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-   -   electrical nightmare incarnate (http://www.njfboa.org/forums/showthread.php?t=28588)

PolarBear 09-12-2007 10:13 AM

Quote:

Originally Posted by Tru2Chevy (Post 377904)
Isn't vats controlled by the ECM...which is no longer in the car?

And doesn't Vats only stop power from going to the fuel pump? Meaning that the car will crank all day, but won't start?

- Justin

I think depending on the year VATS was twofold. It sent a signal to the ECM to pulse the injectors, so if you had the wrong key, failed key or no key it would crank but not fire. Second (as shown in the diagrams Scott put up) it grounded the relay for the starter, so if you had no VATS you wont be able to crank. I know from experience :lol: . I am guessing that it may be a VATS issue here. Scott if you want some help with this next time you go let me know and I can lend a hand.

89CamaroRS 09-12-2007 02:45 PM

alright then, tomorrow i'll try gettin around the VATS system. keep ur fingers crossed.

PolarBear 09-12-2007 02:51 PM

IIRC There should be 4 wires on the starter relay. It should be behind the DS kick panel where the hood release is. Should be a silver box with the 4 wires, 2 large gauge and 2 small gauge. Mine has a light color wire (maybe yellow) and a dark wire with a stripe. I extended the dark small gauge wire and put a ring on the end of it and put it under the screw for the seat belt indicator, solved my problem for the cranking.

BonzoHansen 09-13-2007 11:08 AM

2 Attachment(s)
I found ok not great wiring diagrams. Probably hoisted off the autozone site before AZ pulled the 3rd gen diagrams (I'm guessing copyright/payment issues).

http://www.austinthirdgen.org/index.php?pid=19

For the fuel pump IF the red wire to the relay is only hot on START, then you can use it to trigger the realy. All other wiring stays the same. Parts store relay in case of problem, and GM wiring.

I make the assumption that red wire is hot at crank only because it not it would keep the FP running all the time. I know there is a crank fuse.

Also Will, the diagram shows that pink lead from ignition switch to ign coil, so like I told you, splice that big pink out of the harness to the HEI (test it 1st, of course). S-Can that temp HEI wire you have now.

BonzoHansen 09-13-2007 11:13 AM

2 Attachment(s)
Cooling fan - add a switch. I see no switch in these diagrams, so what we saw must have been a CTS. No good for us.

Like this, again this lets you buy parts at any parts store.

89CamaroRS 09-13-2007 03:22 PM

Quote:

Originally Posted by scooter (Post 378404)
IIRC There should be 4 wires on the starter relay. It should be behind the DS kick panel where the hood release is. Should be a silver box with the 4 wires, 2 large gauge and 2 small gauge. Mine has a light color wire (maybe yellow) and a dark wire with a stripe. I extended the dark small gauge wire and put a ring on the end of it and put it under the screw for the seat belt indicator, solved my problem for the cranking.

Just pulled that kick panel off. I dont have any relay behind there. Could it be in another spot?

PolarBear 09-13-2007 03:24 PM

Quote:

Originally Posted by 89CamaroRS (Post 378659)
Just pulled that kick panel off. I dont have any relay behind there. Could it be in another spot?

Maybe that is why it wont crank? :lol: I am not sure. That is where it was on both of my 3rd gens. You may just need to start tracing wires.

PolarBear 09-13-2007 03:29 PM

Quote:

Originally Posted by BonzoHansen (Post 378600)
For the fuel pump IF the red wire to the relay is only hot on START, then you can use it to trigger the realy. All other wiring stays the same. Parts store relay in case of problem, and GM wiring.

I make the assumption that red wire is hot at crank only because it not it would keep the FP running all the time. I know there is a crank fuse.

That red wire should not be connected to anything, should just be hanging with a protective cover under the relay, it is so you can manually prime the fuel pump. You apply power to it.... You wouldnt know it unless you have seen it before. The first picture is not great, or for the wrong year. We just need to look at my books, let me know when you get home and I will bring them over

89CamaroRS 09-13-2007 03:39 PM

Quote:

Originally Posted by scooter (Post 378661)
Maybe that is why it wont crank? :lol: I am not sure. That is where it was on both of my 3rd gens. You may just need to start tracing wires.

I do have a black box behind some sort of sticky pad under that kick panel. It has 4 wires coming out of it but it's 3 large gauge and one small. 2 yellow and 1 green w/stripe large gauge and one green small gauge. Could that be it?

