TUrbo timer mayday (no 56K?)

[Datsrboi]

I brought this car off the original owner who recently had his supra broke into awhile back. He said it was a HKS timer. Today I finnaly had time to start working on my supra to see what he had done to it under the dash. I am guessing its a HKS timer harness and when I looked closer saw this......

What and how the heck can it melt? Its a plug and play so how can it go bad? Also I started thinking that I remember reading how they said the 87 harness is different from the 91? Is that just the connector or are the wires different too? Can someone give me some answer to why it melted? I am not sure if the wires were touching after it melt but I do see the wires are exposed. Maybe that is why my charging system went bad and all the fuse blew? I am guessing at some point the red wire touched the green wire after it had melt.

Help.

 

[Big Wang Bandit]

All I know is the one I had in my 89 is for sale :icon_bigg

 

[Datsrboi]

All I know is the one I had in my 89 is for sale :icon_bigg

How much? Just the harness? Im guessing my harness was for my model because it says so on some site with the same model number on it.. So at this point I am confuse. Everything on the car runs fine and no fuse are blowing. SO I dont get why it melted.... I have the TT-1


4103-RT001 TOYOTA Supra 1987-1990 Turbo TT-1 $12
4103-RT003 TOYOTA Supra 1991-1992 Turbo TT-3 $12

 

[Big Wang Bandit]

Yeah, its TT1, If you really want it PM me. Its not really worth much to me

 

[lagged]

dose that one have the 12v switched and 12v battery leads open for other accessories? one of those could have contacted a ground and caused the short.

 

[Datsrboi]

dose that one have the 12v switched and 12v battery leads open for other accessories? one of those could have contacted a ground and caused the short.

I seriously do not know. I am not good with electricals. Anything you see in the picture is all I know.

 

[silvergsx623]

Looks like someone got hungry... lol

like he said ^. if it grounded out on a non fused circuit... it could have melted and could have burned the car to the ground.

 

[JustinGotA1j]

I see stuff like this all the time at work. (I'm an apprentice electrician) What probably caused it was just a shitty connection at the connector. Bad connections cause heat and well we all know what enough heat can do.

 

[Datsrboi]

I do not know what to do right now. Buy a new TT-1 harness and HKS timer and pray it doesnt do that again or should I do what?

I do not know if this helps but I do not know if it melted when it still had the timer in it or after. I have also had problems with the charging system and allot of my fuses in the engine bay had blown but it was fix and replace and hasn't pop since (been a month but only drove the car 3 times in the last month for like 10 minutes total.). I just now removed the timer harness and started the car just fine.

 

[TurboWarrior]

Either the wires touched ground and began to heat up and melt (maybe a slice in the wire from rubbing somewhere), there was too much load on those wires or the turbo timer malfunctioned internally crossing leads somehow. But I would think the TT would have started smoking too.

 

[Mr.PFloyd]

or just remove the useless item and call it a day.

 

[TurboWarrior]

It allows you to walk away without sitting in the car while it idles. How is it useless?

 

[Mr.PFloyd]

It allows you to walk away without sitting in the car while it idles. How is it useless?

because contrary to popular belief, turbo cars do not need to have a device to let it idle after shutdown.

 

[TurboWarrior]

Well if i don't the car heatsoaks and is hard to start

 

[Reaper Man]

Well if i don't the car heatsoaks and is hard to start

what?

afaik, the theory behind having a Turbo Timer was to allow oil to circulate and cool the turbo, leading to longer turbo life

 

[TurboWarrior]

Well thats how my supra and my old supra have always been. If I don't run the car for at 25-30 seconds after stopping it will be hard to start later

 

[Datsrboi]

For now I will not be running any Turbo timer. I just connected my ignition harness back to the way it came out of the factory for. But when spring come then I might get one then.

I notice on the TT-1 harness though that there were no cuts in it that could have ground it out. I do notice though that only the green wires and red wires were effected. All the way on the taped up section of the wire to the turbo timer the green wire had melted all over the place when i had cut the black tape off but the red and blue wire was not harm. On the other red wires that connected from one harness of the ignition to the other end it had melted away. Even the harness clip in one end had melted.

 

[Poodles]

because contrary to popular belief, turbo cars do not need to have a device to let it idle after shutdown.

As long as the turbo is water cooled, you don't need a TT...

A non-water cooled turbo I would run one on though. Also, good modern oils don't coke up like old oils do.

If your car heat soaks, you have other issues not related to idling the car down...

The only thing I can think of with the wiring harness is if they tried to hotwire the car and the TT got in the way and the harness melted. Might have saved him from having his car stolen...

 

[89TurboPC]

If you don't push hard on the turbo on your way to the parking spot, you don't need TT. I mean, with couple minutes from the time you enter the parking lot and until you park the car, it's enough time to circulate that cook oil.

Why the connector fail? Crappy quality/design.
If you compare the stock ignition wires, those wire is very darn thick (8 or 10 GA) compare to the adapter harness (12 or 14 GA.) Those wire push a huge amount of current and was restricted by a small wire. Thus it will heat up and burn. Although the distance of the wire is too short but it bad enough to cause problem. Try to power your 200W + amplifier with a 5ft of 16GA wire. I'm sure it will melt in a minute.
If the connector isn't crimp right, it will also cause problem too. I think the combination of the 2 (small wire and lousy crimp job) cause the path more resisted and that is the source of the problem

 

[Grimsta]

The connectors problem was probably a bad ground. Not from that plug n play it self but the actuall timer ground. I had the same prob with my electric fans. My ground was bad causing the wires to run hot w/ too much voltage and they eventually melted. I made the ground better, in the correct location and the wires dont heat up anymore. I just have to repair my ignition harness now too, lol