Autometer egt problems - Ford Powerstroke Diesel Forum
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post #1 of 10 Old 10-23-2013, 02:41 PM Thread Starter
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Autometer egt problems

I've had my 99.5 f250 for almost a year now. I love it but I'm still trying to work out some kinks from the previous owner.

It came with autometer egt and boost gauges. The boost works just fine but the egt was doing some weird things. It would sometimes work on start up and hover around 250 degrees. Most of the time though the gauge was just stuck at 600 degrees. And when I did work at startup, as soon as I hit 600 it would be stuck again. This was in the downpipe. It is now tied up off to the side since I put a new exhaust on.
I want to put the probe in the manifold and should have time over winter break.

Anyway, I was looking under the dash today to fix my fog lights when I noticed that the orange wire coming from the gauge had been cut and a smaller wire was spliced in and ran to the plug in for the trailer brake controller. Could this be the source of my gauge issues? I can only guess that this was done so that the gauge would only work when a trailer is hooked up. I've found some interesting work on this truck before. The ground for the gauges was cut so that they would not light up. I hooked this back up and they both had light just fine. The other side of the orange wire looks like it runs into the engine compartment. Anyone seen this before? And does anyone know what the orange wire does for the egt?

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post #2 of 10 Old 10-23-2013, 02:51 PM
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I'd pull the gauges and (pillar?) mount and just re wire everything, a faulty electrical source can yield all kinds of problems.

DD- 11 6.7 scsb: sct4 gearhead tunes, 4" dpb axle dump exhaust, 2.5 level, fox shocks, no limit egr delete, no limit stage 2 intake, STT PRO 295/65r20, black fuel couplers

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post #3 of 10 Old 10-23-2013, 03:00 PM Thread Starter
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Yes it's a pillar mount. You really think a full pull and rewire is necessary? I don't know if I have that much time.

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post #4 of 10 Old 10-23-2013, 03:03 PM
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Would need to know what the orange wire was for...

It could be a key on power, it could be any number of things. The trailer brake power is on no matter if the trailer is hooked up or not, so its not something special there.

Sounds like a hack job. Best way to fix a hack job is to remove and rewire.

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post #5 of 10 Old 10-23-2013, 03:10 PM
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I spent a solid hour wiring in my quad gauge pod and then maybe 15 min drilling and tapping my egt probe.

DD- 11 6.7 scsb: sct4 gearhead tunes, 4" dpb axle dump exhaust, 2.5 level, fox shocks, no limit egr delete, no limit stage 2 intake, STT PRO 295/65r20, black fuel couplers

sold- 00 7.3 modded to the end.
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post #6 of 10 Old 10-23-2013, 03:10 PM Thread Starter
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I'll have to see if I can find a wiring schematic to see what the orange wire is.

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post #7 of 10 Old 10-23-2013, 03:16 PM Thread Starter
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Quote:
Originally Posted by heisman01 View Post
I spent a solid hour wiring in my quad gauge pod and then maybe 15 min drilling and tapping my egt probe.
That's good to hear. Maybe it won't take me so long then. I'm not the best with wiring so that's why I'd rather not have to take it all out, but if I have to that's what I plan on doing.

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post #8 of 10 Old 10-23-2013, 04:05 PM
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http://www.autometer.com/download_instruction/872.pdf

that should help you out.

When I installed mine I ran all the lighting with one main(white) wire and then all the power for the trans temp and egt with one wire (yellow) then took all the grounds from the lighting and trans/egt gauges to one wire (black). The senders I used a green wire for the trans temp and the egt came with the two sender wires. Just take your time and itll go together quickly.

DD- 11 6.7 scsb: sct4 gearhead tunes, 4" dpb axle dump exhaust, 2.5 level, fox shocks, no limit egr delete, no limit stage 2 intake, STT PRO 295/65r20, black fuel couplers

sold- 00 7.3 modded to the end.

Last edited by heisman01; 10-23-2013 at 04:10 PM.
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post #9 of 10 Old 10-24-2013, 09:24 AM Thread Starter
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Is it possible to just redo the egt wiring and not the boost. And Im pretty sure that the grounds all go to one wire but the lighting power are all seperate.
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post #10 of 10 Old 10-24-2013, 10:07 AM
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You could just redo the egt wires, since that's only one extra wire for the boost light. Not very convienent but you can if you want.

DD- 11 6.7 scsb: sct4 gearhead tunes, 4" dpb axle dump exhaust, 2.5 level, fox shocks, no limit egr delete, no limit stage 2 intake, STT PRO 295/65r20, black fuel couplers

sold- 00 7.3 modded to the end.
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