Probably a stupid question, but.... - LotusTalk - The Lotus Cars Community
 
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post #1 of 5 (permalink) Old 05-10-2018, 05:50 AM Thread Starter
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Probably a stupid question, but....

...what happens if I just remove this (and leave the solenoid hooked up and in place?)


Understeer is when you hit the wall front first.
Oversteer is when you hit the wall rear first.
Horsepower is how fast you go when you hit the wall.
Torque is how far you take the wall with you.

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post #2 of 5 (permalink) Old 05-10-2018, 07:31 AM
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Although I have not seen the charcoal vacuum canister on our Elise, that sure looks like one. I have experience with this system on other vehicles enough to know that when the intake manifold vacuum is high (during idle) the vacuum solenoid is closed. It opens under higher RPM's by the ECU which is monitoring (vapor) flow back from the gas tank through an in line flow sensor. This is all balanced by the gas cap seal and the fresh air inlet (on some vehicles, also under solenoid valve control). The fuel vapor recovery system is throttling evaporated gasoline into the intake manifold with the charcoal canister catching any droplets or impurities. Toyota also employs a fuel tank vapor pressure sensor as part of this system. If you bypass it, you may run rich without the ECU's ability to control it. I do know that if the ECU doesn't see flow when the solenoid is open and none when closed, you will throw a C E L (check engine light) within a few drive cycles. There is a list of different error codes that can originate. I hope this helps you.

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post #3 of 5 (permalink) Old 05-10-2018, 08:10 AM Thread Starter
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Thanks. I will have to to some testing to see if it can be removed all togheter (leaving the rear valve with its sensor in place) or if I should get some hoses, hose clamps and just reposition it...
I want the real estate for my battery.....

Understeer is when you hit the wall front first.
Oversteer is when you hit the wall rear first.
Horsepower is how fast you go when you hit the wall.
Torque is how far you take the wall with you.

Visit my photo gallery
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post #4 of 5 (permalink) Old 05-10-2018, 10:29 AM Thread Starter
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One more question.... Is this system pressurized in any way, or can I cut the couplings off the hoses and extend them with, say, duct tape?

Understeer is when you hit the wall front first.
Oversteer is when you hit the wall rear first.
Horsepower is how fast you go when you hit the wall.
Torque is how far you take the wall with you.

Visit my photo gallery
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post #5 of 5 (permalink) Old 05-10-2018, 11:21 AM
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