LS IV HUNNID Posted March 27, 2015 Share Posted March 27, 2015 just bought a 91 ls400 60k miles 1900$ my front air suspension was starting to sag on the driver side when the car is off......... normally it would restore to full ride height when i started it but now it wont........... was also wandering if the 1st gen and 2nd gen suspension is compatable? what are some preventive maintenance for the ls400? Thanks guys! Quote Link to comment Share on other sites More sharing options...
VBdenny Posted March 27, 2015 Share Posted March 27, 2015 Some of the early LS400 cars had air suspension. Probably fantastic when new but like any other bag, they eventually leak. I know people have switched to conventional but not sure what it encompasses. I do know I often see 1990> LS400's in the junkyard so I would think the parts are readily available and inexpensive. Of course you would also learn how to remove the parts on a junk car, not your own. If you bought that 91 with only 60,000 miles for $1900, you about stole it anyway. Nice find. Quote Link to comment Share on other sites More sharing options...
LS IV HUNNID Posted March 27, 2015 Author Share Posted March 27, 2015 I have put some more thought into it and am think converting to spring for the liability factor........ any body of ajustable coilovers that would keep yhe luxury ride? Quote Link to comment Share on other sites More sharing options...
LSPaul Posted March 28, 2015 Share Posted March 28, 2015 Front or rear driver's side? On the early ('90-94 cars) Rear driver's side would be matter of finding a used air strut for that corner. Fronts (right/left) interchange; rears are specific to that corner. As for the conversion kits out there, probably the best bet for the proper Lexus ride would be to find a set of used, low-mile OEM strut assemblies from a non-air ride car. As far as aftermarket stuff goes: In my experience, the Strutmasters setup has a slightly high ride height (okay, it feels like about the equivalent of the air setup on 'high'). They ride a bit firmer (supposedly their springs are made by Eibach), but I'm good with that. The rear shock inserts on mine failed quickly, but KYB Excel Gs have been a good pairing with the Strutmaster springs. FWIW, I recently came across a full set of the Strutmaster replacement struts in a pick-a-part yard in central Iowa on a '92 LS. Suncore's springs feel a bit on the wimpy side, but are probably a closer match to the OE ride. If it were me, I'd check car-part.com and the usual auction site for a used air strut and change it out. Paul '93 LS and '94 LS 5th Anniversary Quote Link to comment Share on other sites More sharing options...
sha4000 Posted March 28, 2015 Share Posted March 28, 2015 I have to agree with paul on the www.car-part.com search. Quote Link to comment Share on other sites More sharing options...
sha4000 Posted March 28, 2015 Share Posted March 28, 2015 i deleted your other thread since your basically asking the same question. Quote Link to comment Share on other sites More sharing options...
LS IV HUNNID Posted March 28, 2015 Author Share Posted March 28, 2015 I just dknt wat the air suspension to crap out when im on the road is the a limphome mode for them? Quote Link to comment Share on other sites More sharing options...
LSPaul Posted March 28, 2015 Share Posted March 28, 2015 If it's a matter of a leaking or failing air bag (which sounds like your case), no. FWIW, a decent used air strut will typically run $100-150, depending on condition, and the fronts are quite easy to change out. If it's an electronic issue with the suspension, yes, sorta. Paul Quote Link to comment Share on other sites More sharing options...
sha4000 Posted March 28, 2015 Share Posted March 28, 2015 Being that your in Hawaii getting parts might be an issue as far as cost. Any used air strut you buy will most likely be on borrowed time. You don't want to buy one and then another one goes out. That can add up quickly. I would just swap them out for coils or spring/shock combo and be done with it. here are some tutorials. http://www.lextreme.com/ascon.htm http://www.clublexus.com/forums/ls400/565592-diy-90-94-ls400-front-air-suspension-removal-air-struts.html conversion kit https://www.arnottindustries.com/part_LEXUS_yid7_pid46.html http://www.strutmasters.com/products/1990-2000-lexus-ls400-4-wheel-air-suspension-conversion-kit-tc14f/ Or you can just go with the stock shock spring combo. There are multiple options. Quote Link to comment Share on other sites More sharing options...
Nate1979 Posted April 1, 2015 Share Posted April 1, 2015 I am also a new Lexus LS400 Owner. It is a 1990 with 180,000 miles on it with only 2 owners. I have a question about the rpms. When I am doing 70 mph the rpms are 2500. I would like to know if thats normal. I am sorry that I hijacked your post but for some reason the video on how to start a topic is not working. Thanks for any advice. Quote Link to comment Share on other sites More sharing options...
VBdenny Posted April 1, 2015 Share Posted April 1, 2015 Hey Nate, no, that is high like in 3rd gear. Check the overdrive button on the transmission shifter. On the other dude in Hawaii with the crapped out air suspension. Go to a junkyard and buy the original suspension out of the same year as yours. They never wear out and you ain't building a watch. Quote Link to comment Share on other sites More sharing options...
Nate1979 Posted April 1, 2015 Share Posted April 1, 2015 Thanks for the info. The bad thing is the overdrive button is the first thing I checked, and its on. I am hoping nothing serious is going on. Have you ever heard of this problem before? Quote Link to comment Share on other sites More sharing options...
Exhaustgases Posted April 2, 2015 Share Posted April 2, 2015 I thought I posted to this thread about a conversion kit? Quote Link to comment Share on other sites More sharing options...
boogieman Posted April 8, 2015 Share Posted April 8, 2015 I changed the air system out on my '95 with Strutmaster units. Both right side bags leaking. Very pleased with the results. Cost was cheaper than replacement components and labor costs. Quote Link to comment Share on other sites More sharing options...
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