Holley Term X Max users
Thread Starter
Joined: Sep 2007
Posts: 4,188
Likes: 292
From: woodbine, md
Holley Term X Max users I am trying to track down a problem with my Term X, I know several people on here use one. I have my bat set up so I cut off the neg side of the bat., the only thing going to the neg side then is the large neg. lead from the ECU. If I turn the ign switch on, the 3.5" screen turns on, and the ECU makes a buzzing sound until it times out. Is this normal, I dont ever remember any of my HP's doing this. My problem is the CTS, MAT, and Trans temps are all off, so trying to eliminate everything that could cause this, already been thru all the grounding.
I am trying to track down a problem with my Term X, I know several people on here use one. I have my bat set up so I cut off the neg side of the bat., the only thing going to the neg side then is the large neg. lead from the ECU. If I turn the ign switch on, the 3.5" screen turns on, and the ECU makes a buzzing sound until it times out. Is this normal, I dont ever remember any of my HP's doing this. My problem is the CTS, MAT, and Trans temps are all off, so trying to eliminate everything that could cause this, already been thru all the grounding.
Andrew
Thread Starter
Joined: Sep 2007
Posts: 4,188
Likes: 292
From: woodbine, md
App everything was trying to use the Holley ground, so I put the other grounds back on, was just trouble shooting.
Hard wired my grounds, moved the cutoff to the + side.
Hard wired my grounds, moved the cutoff to the + side.
ive now sent 2 terminators back for warranty replacement. they are not as robust as the HP. thankfully the service process is fast and easy.
also note: there is no upgrade path to the HP. so if you're on the fence, buy the HP.
also note: there is no upgrade path to the HP. so if you're on the fence, buy the HP.
Thread Starter
Joined: Sep 2007
Posts: 4,188
Likes: 292
From: woodbine, md
I have a feeling the ECU is the problem, I have exhausted everything else. Car runs fine, just sensor problems, other sensors that share the same ground are fine. The wiring diagram for the Term. isn't very readable.
Although it is a new unit, I bought it off someone on here, so prob no way I can get a war. I emailed Holley,
but never heard back, covid 19 has made things worse. Hoping I can find someone to try mine out, see how it works, at least prove something.
I agree, the HP's seemed to not have these problems, I had 3 of them and never a problem.
Although it is a new unit, I bought it off someone on here, so prob no way I can get a war. I emailed Holley,
but never heard back, covid 19 has made things worse. Hoping I can find someone to try mine out, see how it works, at least prove something.
I agree, the HP's seemed to not have these problems, I had 3 of them and never a problem.
Trying to ground the car through the ECM isnt a solid move for any ECM.
Kinda happy the Termi isn't as heavy as the HP or Dominator, those things are bricks.
Since Holley keeps raising the prices, the easiest upgrade path is to sell the Termi and buy a full replacement. At this point I don't see a reason to buy HP, Holley asking $2100 for it with no screen is absurd. You can get a FuelTech kit with screen and a nicer harness for that money.
Since Holley keeps raising the prices, the easiest upgrade path is to sell the Termi and buy a full replacement. At this point I don't see a reason to buy HP, Holley asking $2100 for it with no screen is absurd. You can get a FuelTech kit with screen and a nicer harness for that money.
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Thread Starter
Joined: Sep 2007
Posts: 4,188
Likes: 292
From: woodbine, md
Its on its way back to Holley, so we will see what they find. At least I was able to drive down the street and back, ck out the trans, brakes, steering, now I can finish up the little things while I wait.
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Verdad Gallardo I wanted a lightweight car so I get concerned about the weight of everything, that's how I got a twin turbo LS down to 2300lbs. Terminator works fine for me and it was at the right price at the time. But I wouldn't expect Holley or anyone else to warranty a unit that was used improperly.
the terminator being unpotted does make it easier to work on, replace mosfets etc but if I were to buy again, especially for a drag week car I'd buy a potted unit.
I am always curious about people that do extreme weight cutting on their cars....did you put yourself on a diet as well? I'm picturing you running the track in plastic garbage bags to cut weight like we did in high school wrestling
I am always curious about people that do extreme weight cutting on their cars....did you put yourself on a diet as well? I'm picturing you running the track in plastic garbage bags to cut weight like we did in high school wrestling
the terminator being unpotted does make it easier to work on, replace mosfets etc but if I were to buy again, especially for a drag week car I'd buy a potted unit.
I am always curious about people that do extreme weight cutting on their cars....did you put yourself on a diet as well? I'm picturing you running the track in plastic garbage bags to cut weight like we did in high school wrestling
I am always curious about people that do extreme weight cutting on their cars....did you put yourself on a diet as well? I'm picturing you running the track in plastic garbage bags to cut weight like we did in high school wrestling
Thread Starter
Joined: Sep 2007
Posts: 4,188
Likes: 292
From: woodbine, md
My ECU ended up being def., I guess something inside didnt get hooked up inside or whatever, funny it only aff. the 3 temp. sensors. Anyway, replacement is on the way.
Curious what you mean by potted and unpotted on these things.
Curious what you mean by potted and unpotted on these things.
Unpotted extreme case just means a lamina with components attached and no coating.
An extreme case of potted means the board manf coats the lamina with a heavy coat of epoxy to seal it from water/vibration. Or just humiseal and then ruggedize individual components, but thats costly.
Unpotted extreme case just means a lamina with components attached and no coating.
Unpotted extreme case just means a lamina with components attached and no coating.
Andrew
Thread Starter
Joined: Sep 2007
Posts: 4,188
Likes: 292
From: woodbine, md
I remember when guys were accidently pulling the comm. cable out of the HP's and Doms (tie that cable up so you don't) and they were ruined, but a guy on Yellow Bullet found a way to repair them.
Most people don't realize it, but part of the v5 update was USB to CAN communication for HP and Dominator ECUs. This was done for those guys that had broken their USB ports.
Sniper and Terminator X use the 558-443 USB to CAN cable for laptop connectivity. With v5 this was extended to HP and Dominator ECUs. So if the USB port on a HP or Dominator is broken, you can use that same cable to tuning with a laptop.
Andrew
Andrew
Ah ok. My 3.5” screen is plugged into the CAN cable connector right now. Nice to know I could still access that way though.