one on the PS side in nearly the same place. One of this is what you're using? http://www.ffcars.com/forums/21-ffr-type-65-coupe/296443-i-need-find-reverse-switch.html#post2710282

[Jeff Kleiner]

Oil pressure---You must use the Speedhut 2 wire sender.

Speedometer---You will not see any needle movement until you perform the 2 mile calibration procedure as detailed here:

http://www.speedhut.com/instructions/4_and_338_inch_speedhut_instructions.pdf

Jeff

[LuckyWinner]

Oil pressure---You must use the Speedhut 2 wire sender.

Speedometer---You will not see any needle movement until you perform the 2 mile calibration procedure as detailed here:

http://www.speedhut.com/instructions/4_and_338_inch_speedhut_instructions.pdf

Jeff

Jeff, would this one work???? JEGS Performance Products 41365

[Jeff Kleiner]

Jeff, would this one work???? JEGS Performance Products 41365

I have no idea...but I know that the Speedhut one will. Why ya' trying to reinvent the wheel?

Jeff

[edwardb]

Jeff, would this one work???? JEGS Performance Products 41365

The replacement part at Speedhut lists the technical specs. As long as the same as this, probably would work. Or maybe just buy from them? http://www.speedhut.com/ecommerce/product/603/Speedhut-Oil-0-100-psi-pressure-sender


Speedometer---You will not see any needle movement until you perform the 2 mile calibration procedure... Jeff

This hasn't been my experience, so I will disagree very carefully :o The Speedhut gauges in my Mk4, with the PS sender in the TKO600, has not been calibrated and does show needle deflection. Observed during first starts and running while on jack stands, and then again during go-kart drives. I have no idea if it's right until calibrated, but it's showing 20-25 MPH when shifting from first to second during my go-kart runs, so it's somewhere in the ball park. Apparently the electronic speed sensor in the TKO is close enough to the default value in the Speedhut to give some amount of speedo needle movement. The needle also bumps a bit when the key is turned on and it gets power like most of the gauges.

[Jeff Kleiner]

...This hasn't been my experience, so I will disagree very carefully :o The Speedhut gauges in my Mk4, with the PS sender in the TKO600, has not been calibrated and does show needle deflection. Observed during first starts and running while on jack stands, and then again during go-kart drives. I have no idea if it's right until calibrated, but it's showing 20-25 MPH when shifting from first to second during my go-kart runs, so it's somewhere in the ball park. Apparently the electronic speed sensor in the TKO is close enough to the default value in the Speedhut to give some amount of speedo needle movement. The needle also bumps a bit when the key is turned on and it gets power like most of the gauges.

Interesting...and probably a valid hypothesis. I've done 3 builds with Speedhuts, all T5s with OEM Ford senders. Nothing but the initial power on blip from any prior to calibration.

Jeff

[LuckyWinner]

I know that Mike sells the plastic gears for the trans to speedo. I am using the one that came with the kit. Maybe its not the right one? Maybe the one that comes with the kit doesn't work with a tko600?

[edwardb]

I know that Mike sells the plastic gears for the trans to speedo. I am using the one that came with the kit. Maybe its not the right one? Maybe the one that comes with the kit doesn't work with a tko600?

There's really no reason to mess with the external VSS on the TKO unless you're running a mechanical speedo IMO. The VSS is included with the complete kit because that's the only sensor output available when using a T-5, a very common choice for these builds. But with your TKO you have an internal electronic speed control built into the transmission. The plug is on the passenger side, and your Ron Francis harness plugs directly into it. As mentioned in previous responses, this is the exact setup I have and it works. Anthing's possible, but if you plug the RF harness into this sensor you probably need to look elsewhere. I don't think the sensor itself is the problem.

Asked earlier, is the display window in your speedo lighting up? It should show some numbers (regular and trip odometers) and change to other screens with the pushbutton. Is this working? If not, your speedo isn't powering up properly. Also, there's the other end of the two wires from the speed sensor and how they're wired behind the dash. One goes to the speedo the other to ground. I've seen reports where the ground wire wasn't connected. It's not real clear in the instructions.

[LuckyWinner]

Ok, i will plug into PS, yes all is lighting up, trip meter and when i use the pushbutton, it does change to the other setings, the needle just doesnt move. I guess i can just wait to try the "two mile calibration" method and hope it works. It is all wired and ground.