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Does anyone know how to reach LAN? Hydra/TCU issues
I am still having issues getting the Hydra to work with my transmission. I had AWD Tuning install the Hydra, and the engine is running well but it won't shift out of first. If i go back to my old ECU, it shifts fine so the TCU must be looking for some signal from the ECU that its not getting and I need to figure out what it is missing.
Since Mike (longassname) has so much experience with both the ECU and TCU, i was hoping he would have some insight into this. If anyone knows how to reach him, please let me know. Thanks!!
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'93 LS-L named "Samantha Victoria Xavier"...Sam for short. All new and improved custom built engine with forged internals, lowered compression, upgraded cams and a stage III supercharger. AMR Engineering struts, Custom exhaust --All 3 Subaru cats removed, and replaced with 2 high flow mustang cats-- Cross-drilled & Slotted rotors, steel braided brake lines, bypassed stock Tranny cooler replaced with aftermarket B&M super-cooler, and a K&N drop in air filter. |
#2
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Re: Does anyone know how to reach LAN? Hydra/TCU issues
I got in touch with him. Thanks everyone!
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'93 LS-L named "Samantha Victoria Xavier"...Sam for short. All new and improved custom built engine with forged internals, lowered compression, upgraded cams and a stage III supercharger. AMR Engineering struts, Custom exhaust --All 3 Subaru cats removed, and replaced with 2 high flow mustang cats-- Cross-drilled & Slotted rotors, steel braided brake lines, bypassed stock Tranny cooler replaced with aftermarket B&M super-cooler, and a K&N drop in air filter. |
#3
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Re: Does anyone know how to reach LAN? Hydra/TCU issues
What did he say about your problem
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#4
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Re: Does anyone know how to reach LAN? Hydra/TCU issues
This is interesting, I think most of the hydra people had manual swaps, so I wonder if it ever came up before.
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1992 LSL ebony pearl 170k - Thank you Ron Mummert Reading Box of Wine Car ----------------------------------- 1992 SVX LSL 5-Speed Sold at 180K 2019 1995 SVX Lsi Polo Sold at 118K 2007 |
#5
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Re: Does anyone know how to reach LAN? Hydra/TCU issues
I'm also curious as to the solution
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[SIGPIC][/SIGPIC] STi BBS wheels,legacy gt 4.44, 3" catback exhaust, Stance GR+ 7k/5k, QS Teflon adjustable endlinks, Hankook EVO 245/40/17, 95-LS escaine seats, GC8 V7 steering wheel, JDM clear corners, small car clear lenses, Alcyone badge, JDM rear taillight, 97 grille, stevesby bumper, PWR radiator, Perrin Crank pulley, Urethane Swaybar bushings, urethane diff bushings, DDM 6k 55watt lows and 4500k 35watt fog lights; $15/15min mod, Motorsport whs 22mm rear swaybar, QC shift kit, ToMyx intake, z32 aluminum calipers 13" rotors, nitrous express proton + wet kit. |
#6
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Re: Does anyone know how to reach LAN? Hydra/TCU issues
I haven't resolved it yet. I'm going to PRT performance after work to talk to Steve about it but this is what Mike replied with:
Hey Ray, Yes, the TCU shifts according to vehicle speed & throttle position. Both vehicle speed sensors are on the transmission. Vss1 is the main sensor and is on the extension housing. Vss2 mainly drives the speedometer and is on the bell housing. I imagine you messed up the throttle position sensor signal.
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'93 LS-L named "Samantha Victoria Xavier"...Sam for short. All new and improved custom built engine with forged internals, lowered compression, upgraded cams and a stage III supercharger. AMR Engineering struts, Custom exhaust --All 3 Subaru cats removed, and replaced with 2 high flow mustang cats-- Cross-drilled & Slotted rotors, steel braided brake lines, bypassed stock Tranny cooler replaced with aftermarket B&M super-cooler, and a K&N drop in air filter. |
#7
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Re: Does anyone know how to reach LAN? Hydra/TCU issues
UPDATE
I went to PRT Performance last night and did some diagnostic testing with them and long story short, the Hydra doesn't seem to be putting 5 volts to the TPS like it should. It only sends .5volts. When we connected the OEM ECU, the harness showed 5 volts so we know that it's the Hydra, or the wiring harness for the Hydra. I'm going to reach out to Phil and see what we can do.
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'93 LS-L named "Samantha Victoria Xavier"...Sam for short. All new and improved custom built engine with forged internals, lowered compression, upgraded cams and a stage III supercharger. AMR Engineering struts, Custom exhaust --All 3 Subaru cats removed, and replaced with 2 high flow mustang cats-- Cross-drilled & Slotted rotors, steel braided brake lines, bypassed stock Tranny cooler replaced with aftermarket B&M super-cooler, and a K&N drop in air filter. |
#8
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Re: Does anyone know how to reach LAN? Hydra/TCU issues
Thats good to know I have a hydra in mine and its not running need to put new motor in it
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#9
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Re: Does anyone know how to reach LAN? Hydra/TCU issues
So when i got the Hydra uninstalled I was looking over the harness and there were 2 wires coming from the SVX side that were not connected to anything on the Hydra side of the harness. I looked them up and one was the TPS ground wire, and the other was labeled "Shield"
Tonight i am going to splice those wires into the spots where they belong and try plugging everything back in. Wish me luck!
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'93 LS-L named "Samantha Victoria Xavier"...Sam for short. All new and improved custom built engine with forged internals, lowered compression, upgraded cams and a stage III supercharger. AMR Engineering struts, Custom exhaust --All 3 Subaru cats removed, and replaced with 2 high flow mustang cats-- Cross-drilled & Slotted rotors, steel braided brake lines, bypassed stock Tranny cooler replaced with aftermarket B&M super-cooler, and a K&N drop in air filter. |
#10
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Re: Does anyone know how to reach LAN? Hydra/TCU issues
Quote:
Make sure you splice the ground to sensor ground, if you have that specific pin available. If sensor ground is not an option make sure you don't ground it with other ignition grounds to prevent "noise/interference/ground loops". I would ground the "shield" to the body close to the Hydra. You should have a handful of other "shield" wires coming from crank/cam sensors. Where are those pinned to? -Sam L.
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Sam Brilliant Red 95 SVX L AWD 149K miles - #904/1801, 08 STI 6MT with DCCD & VSS, ACT SB10 HDSS, 6MT bushings, DW200 Fuel pump, 17x7.5 VX-SCYTHE Wheels, 17x8 BBS STI Wheels,PERRIN CRANK PULLEY, 911 Turbo oil filter,$15/15min MOD & $20/20min Mod, Brontrager WORKS 22mm RSB w/ QS component endlinks, SS Brake Lines, DDM TUNING 6000K HID LOWS, Hella Optilux Extreme Yellow Fog Lights,Window scratcher fix, JDM Clear Corners My Locker |
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