Lock up solenoid indicator light...

[86GN-862+2]

Ok, I know some of you may have already added this feature to your already crowded dash. I was wondering how and where it would be the best place to splice an indicator light so that I know when the converter locks up. I was thinking the best place would be right at the connector on the transmission since the ALDL port or ECM may indicate lock-up even if the converter doesn?? Please elaborate. The other thing I think I know is that I can use a 12V lightbulb. Is this a good idea or scrap it? Maybe the tranny guys(transmission that is...) could add it to theirs as an extra but for free??

 

[turbo nasty]

Other than racing why would you want to know when it locks up via a light?

At cruise if you cant tell when it does then theres a issue IMO.

AT WOT racing put it on a switch and then wire a light if need be but there is no gaurentee that the clutch is locking as it could be worn, slipping, etc it will only verify the elec circuit.

Pretty sure the ECM grounds the TCC solenoid to Lock. If that is teh case and my memory serves me right them simply splice in your ground off of your light/LED /whatever to the ground wire of the TCC and when the ECM closes the circuit the light will illuminate.

Best bet would be to log rpm and then you could see teh rpm dropp when it locks

 

[mikestertwo]

There is no idicator that tells you if the converter has locked. You can only monitor the TCC command. You can put a lamp between pin "F" on the ALDL and 12 volts. I would use a low current lamp or a LED if your going to try it.

 

[salvageV6]

I use an LED, green one.

As mentioned use a +12 IGN source directly to the + side of a medium brightness LED and place the ground side to the ALDL port pin F.

When the ECM or a switch commands lockup the LED will light.

Make sure the LED is rated for 12 volts, Radio shack has them, or use a 470 ohm or so resistor in series with the + or - (ground) lead.

 

[86GN-862+2]

Other than racing why would you want to know when it locks up via a light?

At cruise if you cant tell when it does then theres a issue IMO.

AT WOT racing put it on a switch and then wire a light if need be but there is no gaurentee that the clutch is locking as it could be worn, slipping, etc it will only verify the elec circuit.

Pretty sure the ECM grounds the TCC solenoid to Lock. If that is teh case and my memory serves me right them simply splice in your ground off of your light/LED /whatever to the ground wire of the TCC and when the ECM closes the circuit the light will illuminate.

Best bet would be to log rpm and then you could see teh rpm dropp when it locks

I wanted to know exactly when this happens since my car's transmission is acting up on the 2-3 shift. It feels as if it takes off in second gear then it spools nicely but when 3rd kicks in, it falls flat on its face due to the great RPM reduction while causing big KR number to show up on the SM. So I'm trying to figure out if the TT chip or ECM is locking up the converter at the same time 3rd comes in. I was under the impression the converter would lock up only on 4th gear and possibly 3rd if under 1/2 throttle. I'm just trying to know exaclty what's going on and when in order to have better understanding of how my car works.

 

[86GN-862+2]

I use an LED, green one.

As mentioned use a +12 IGN source directly to the + side of a medium brightness LED and place the ground side to the ALDL port pin F.

When the ECM or a switch commands lockup the LED will light.

Make sure the LED is rated for 12 volts, Radio shack has them, or use a 470 ohm or so resistor in series with the + or - (ground) lead.

I'll try this since it seems to be the easiest and most accessible way. Thanx!

 

[turbo nasty]

I wanted to know exactly when this happens since my car's transmission is acting up on the 2-3 shift. It feels as if it takes off in second gear then it spools nicely but when 3rd kicks in, it falls flat on its face due to the great RPM reduction while causing big KR number to show up on the SM. So I'm trying to figure out if the TT chip or ECM is locking up the converter at the same time 3rd comes in. I was under the impression the converter would lock up only on 4th gear and possibly 3rd if under 1/2 throttle. I'm just trying to know exaclty what's going on and when in order to have better understanding of how my car works.

Disconnect the Plug and drive it and se if its still there.

From the factory there are 2 psi switches on the VB...one for 3rd and one for 4th gear, this tells the ecm to lock in either gear once programmed mph is reached.
If you unplug the 4 wire plug on teh side of teh trans and drive it if it does it then you know it is NOT teh L/U