Cascade Crew

[chevymad]

Wow.. timetable? 2025? Gm could have a new motor come out much better then the LS and you'll have to swap that in next.

Kidding with you. I've done nothing to my 74 either.

[QwkTrip]

The project is the journey. What are you supposed to do with a car that is finished?

[QwkTrip]

FYI - the lower radiator hose clamps from Chevy dealer are way too small. Not sure what happened in their parts system but the clamp won't even go over the pump fitting, let alone the hose. I looked up spring clamps in the Caterpillar system and found part number 140-6364. Only $2.50 each from your local dealer.

[aaron_sK]

Spring clamps are fine in a wide-open engine bay like an old truck or something but god are they a pain in your average close-quarter installs.

I prefer BMW clamps. No joke.

They install like a traditional worm gear clamp but are better in every conceivable way.

[QwkTrip]

I think you'tre talking about constant tension claps? I can get you part numbers on those too, and probably 10x cheaper than BMW.

[QwkTrip]

It would REALLY help if somebody could share pinouts for C207 for my exact vehicle. 1989 Firebird 'S' VIN code. Things just aren't the same as other C207 diagrams I have found.

This is what I have been able to verify using continuity checks. You can see I haven't found my clutch safety switch.

A. BRN. Can't verify what this is.
B. PNK/BLK. INJ fuse, switched power
C. BRN/WHT. MIL ground --> connect to R46
D. BRN. FAN fuse
E. WHT/BLK. Can't verify what this is.
F. PNK/BLK ENG-IGN fuse, switched power
G. PNK/BLK. GAGES fuse, switched power
H. TAN/BLK. Can't verify what this is.
J. ORG. Datalink connector (3rd gen)
K. BRN. VSS buffer box --> connect to R50
L. BLU. VATS box
M. BLK/WHT. MAF relay ground (?), Does VSS depend on this ground?
N. empty
P. empty
R. PPL/WHT. CRANK fuse, cold start injector

[aaron_sK]

[aaron_sK]

You can't find the clutch safety because it's over here on C100:

[QwkTrip]

I found that too at austinthirdgen. Problem is it is Camaro and not the same as my Firebird. Hoping somebody can locate the Firebird schematic.

[Twilightoptics]

What original engine? Vin code doesn't help with most vehicle look ups for this stuff. Is C207 an ECM connector?


Ahh I see it's 2.8 crap. But where is the connector?

[QwkTrip]

2.8L

C207 is a connector in passenger side dash that has several wires that go out to the engine bay through passenger kick panel.

[chevymad]

Ran into this same issue with Flea's car. The pinouts for these firewall connectors vary with year, model, engine just about anything. Good luck

[Twilightoptics]

A. BRN. Can't verify what this is. Pin C ALDL Manual Trans Only, spliced from Air Select Valve and Air Select Valve Control ECM C2/C2
B. PNK/BLK. INJ fuse, switched power
C. BRN/WHT. MIL ground --> connect to R46
D. BRN. FAN fuse
E. WHT/BLK. Can't verify what this is.
F. PNK/BLK ENG-IGN fuse, switched power
G. PNK/BLK. GAGES fuse, switched power
H. TAN/BLK. Can't verify what this is. ALDL Pin F/TCC Solenoid or Shift Indicator in Cluster.
J. ORG. Datalink connector (3rd gen)
K. BRN. VSS buffer box --> connect to R50
L. BLU. VATS box
M. BLK/WHT. MAF relay ground (?), Does VSS depend on this ground? Vehicle Speed Buffer Ground from Instrument Cluster.
N. empty
P. empty
R. PPL/WHT. CRANK fuse, cold start injector

[QwkTrip]

A and H don't go to the ALDL. I've checked that already because I thought it should too.

Looks like I can eliminate M because buffer box will be disconnected. I was wondering about that.

[QwkTrip]

This is the post that has me confused. http://www.thirdgen.org/techboard/posts/ltx-lsx/544768-ls1-harness-start-finish/4303990-post7.html

Pocket is grounding B32 and B33 through a clutch position switch. I looked at the 4th gen schematic and there is indeed a clutch position switch, and this is separate from the clutch starter enable switch.

So now I think I see why I'm confused.... I don't have a clutch position switch. Should I just run B32 straight to ground all the time? Don't see why I need the switch since starter won't crank without the clutch pushing on the starter interlock switch, and fuel won't inject without cranking speed.

[chevymad]

Are you using a cable TB or electric? The electric TB's use the pcm for cruise. This would need a clutch switch to disable cruise.

[QwkTrip]

Cable driven. And I don't have cruise. My car is pretty basic.

[chevymad]

Just giving you a possible reason the LS had a clutch position switch.

[QwkTrip]

Well, I hope I'm right about this because this is what I'm about to do.

C207
* Remove all engine side wiring because I don't need any of the switched power sources from C207 since I'm adding an underhood fuse block for the engine.
* Leave all interior side wiring in place. Make the following connections:
1. Engine PCM R46 connect to C207 Pin C (MIL lamp ground)
2. Engine PCM R50 connect to C207 Pin K (speedo signal)

Speedometer
* Remove the VSS buffer box from car.
* Take the loose connectors and jump terminals F and C. F is wired directly to C207 Pin K where I brought in the speedo signal from engine PCM. C is the output to speedometer in the gage pod.

[QwkTrip]

More proof my engine is set too far back. This is what happens when LS coil pack hits the AC case on firewall. Put a gash all the way through. I cut off the offending stud that holds coil beauty cover and now it's a bolt that can't cause more harm. It took me a while, but I finally found a replacement case from a low mile car. If I ever get bored, I might try to repair the fiberglass but I'm not that bored yet.

I've got to do something about that lousy BMR K-member. Engine is in wrong spot, tires aren't centered under car, and it's just plain flimsy.



Stud cut off and a spot of paint to keep the bare metal from rusting.


In other news, I got myself a hatch release switch and put it in the dash. I'll be using that as a momentary switch for the roll control so I can do fantastic smokey burnouts. Three day weekend ahead and hoping to make some progress!