91 Cougar LS 5.0 Teardown and Build

[Generalee0527]

Fantastic work! It's inspiration for me to get going on mine. Thanks for sharing.

Keep your eye on that trans line fitting. I had one like that and after a while the hose slipped off even with a flare on it. White smoke in my rearview mirror gave it away.

White smoke if you are lucky and watching your 6. Me however get to 4-way stop and then wonder what the hell when it doesn't want to go when revved to the moon. Yep. I learned they sell these adapter that arre barbed and they have a mechanical coupling w/ ferrule that tightens on the steel line and they are/were like $10 bucks in 2002.

 

[XR7-4.6]

View attachment 13941
I'm missing something that goes in this hole and I think it's for the vac lines that go to the a/c. Anyone have a pic of what I'm looking for?

That’s the passthrough for the ABS wiring (and ARC on early XR7s/SCs). If your car doesn’t have them there should just be a rubber plug there.

 

[Zep5.0]

That’s the passthrough for the ABS wiring (and ARC on early XR7s/SCs). If your car doesn’t have them there should just be a rubber plug there.

Ok, at least I'm not going crazy. I do wonder of the vacuum lines should go there as I didn't see anywhere else to get the to the HVAC box like @theterminator93 terminator said

 

[Zep5.0]

I need some help, I think I've said before electrical is not my strong suit. I'm needing to get my radiator fan wired in, and know I need a controller, or relays. My Holley Terminator X has 2 wires for fan signal(ground type), so I'm thinking relay is the better route. It's one fan, but has 2 speeds and therefore 2 power wires. Power one for low speed, and then both for high speed. So my question is; can I run 2 relays, with one for low speed, set to 185°(thermostat temp), and then the other to power the second wire at say 195°? That then would be high speed on my fan. Then second question; do I add a third relay for the A/C trigger, or do I just add that trigger to the low speed relay?

 

[dDUBb]

The two speed fan is throwing me off .. does it use both power wires for high speed; or one wire for each speed ( dual windings .. like the factory electric fan ) .. the Term X can control the fan(s) and probably has adjustable setpoints .. but it more than likely switches one trigger off between speeds and won't power two relays at the same time ( if thats how your fan needs to be wired. )

 

[Zep5.0]

The two speed fan is throwing me off .. does it use both power wires for high speed; or one wire for each speed ( dual windings .. like the factory electric fan ) .. the Term X can control the fan(s) and probably has adjustable setpoints .. but it more than likely switches one trigger off between speeds and won't power two relays at the same time ( if thats how your fan needs to be wired. )

Yes, both power wires to get high speed.

And I think the 2 wires from the holley are separate to run 2 fans.

 

[MadMikeyL]

Wire it up with 2 relays, one for each speed. Use the Holley to control the ground side of the relay, and have each relay provide power, with both fans sharing a constant ground. For the AC, I would use a 3rd relay, triggered by the compressor clutch, and have that relay provide an alternate ground to the low speed fan relay. So when the compressor is on, it grounds out the low speed fan relay, which will turn on the low speed fan regardless of what the Holley is doing, and vice versa.

 

[Zep5.0]

Wire it up with 2 relays, one for each speed. Use the Holley to control the ground side of the relay, and have each relay provide power, with both fans sharing a constant ground. For the AC, I would use a 3rd relay, triggered by the compressor clutch, and have that relay provide an alternate ground to the low speed fan relay. So when the compressor is on, it grounds out the low speed fan relay, which will turn on the low speed fan regardless of what the Holley is doing, and vice versa.

Ok, sounds good, thanks!

 

[Grog6]

What actual fan are you using? The stock mn12 fan will run on the 40A bosch relays fine; a Mark fan will eat those in short order.

 

[Zep5.0]

What actual fan are you using? The stock mn12 fan will run on the 40A bosch relays fine; a Mark fan will eat those in short order.

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The stock 4.6 fan I had wouldn't quite fit my radiator to water pump clearance on my 5.0. thus the aftermarket fan.