pulling motor have questions

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pulling motor have questions

September 04, 2009, 03:20:57 PM

there are afew parts i hope im not going to need to hang onto like these. The bulb and box what are they and do i need them?

pulling motor have questions

Reply #1 – September 04, 2009, 05:02:24 PM

yes, pretty sure you need them
the bulb is the vac tank which keeps constant vac going to everything.

the other is the fuel purge canister

pulling motor have questions

Reply #2 – September 04, 2009, 11:18:37 PM

Actually, that ball is the Cruise control servo. That's the cable coming out the left side of it, and it should be going up to the throttle linkage. That looks like the left side of the car, and that ball is mounted in the cavity of the fender well, right? VRES is mounted inside the engine bay. The primary duty of VRES is to the EGR to keep it from doing weird things as the throttle is opened.

Right idea, wrong name on the other. That is the Evaporative Recovery Cannister. Captures fuel vapors from the tank, and when the engine is warm enough, is vented into the intake by some means. Depending on the age of the vehicle, it may be electronically controlled by the EEC, or it may just be a thermostatically controlled vacuum valve. I'm leaning toward the latter, because I have two 86's and both use a thermal vacuum valve. Ya know that funky temperature sensor that vacuum lines hooked to? That would be the valve I'm talking about. Ford did away with that valve, and just used the ECT input to trigger an output to a relay/solenoid on later models. My F-150 has the electronic version, a small solenoid valve in the line between the throttle body and the cannister. I also noticed that the vented plug is missing on yours. I don't feel so bad now. It's missing on my blue 86 as well, AND on my F-150. I have to wonder WHY it's missing, though. What could have popped it off there? The plug is not available, and you don't even wanna think about a new evap recovery cannister.

If you don't have emissions inspections, you'll do fine without the vapor recovery cannister. However, you'll need to plug the line from the fuel tank, preferrably back at the fuel tank. Expect some pressure to build in the tank as the fuel warms and expands too. You WILL smell gasoline around the car if you don't cap that line, and fuel vapors are a lot more dangerous than liquid fuel.

The CC Servo? That's up to you. I like cruise control for highway driving. I'm spoilt, and it has probably saved me from a LOT of speeding tickets. If you're going to delete that, you may as well remove the electronics under the dash too, and consider the switches in the steering wheel.

The "vac tank" that daminc was referring to would be VRES, and normally looks like a fruit juice can. The CC Servo is mounted inside it's own reservoir, but on my F-150, CC has an additional separate reservoir. There should be a small one near the MAP sensor, under the coolant reservoir, which serves as a filter to smooth vacuum pulses from the intake. MAP sensors do NOT like pulsing vacuum. Think about the way a cruise control works. It works on intake manifold vacuum to pull the throttle open. When the throttle opens, what happens to vacuum? It decreases. This would cause CC to fade as you climbed a long hill and it needed to open the throttle more. If you get a significant error in the reference and the position of the servo, CC will just turn itself off. (FAIL SAFE). Cruise Control is little more than a closed loop speed regulator. It's the one subsystem of the car that I DO understand completely. (I'm an electrical engineer in industrial services).

pulling motor have questions

Reply #3 – September 05, 2009, 07:36:53 AM

The cruise servo is on the drivers side.

pulling motor have questions

Reply #4 – September 05, 2009, 09:15:00 AM

Quote from: daminc;289970

the cruise servo is on the drivers side.

x2.

pulling motor have questions

Reply #5 – September 05, 2009, 08:56:41 PM

Oops. Ok so I was having a problem determining which side of the car I was looking at in that photo. That ball looks JUST like the CC servo on my F-150. At least I got the part about it being on the DS right. I did say the left fender, didn't I?

Vin, you got photos of your sport on here somewhere? I'd like to see what that Mach I chin strap looks like. For that matter, I'd like to see what the whole car looks like. That must be one PURTY engine.

pulling motor have questions

Reply #6 – September 06, 2009, 08:09:45 AM

I think you can just look for him with a people search on photobucket. I believe he uses the same name.

pulling motor have questions

Reply #7 – September 07, 2009, 06:41:33 PM

i see what about this? The hard line behind the valve cover. I think i have see these plugged before. doesnt it just go down to the cat? I dont have a cat anymore. Bolts to the upper intake.