BonzoHansen 09-13-2007 03:43 PM

1 Attachment(s)
Quote:

Originally Posted by scooter (Post 378663)
That red wire should not be connected to anything, should just be hanging with a protective cover under the relay, it is so you can manually prime the fuel pump. You apply power to it.... You wouldnt know it unless you have seen it before. The first picture is not great, or for the wrong year. We just need to look at my books, let me know when you get home and I will bring them over

Actually, that makes some sense.

PolarBear 09-13-2007 04:16 PM

Quote:

Originally Posted by 89CamaroRS (Post 378665)
I do have a black box behind some sort of sticky pad under that kick panel. It has 4 wires coming out of it but it's 3 large gauge and one small. 2 yellow and 1 green w/stripe large gauge and one green small gauge. Could that be it?

Yes that is it, I forgot about the pad with the adhesive on it.

89CamaroRS 09-13-2007 06:14 PM

Quote:

Originally Posted by scooter (Post 378681)
Yes that is it, I forgot about the pad with the adhesive on it.

Kool, thx. Then i should be grounding the only small wire (dark green)?

PolarBear 09-13-2007 08:51 PM

Quote:

Originally Posted by 89CamaroRS (Post 378723)
Kool, thx. Then i should be grounding the only small wire (dark green)?

The colors of the wire in my Helms manual (I have the 91 manual) are different but I think that should be the one

PolarBear 09-15-2007 09:40 PM

How is it going?

89CamaroRS 09-16-2007 01:37 PM

Quote:

Originally Posted by scooter (Post 379283)
How is it going?

Sorry, my band had shows all weekend. Just got a chance to ground that relay. No change with the one small gauge green wire grounded. i have 2 large gauge yellows and one large gauge green w/white stripe still. Should i try anything with them?

PolarBear 09-16-2007 09:38 PM

Not sure, I wouldnt mess with anything else until you get a book with wiring diagrams for your year. Just let me make sure I got this correct, you havent done anything (other than listed here) to the harness switching from the V6 to the carb, right?

89CamaroRS 09-16-2007 10:34 PM

i removed the MAF sensor and a couple other sensors that the FI system used. Nothing that would affect cranking. And of course, this is a problem i had before the swap was even started so i doubt it has anything to do with it. Can anyone suggest a place to pick up a good diagram?

BonzoHansen 09-17-2007 10:17 AM

Maybe that starter relay is bad. Have you checked you have power into it? (yellow lead)

http://www.njfboa.org/forums/attachm...8&d=1189473041

The yellow & the green/white wire should be big. The dk grn one is likely small gauge.

Do you have a test light?
http://www.autoelectric.ru/autoalarm.../tsp-550-8.gif

If not, go down to the NAPA by the train station & get one.

89CamaroRS 09-17-2007 11:03 AM

the large gauge dark green going to the pass key decoder module would be the vats signal correct? Should i try grounding that wire to bypass VATS?

and no, i dont have a test light. i'll grab one today.

PolarBear 09-17-2007 11:05 AM

Quote:

Originally Posted by 89CamaroRS (Post 379659)
the large gauge dark green going to the pass key decoder module would be the vats signal correct? Should i try grounding that wire to bypass VATS?

That was what I was trying to convey. Maybe you grounded the wrong wire?

89CamaroRS 09-17-2007 12:02 PM

Quote:

Originally Posted by scooter (Post 379660)
That was what I was trying to convey. Maybe you grounded the wrong wire?

sorry, i had the striped green reversed with the dk green. I grounded the VATS wire already. Didn't help. I have the whole relay itself on order. I'll pick it up tomorrow and see what happens.

89CamaroRS 09-17-2007 12:12 PM

Could i safely bypass the relay just to see if that's the problem? Connect that yellow lead to the dk green that runs into the nss and try the key?

PolarBear 09-17-2007 12:16 PM

Quote:

Originally Posted by 89CamaroRS (Post 379698)
Could i safely bypass the relay just to see if that's the problem? Connect that yellow lead to the dk green that runs into the nss and try the key?

Yes you can try that. I think Bonzo said he would just remove the relay completely, he may have said in person when we were thinking of solutions to your issue.

89CamaroRS 09-17-2007 12:27 PM

Just tried it once with each of the yellow wires connected to the green w/stripe. Didn't work. Does that eliminate the possibility of the relay being the problem then?

PolarBear 09-17-2007 12:33 PM

Quote:

Originally Posted by 89CamaroRS (Post 379708)
Just tried it once with each of the yellow wires connected to the green w/stripe. Didn't work. Does that eliminate the possibility of the relay being the problem then?

Probably. I am thinking starter switch on the column now, but like Scott said you should really see if the yellow wire has voltage. Could be an open fusable link or something, that would be the black part of the schematic on the red wire.


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