No CEL in key position 2 (1 Viewer)

[Blake Halfacre]

Hey guys... tried pouring over similar threads and cant seem to find a fix. I swapped in a running motor from a 96 LX450 into a 1994 LC that sat awhile. I can get it to run with starter fluid, but no CEL... could the ECU be bad?

 

[graham5david]

Did you swap ecu and harness as well. Isn't 96 OBD2 and 94 OBD1.

 

[Blake Halfacre]

I don't have a title yet... but the door manufacture date is 10/94 and it has an OBD 2 port. The harnesses engine are Identical from the donor. Are there different types of OBD 2?

 

[zapatius]

Yes to OBD2 and OBD1. If you swapped ECU and harness, then I would recommend igniter, fuel pump, fuel pump relay. Make sure timing is correct.

 

[zapatius]

Then it was probably a '95. Post a picture of the door tag and/or port.

 

[Blake Halfacre]

Then it was probably a '95. Post a picture of the door tag and/or port.

Here you go

 

[zapatius]

Here you go

There was no image.

 

[Blake Halfacre]

Then it was probably a '95. Post a picture of the door tag and/or port.

 

[Blake Halfacre]

Just an FYI I have 3 volts at the B+ diagnostic port w/ out key on and 12.4 with the keyon position 2

 

[cybrstar]

Forget the tittle and sell the axles. JK

K294=Tripple locked
A343F- 95-97 tranny
Build date 10/95 either could be a 1995 or 1996. Most likely a 1996

 

[zapatius]

Fuel pump relay good? Fusible links good?

 

[Blake Halfacre]

Fuel pump relay good? Fusible links good?

Yep... swaped out from the runner. Is the one for the fuel pump the grey plug or in the block? I havent tried to jump them yet.

 

[Blake Halfacre]

Forget the tittle and sell the axles. JK

K294=Tripple locked
A343F- 95-97 tranny
Build date 10/95 either could be a 1995 or 1996. Most likely a 1996

It's so close to being complete.. I've put an ome 2.5 lift on it. CDL switch. In dash cupholder.... I'm ready to mall crawl she deserves to live!!!

 

[ppc]

Forget the tittle and sell the axles. JK

K294=Tripple locked
A343F- 95-97 tranny
Build date 10/95 either could be a 1995 or 1996. Most likely a 1996

A "T" in the 10th position of VIN indicates a 1996 model

 

[Blake Halfacre]

A "T" in the 10th position of VIN indicates a 1996 model

It's a real gem alright... I just dont know what would cause the no CEL I've swapp3d everything related to it from the donor (with the exception of the ECM) could a dirty trans plug or something similar cut that readyness off?

 

[zapatius]

Do you have the other ECM to swap?

 

[Blake Halfacre]

Do you have the other ECM to swap?

Yeah I do.... I'm going for it tomorrow.

 

[BILT4ME]

What is the VIN tag from the truck you are trying to make run?

You showed one with 10/95 which is a 96, but you are referencing a 10/94 which is a 95.

If you actually have a 94 I'd be willing to bet it's the VAF/MAF/SMF whatever the hell it is for that year.

The fact that it will start and run on starting fluid points to the MAF thingy and secondly the IAC valve based on other posts here with similar issues.

Do a search for "starting fluid" and you'll find some explaining what they've done.

 

[Blake Halfacre]

If I have 12v at the diagnostic B+ that means my ECM has power... right?

 

[Blake Halfacre]

What is the VIN tag from the truck you are trying to make run?

You showed one with 10/95 which is a 96, but you are referencing a 10/94 which is a 95.

If you actually have a 94 I'd be willing to bet it's the VAF/MAF/SMF whatever the hell it is for that year.

The fact that it will start and run on starting fluid points to the MAF thingy and secondly the IAC valve based on other posts here with similar issues.

Do a search for "starting fluid" and you'll find some explaining what they've done.

I'm sorry... I was mistaken... the door tag in the pic is the recipient . I'll get a pic of the donor door tag donor tomorrow. Thanks for the heads up on the starter fluid posts. I'll read through them.