16v ecu install - stray wire ? And start interlock

[Rotazuk]

Hi
I am wiring up a 16v vitara ecu into a flatdeck 413 , its out of a 91 import . It is an auto ecu so has a couple of extra wires , no worries there .
But I have one wire that is not on the wiring diagrams on suzuki info site . It goes to plug B19and is a grey wire with white stripe . Anyone know what it is ? I have nothing to match it up to and have cut out pretty all the loom .
At this stage I will leave it as is and see if it runs but if not it could be a problem

Cheers
Chris

[BlueSuzy]

Yeah do that..

If it runs fine, And the fuel economy is ok, Just tape it up and mark it.
I have done this to many wires. So if i want to get back to them its easy.

Like load wires etc, for power steer etc.

[Rotazuk]

Hi
Well the engine does not run . A couple of issues , one it would appear to be out of gas and two it has no spark .
Question , has anyone wired up an auto ecu before ? What did you do with the start interlock that runs to the ecu . i did nothing and wondering if that is my problem . A quick look at the wiring diagram and it seems the ecu gets 12v via the park switch in the auto when starting .

Will look into it in more detail tomorrow , but was hoping someone has already sorted this .

Cheers
Chris

[BlueSuzy]

Yes i think thats how some work.

If thats the case, I think i would just supply some accesory 12v power to the park wire via fuse.


Trying to help ya

(Wait for more replys, Im no electrician)

[nicbeer]

mine was an auto and afaik didnt do anything with the auto wires.

the 4sp auto diagram is on the suzukiinfo.com also

if cant find it i should have it at home.

[Rotazuk]

Hi
Looked through the diagram and the start interlock needs 12v during start by the look of it . I just wired this together with the other start signal and it gave me spark . A bit of gas in the tank and now it tries to run but dies straight away . Was getting to late to carry on so will see if I can get it to run properly tomorrow .
Otherwise I will have to tear the car apart to find were that grey/white wire goes :( .

Cheers
Chris

[nicbeer]

sure B19?

i could only find on one of my manuals is B19 is a grey/wh and is for the CO limiting resistor for vehicles without O2 sensor.

this on the ecu or tranny ecu plug numbers?

also on the intake make sure u have the small box connected on the intake tract as without this or blanked off it will not idle.

[Rotazuk]

Hmm
Yes definatelty B19 , its grey and white . It has a single wire o2 sensor so not sure why it would have the co2 resistor . Any chance of a copy of that page so I can trace it back in teh car maybe .
It does have a catylic converter in it .

By the box on the intake I guess you mean the air box thing . Odd it will not run witout that , have not pulled it apart to see whats inside it yet but no wires to it . Anyway its still attached , all factory up to the air filter .

Cheers
Chris

[nicbeer]

PM me ur email and i will try get the diagrams in pdf.

yeh that box is empty and i beleive it just confuses the air flow sensor i beleive.

[Rotazuk]

, got the engine running . Could only run it for a little bit , as it was tossing oil out the gearbox as there is no shaft in there . It took a fair bit of stuffing around to get it running , ended up putting new plugs in it but I do not think that was an issue .

It is running very high and surging from 2000 to 2700 and back down again . With teh hassles starting it etc I suspect it may have a stuck injector . Anyone had this ? Once I get a t/case in there and a shaft in then I can run it properly and see what its really doing .

Whats the best way to test for a leaky injector , without replacing them all ?

Cheers
Chris

[nicbeer]

is the surging happening after a hard blip?

as mine did this but settled it self down after a little bit of driving.

i thought it may have been ecu relearning or somthing like this?

[Mudbits]

Make sure you have everything well earthed, including the coil. To test for injectors leaking spray engine start around them and if it idles up you have a leak but i would doubt this is your problem.
Get every thing you can connected and well earthed and try again. You do have an airflow meter right?

[Rotazuk]

Hi

Yep its earthed up the waszoo as the megasquirt that was in there before was very picky on earth . I was starting to think I had a few to many causing a couple of loops somewhere but it starts now .

It has everything out of the vitara in it and all wired up bar the stray wire , a/c idle up and ps idle up . Has the vss in the dash and using factory dash wiring for the vss . But since it has no t/case can't take it anywhere . It has the airflow meter , older stile flapper type .

Its at idle it surges , sets at 2g and runs up to 2700 and back again . I can't run it until med next week now as it has no t/case so it spits the g/box oil out . Once its all in I can let it run a bit longer and start checking a few things .

By leaky injector I mean a stuck open injector . I was having the same problem when setting up the megasquirt , if you did not get it fired up promptly it would flood and not run . With the megaswuirt thou I thing I may have hidden the issue by backing the fuel out at idle . now it have the factory ecu again its over fueling etc as it can;t shut the fuel off enough .

All theriory until I can run it again , will post once I have it in a state to run long term . At least its going now thou , starting to think I may have fried it as it started fine and got worse and worse over time .

Chris