ooohhh ok I see

 

How about the firt (ecm) circuit 963 go to Vats .if i have no vats where That cable go to ????

 

963 is the cranking fuel enable input to the ECM. Normally the VATS module would ground it to tell the ECM it's ok to supply fuel. I suspect someone has simply grounded it & recommend you leave it that way.

 

I just came from my car. remove the midle dash and passenger side dash.

I have new pictures a new questios. here we go

this is the relay .there is 4 cables coming out of this.

1 green cable with white strips.
2 yellow cables
1 thin green cable

[IMG][/IMG]

the 2 yellow cable coming out of the relay. come together. with 1 yellow cable coming out of the ignition swish

[IMG][/IMG]


now in the other hand the push buttom have 2 cables. one go to the car battery direct. and the other go to the starter motor on passenger side on engine bay.

if I push the buttom the car crank no mattter what the ignition key position is


what can you make out of this

 

also i forgot.

there is a purple wire. with the end tapeup

dont know what it is. can someone ID this wire.

[IMG][/IMG]

 

ttt

 

The two yellow wires are circuit 5. When the ignition switch is in the start position they bring battery power to the start enable relay.

The small dark green wire is circuit 965. The VATS decoder grounds this wire to enable the start enable relay. If you grounded this the start enable relay would always be on when power was applied to the yellow wires. (One possible way to bypass VATS)

The green wire with white stripes is circuit 916. When the start enable relay is triggered power flows from the yellow wire, through the relay, through circuit 916 to the transmission position switch. (You have an automatic, right?) If the transmission in park or neutral the transmission position switch connects circuit 916 to circit 6 (the purple wire you asked about). Purple circuit 6 is supposed to go to the starter.

If the other end of purple circuit 6 is still connected to the starter then you could connect the taped off end to one of the yellow circuit 5 wires and, if your ignition switch still works, you would then crank when the ignition switch is in the start position. This bypasses the transmission position switch though.

If you want the transmission position switch to do it's job then you need to reconnect the purple wire to it. Make sure the green & white circuit 916 wire also still connects to the transmission position switch. Then you can bypass the start enable relay in one of two ways: ground the thin green wire (circuit 965), or connect the yellow wire (ckt 5) to the green & white wire (ckt 916) directly.

PS: Agent 86's scans are great, but they're black and white. The FSM schematic is in color which helps in identifying the wires. Your's is on order...right?

 

Oooh, my scanner is working again! The schematic from my '87 FSM shows the connection to the starter better:

 

wwoooo I be needing some time to asimilate, all the information you just give me.

thank you. I get back. to you

 

OK my vette is automatic trasmision . I think the best way to doit will be to ground the small green cable.

and reconect the purple cable to trasnmission position switch
also check that the green and with cable is conectect to the switch also.

if i get this right . if I ground the small green cable . that will make a bypass the VATs problem?

now the question is . where is the transmission position switch location

 

Yes...if all the other wiring is correct, grounding the small green wire is a simple way to go.

The transmission position switch should be in the center console associated with the shifter. It isn't shown in any of agent 86's scans however the "gear selector switch" in these figures
http://members.shaw.ca/agent86/Under...nter%20Console
http://members.shaw.ca/agent86/Underneath%20Console.gif

are labeled as the transmission position switch in my '87 FSM. Here are the corresponding figures from my FSM:

 

You're welcome. Take your time, you're doing the hard part, I'm just reading the manual.

This should work but still uses the start enable relay. Without VATS you don't really need the relay, so shorting yellow and green/white wires together bypasses the relay entirely.

 

I have much to learn máster. The force is very strong on you.
thank You

 

I am a gnat compared to the knowledge and experience shared by others on this forum.

 

Cd87. Where did you get all those schematics and images? Can i download them somewhere?
Also, excuse the noob question, what is the vat system?

 

See post 7 of this thread.

The best way to get them is to purchase a factory service manual for your model year.

http://www.helminc.com

Where I've posted pictures, they are scans from my FSM.

Vehicle Anti-Theft System

It measures the pellet resistor in the ignition key and disables the starter and fuel injection if the wrong value is detected. This should be discussed in your owner's manual.

 

I did it. I want to thank everyone for there help. and advice,

I want to tell very one how I did fix the cable push buttom start.

1-I began on the start enable relay. I follow the green wire with white stripes. I make sure it go from the relay to the trasmision position switch. that was ok

2-them I located the purple wire. make sure go from the TPS to the starter motor. that was ok.

after that all I have to do is connect the yellow wire to the green with white stripe wire.

at this time I imagine that I can make the conection on the relay it self.

so here are some pics of what I did.

I remove the relay. from the plug
[IMG][/IMG]

I get a thin metalto use as a connector
[IMG][/IMG]



here isthe push buttomand old cable. ready to go to the trash

[IMG][/IMG]


key start ok now.
thank you all again.

 

Inthe other hand....remeber that purple wire. with the tape at the end. well that was not the correct purple wire. I was looking for.

I still dont know what that purple wire is for. All I know is not coming out of the trasmission selection switch. it go back on the dash and lost in a world of colored cables.

here is a pic of that cable in case you dont remeber

[IMG][/IMG]

 

Will the shop manual have all the schematics in color or black and white?