LS - 1st and 2nd Gen (1990-2000) Discussion topics related to the 1990 - 2000 Lexus LS400

ls 400 air suspension questions

Old 12-13-11, 02:49 PM
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v_eye_pee
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Default ls 400 air suspension questions

first thing. i replaced the left rear strut due to the all common issue. now car will raise up. if i put it on high, car will rise.. now heres the funny part. when i put it back on normal, car will not lower back down. is this due to a height sensor issue or dump valve issue?

second, im very good with aftermarket air. is it possible, or has anyone ever disconnected the factory lines from the factory air struts, and installed their own air managment? (compressor, tank, valves, switches)?

thank u for all who please answer and help me out.
Old 12-13-11, 03:22 PM
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PK_Celsior
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Originally Posted by v_eye_pee
first thing. i replaced the left rear strut due to the all common issue. now car will raise up. if i put it on high, car will rise.. now heres the funny part. when i put it back on normal, car will not lower back down. is this due to a height sensor issue or dump valve issue?

second, im very good with aftermarket air. is it possible, or has anyone ever disconnected the factory lines from the factory air struts, and installed their own air managment? (compressor, tank, valves, switches)?

thank u for all who please answer and help me out.
might be a dump valve issue! what year is your LS400?

yes it is possible to disconnect the factory lines and remove the factory air struts and install other forms of suspension. just make sure you either pull out the fuse or turn off the original air pump so it doesn't burn out unless your decide to remove it anyways.
Old 12-13-11, 03:24 PM
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its a 91.. and no i meant can i run my own setup to the factory air struts?
Old 12-13-11, 03:46 PM
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PureDrifter
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yeah but not or long. regardless of the management the factory bags and shocks die quickly when run outside their optimal parameters, like when you drive around low.
Old 12-13-11, 03:51 PM
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yeah i dont wanna drive around low. except for being parked. i jus wanna be able to raise it and lower it. i have a data systems controller but now that there is a dumping issue im not in the mood to trouble shoot everything. i need to locate exactly what makes the car lower. <--that info would be nice to.
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