SCT X4 Issue
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SCT X4 Issue
I am trying to load custom tunes onto my truck, and every time the device is “finalizing” the new tune, I get the error code 110D8. Now, on sct’s site, this means I have more than .5 volts of drop on my batteries (I have a 1.1v drop) or there is some other type of electrical issue. My problem is, how do I avoid the glow plugs coming on once the key is turned on (as they draw power) and the fuel pump turns on starting to prime the system with fuel. Now here’s a question, can I pull the plugs to the glow plug control module on the p.s. valve cover? This way they won’t be putting a draw on the batteries when I need voltage, or, could I pull a fuse/relay to the fuel pump? Why do I have a drastic power drop between key off and key on? And yes, it still does it when the truck is hot after it has ran and charged up the batteries.
Fleet Mechanic
Joined: Jul 2018
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From: Jacksonville Florida
Buy new batteries. Sorry to be blunt.
. These motors have a very sensitive system. Bad batteries can cause multiple problems. You can do more damage with bad batteries than you can do by taking a sledge hammer to your truck.
Have your batteries load tested.
. These motors have a very sensitive system. Bad batteries can cause multiple problems. You can do more damage with bad batteries than you can do by taking a sledge hammer to your truck.
Have your batteries load tested.
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I have 2 interstate batteries at 850cca new in April of ‘19. Do you think they went bad that fast? I’ll have to go back to interstate directly and have them load test them. The advance in my town sucks and the Napa I like doesn’t offer load testing.
Fleet Mechanic
Joined: Jul 2018
Posts: 1,629
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From: Jacksonville Florida
Worse case, you can buy a tester online for $50 +/- I would definitely check on voltage s at start up. Do you have any kind of scanner / monitor? Monitoring your system can tell you a lot about what's up, Forscan Lite on your cell phone$4.99 in the app store and a $20 obd11 dongle will give all the info you need to monitor these motors. And can save you a lot of money.
Go up to tech files at the top of this page s and look at some of th s posts related to your problem. They are very informative.
Go up to tech files at the top of this page s and look at some of th s posts related to your problem. They are very informative.
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Worse case, you can buy a tester online for $50 +/- I would definitely check on voltage s at start up. Do you have any kind of scanner / monitor? Monitoring your system can tell you a lot about what's up, Forscan Lite on your cell phone$4.99 in the app store and a $20 obd11 dongle will give all the info you need to monitor these motors. And can save you a lot of money.
I have a new edge cts3. It comes on after the truck has cranked over and is running, but the voltage display shows 11.5 after startup and then slowly rises once the alternator kicks in and then goes up to 13.6-13.8.
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Can I read the voltage with a multimeter to one of the batteries while cranking and see what it drops down too? Would it matter if I did it when “cold starting” or after it has been ran?
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Fleet Mechanic
Joined: Jul 2018
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From: Jacksonville Florida
Theoretically yes. I wouldn't risk it myself. You definitely have symptoms of bad batteries. I would do whatever it takes to test, or replace batteries. Testing, for me would be first. Throwing money at a problem doesn't solve it.
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This is perfectly normal operation. Usually when you load a tune, at least on my SCT, the fuel pump, etc never comes on. You might try warming the truck up before loading your tunes to help keep the glow plugs coming on and/or letting the fuel pump time out before letting the tuner flash the PCM. Otherwise, I'd try SCT to see what they say.
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This is perfectly normal operation. Usually when you load a tune, at least on my SCT, the fuel pump, etc never comes on. You might try warming the truck up before loading your tunes to help keep the glow plugs coming on and/or letting the fuel pump time out before letting the tuner flash the PCM. Otherwise, I'd try SCT to see what they say.
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