I am back!!

spy alelo · 08-21-08, 06:44 PM

Well hello guys, so far I still have my Legend, but I have a little problem here that I hope someone can help me with. Recently, the tranny stopped shifting from 1st gear to 2nd gear. Before anyone suggests cleaning the solenoids for the tranny, I need to mention that I replaced those with a brand new set from Acura when I originally had an issue like this, which fixed it. Anyway, I had to remove the seats and the carpet so I can wash it, since a nasty water leak from the sunroof drain ruined it. And I found that the Timer Rad Fan wires in the connector are completely corroded. So badly, they were not even in the harness, they broke off. Also, the TRF board is in a similar way (ECU is fine). Since the tranny relies so closely on engine cooling, is it possible that this is related to this issue? Several trouble shooting steps for the tranny points to engine coolant sensor, or faulty cooling fan control unit. Any ideas? Suggestions?

LegendLand · 08-21-08, 09:30 PM

welcome back to the forum... unfortunately, what you said is WAY over my head. Sorry

95AcLegendOwner · 08-21-08, 09:36 PM

How does your trans fluid look and smell? Is it brown and smells burnt or is it still bright red? If its any color other than red I would do a flush, (not a drain and fill).

Start there and see what happens. Btw, welcome back.

DallasLedge89 · 08-22-08, 02:23 AM

I checked the schematic once, when I had a trans solenoid lock-up problem, and the command path (voltage) goes like this: TW sensor > ECU > Fan Control Unit > TCU (in my instance, solenoid lockup command) > trans lockup solenoid).

I had overheating due to no cooling fan operation; a bad FCU was the problem, but replacing it also fixed my trans lock-up failure problem.

So, firstly, all bad, broken, or corroded connections in this electrical path must be properly repaired for the trans to shift normally.

spy alelo · 08-22-08, 02:26 AM

Sounds like I am on the right path!! Thanks, that gives me hope. And 95AcLegendOwner, the fluid is nice and bright red. I replace the fluid quite regularly, after 30,000 miles.

pnoye2 · 08-23-08, 03:22 AM

Quote:

Originally Posted by DallasLedge89

Corroded connections in the electrical path must be properly repaired for the trans to shift normally.

You're might be on to something here

...OP, please keep up posted on your progress?!? and welcome back!

spy alelo · 10-26-08, 11:01 PM

I forgot to update. Reworked the TRF unit by reflowing the solder joints and cleaned everything. I had to rebuild an electrical path in the board due to corrosion, but is all good now. Washed it with a special chemical, reinstalled everything, and replaced the defective harness. All good, now shifting from 1st gear. But of course, I have a new issue now, but it may be another problem. So I created a new thread.

08-21-08, 06:44 PM	#1 (permalink)
spy alelo Registered User Join Date: Sep 2004 Location: Houston Posts: 193 Car 1: 1990 Sedan LS iTrader: (0)	I am back!! Well hello guys, so far I still have my Legend, but I have a little problem here that I hope someone can help me with. Recently, the tranny stopped shifting from 1st gear to 2nd gear. Before anyone suggests cleaning the solenoids for the tranny, I need to mention that I replaced those with a brand new set from Acura when I originally had an issue like this, which fixed it. Anyway, I had to remove the seats and the carpet so I can wash it, since a nasty water leak from the sunroof drain ruined it. And I found that the Timer Rad Fan wires in the connector are completely corroded. So badly, they were not even in the harness, they broke off. Also, the TRF board is in a similar way (ECU is fine). Since the tranny relies so closely on engine cooling, is it possible that this is related to this issue? Several trouble shooting steps for the tranny points to engine coolant sensor, or faulty cooling fan control unit. Any ideas? Suggestions?

08-21-08, 09:30 PM	#2 (permalink)
LegendLand LS= Luxury Sport Join Date: Jul 2008 Location: Vermont Posts: 1,348 Car 1: 1991 Acura Legend LS Sedan Golden Glow Pearl Car 2: 1992 Acura Legend L Car 3: 2006 Honda Odyssey iTrader: (7)	welcome back to the forum... unfortunately, what you said is WAY over my head. Sorry __________________ "Goldie"- A 1991 Legend LS Golden Glow Pearl Type F interior- 141k miles Recent Mods: New paint and bodywork, speakers, Iggee seatcovers, moonroof, fogs, clear corner/bumper lights, Nokian WR G2 tires, 7 spoke coupe rims. Projects for 2009: Repair A/C, steering wheel audio control repair, fog switch, new heated seats, Reded out tails, new speaker mesh, timing belt, CAI, various interior parts, Type II cluster, new floor mats, interior LED swap. Progress Thread: The Legend Reunveiled

08-21-08, 09:36 PM	#3 (permalink)
95AcLegendOwner Ac N Up Join Date: Mar 2007 Location: Baltimore, MD Posts: 426 Car 1: 1995 Acura Legend Sedan Car 2: MARC Train iTrader: (1)	How does your trans fluid look and smell? Is it brown and smells burnt or is it still bright red? If its any color other than red I would do a flush, (not a drain and fill). Start there and see what happens. Btw, welcome back. __________________ This is not my KA9. Just had to take this picture.

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08-22-08, 02:23 AM	#4 (permalink)
DallasLedge89 Registered User Join Date: Mar 2006 Location: dallas tx Posts: 321 Car 1: 1989 legend coupe L iTrader: (0)	I checked the schematic once, when I had a trans solenoid lock-up problem, and the command path (voltage) goes like this: TW sensor > ECU > Fan Control Unit > TCU (in my instance, solenoid lockup command) > trans lockup solenoid). I had overheating due to no cooling fan operation; a bad FCU was the problem, but replacing it also fixed my trans lock-up failure problem. So, firstly, all bad, broken, or corroded connections in this electrical path must be properly repaired for the trans to shift normally.

08-22-08, 02:26 AM	#5 (permalink)
spy alelo Registered User Join Date: Sep 2004 Location: Houston Posts: 193 Car 1: 1990 Sedan LS iTrader: (0)	Sounds like I am on the right path!! Thanks, that gives me hope. And 95AcLegendOwner, the fluid is nice and bright red. I replace the fluid quite regularly, after 30,000 miles.

10-26-08, 11:01 PM	#7 (permalink)
spy alelo Registered User Join Date: Sep 2004 Location: Houston Posts: 193 Car 1: 1990 Sedan LS iTrader: (0)	I forgot to update. Reworked the TRF unit by reflowing the solder joints and cleaned everything. I had to rebuild an electrical path in the board due to corrosion, but is all good now. Washed it with a special chemical, reinstalled everything, and replaced the defective harness. All good, now shifting from 1st gear. But of course, I have a new issue now, but it may be another problem. So I created a new thread.

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