Running (not driving) a 4L80E without electronics?

Reply Subscribe

Thread Tools

Search this Thread

Sep 25, 2016 | 04:19 PM

StolenFox

Thread Starter

On The Tree

Joined: Oct 2006

Posts: 176

Likes: 4

Running (not driving) a 4L80E without electronics?

Is it ok to run my engine with the 4L80E and converter bolted up and ready to go but not have the EZ-TCU connected yet? Engine operation would be idle only and the transmission would be left in park. Reason being, I've got the LS engine in the car (BMW) and running (trans not installed) but will have to switch PCM's and rewire the harness for cable throttle. I don't want to wire in the EZ-TCU to the DBW harness only to have to tear it apart once I switch to DBC. I would like to install the transmission if I can while maintaining the ability to run the engine so I can test the PCM/Wiring change.

Thanks!
S.F.

Sep 25, 2016 | 04:36 PM

wht/73

TECH Enthusiast

Joined: Sep 2016

Posts: 518

Likes: 0

From: North Jersey

Why don't you just use the TCI TCU?
My buddy who's going to help me install my 80E has a 80 in his 71 GS 455 and loves the TCI TCU.
I'm going to use my compushift 1 in my nova.

Sep 25, 2016 | 04:45 PM

StolenFox

Thread Starter

On The Tree

Joined: Oct 2006

Posts: 176

Likes: 4

Quote:

Originally Posted by wht/73

Why don't you just use the TCI TCU?
My buddy who's going to help me install my 80E has a 80 in his 71 GS 455 and loves the TCI TCU.
I'm going to use my compushift 1 in my nova.

I have the Fast/TCI Ez-TCU already and will be using it but I don't want to install it yet because I will be modifying the engine harness in the specific areas where the EZ-TCU will be connecting. I want to be able to install the transmission (will allow me to move forward on the exhaust layout, driveshaft ordering, finalize O2 sensor wiring, etc) but I need to retain the ability to run the engine so I can make sure my changes to the PCM and wiring are functioning correctly. Once I know that change is good, I can then connect the trans controller.

S.F.

Sep 25, 2016 | 06:39 PM

clinebarger

TECH Fanatic

Joined: Jan 2015

Posts: 1,114

Likes: 33

From: Fort Worth, Texas

I don't really like it as you will have Maximum EPC Pressure. As long as the TCC doesn't drag.......You will be fine.

Sep 25, 2016 | 07:04 PM

StolenFox

Thread Starter

On The Tree

Joined: Oct 2006

Posts: 176

Likes: 4

Quote:

Originally Posted by clinebarger

I don't really like it as you will have Maximum EPC Pressure. As long as the TCC doesn't drag.......You will be fine.

Sounds like there is some risk involved, perhaps it's best if I get the PCM engine wiring finished up, test the new DBC setup and then install the transmission. Thank you for lending your expertise.

S.F.

Reply Subscribe

Reply Share

First
Prev
1 / 1
Next
Last