5.0 Idle issues

[gadget73]

Looks like a relay socket, but offhand I don't know what it might be for. Possibly check oil level? I think that has a relay in the circuit and its somewhere under that area of the dashboard.


if you're having issues with brake light switches melting you can put a relay in there to unload it. I've never replaced one personally, its one of the tiny handful of things that somehow has never given me any shit on my car.

https://www.lincolnsonline.com/tech/00114.html

written for a newer one, but same idea

[monotonorobo]

Never mind I replaced it, it was hard to get out because the connector fried the last one and it got stuck inside of it. But what’s this connector for? I found it unplugged.

[monotonorobo]

I’ll look into tomorrow morning. Are they known for getting stuck? And how would I go about fixing it? I’ve also got a spare TPS that I haven’t done anything with yet so I’ll check and see what it does.

[gadget73]

under the dash, attached to the brake pedal. I seem to remember its got a funny clip that holds it in place.

bad TPS could definitely kick the WOT relay.

[monotonorobo]

2 things:

Brake lights won’t shut off, so I unplugged the battery and will hook it back up in the morning to see what happens. Where is the brake light switch in the 89?

Alright, I can’t remember the pressures because I did it a few weeks ago, but it was cutting out just fine. I’ve paid more attention to the issue and realized that it would cut out and stay off until I turn the car off after a while only if the throttle goes past a certain threshold, so im thinking the TPS is tripping the WOT relay. I still got the intermittent TPS issue that I haven’t fixed because it wasn’t hurting anything expect maybe a bit of my gas mileage till now.

[monotonorobo]

Oh I was talking about vacuuming air out of the lines connecting the gauges to the ports, but I understand

[gadget73]

If there is refrigerant in the system now you don't need to vacuum anything. If you need to add some, just open the valve on the refrigerant and burp a bit through the lines before connecting them to the car. The pressure in the system will keep any air in the lines from getting in, and if you purge them with refrigerant before adding it won't push air in either.

[monotonorobo]

You dont need any pump to use manifold gauges, or even to add refrigerant.

You would hook the pump up to the service port (yellow line) to pull a vacuum on a system once refrigerant is either removed or starting with a new empty system.

The gauges can go onto the car just fine without any vacuum pump.

I thought I would have to vacuum the air out of the lines first? Was I mistaken? If not then I can just check tomorrow since I still own the gauges. I also don’t think refrigerant is low either since this is the only time it has happened

[sly]

+1 gauges help figure things out. If it's freezing up, there's probably not enough refrigerant in the system.

[87gtVIC]

You dont need any pump to use manifold gauges, or even to add refrigerant.

You would hook the pump up to the service port (yellow line) to pull a vacuum on a system once refrigerant is either removed or starting with a new empty system.

The gauges can go onto the car just fine without any vacuum pump.

[monotonorobo]

You’re right, I won’t blindly mess with it. I still got one of those shitty Venturi pumps but it should be able to pull enough vacuum to suck the air out of the lines. I also know someone who has the same pump i returned so I could go scoop
that up from too.

[gadget73]

If you don't know the pressures you can't diagnose anything. I would not touch that switch without a pressure gauge.

[monotonorobo]

I can’t hook up the manifold gauges rn because I returned the pump After I used it. Outside air temp right now is 82 with 57% humidity. The day I took the video I sent it was somewhere around 75.
i also didnt mess with the switch yet I’ll dial it back some when I get home

[gadget73]

What are you seeing on the manifold gauges, and whats the outside air temp?

[monotonorobo]

Just checked something out, I turned the car on and let the ac for a few seconds and it was ice cold extremely fast, so I guess I have it set too low.