Ollie Posted June 28, 2020 Share Posted June 28, 2020 How much of this system can be removed and my 1989 4.0 still run good? What needs to be removed? Plugged? Wires discarded? Ollie Link to comment Share on other sites More sharing options...
cruiser54 Posted June 28, 2020 Share Posted June 28, 2020 None of it harms anything or causes power loss....... Link to comment Share on other sites More sharing options...
JMO413 Posted June 28, 2020 Share Posted June 28, 2020 1 hour ago, cruiser54 said: None of it harms anything or causes power loss....... I have removed it all and can't tell a difference what so ever. Link to comment Share on other sites More sharing options...
ftpiercecracker1 Posted June 29, 2020 Share Posted June 29, 2020 All of it can be removed, but none of it needs to be removed. If you live in Cali you have to have it to pass emissions. I removed everything on mine to help declutter the engine bay. As far as removal, just unplug what there is to unplug electrical and cap whatever vacuum ports need capping. Link to comment Share on other sites More sharing options...
Swampy Posted June 29, 2020 Share Posted June 29, 2020 If its not broken there is no need. I removed mine because the egr solenoid was broken Link to comment Share on other sites More sharing options...
omega_rugal Posted June 29, 2020 Share Posted June 29, 2020 On 6/28/2020 at 9:27 AM, Ollie said: How much of this system can be removed and my 1989 4.0 still run good? all of it, the EGR for instance, remove all components and cap all vacuum hoses that go to it, you can disconnect the EGR valve or remove it and plug the hole... the evap canister is up to you, but beware of gas fumes in summer... Link to comment Share on other sites More sharing options...
Ollie Posted June 29, 2020 Author Share Posted June 29, 2020 Thanks guys.........came out today. It wasn't all hooked up anyway. Having Comanche Fun, Ollie Link to comment Share on other sites More sharing options...
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