Hello i own a 1991 LS400 with 53k, i was just woundering how good fo these engines and trannys on these cars run and if there are any common mechanical problems with these cars, Thanx

 

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Power steering pump leak unto the alternator killing it, that's something to look out for.

Otherwise they go almost forever.

 

www.lexls.com

 

https://www.clublexus.com/forums/sho...=common+issues
https://www.clublexus.com/forums/sho...=common+issues
https://www.clublexus.com/forums/sho...=common+issues
https://www.clublexus.com/forums/sho...=common+issues
https://www.clublexus.com/forums/sho...=common+issues

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Right now my 1991 LS400 has 53k on it i was woundering what i should change on it it, because i dont know if the last owner did any maintanance on it, i was thinking of changing the differential oil, and the tranny oil, anyhting else that i need, feedback would be appreciated, thanx

 

Nevermind.

 

You can check the tranny fluid to verify it is a bright red. If not, change it.

With the differential, I'd probably go ahead and change it. This seems to be a neglected fluid. When I ask friends (non car nuts), they give me a blank stare so I conclude they aren't even aware.

PS Fluid, easy check and if it's a hint of dark/cloudy, change it. One thing is if there is a tight seal at the inlet, outlet houses to the pump, pulling them off to drain the reservoir may begin fluid migration out of that area. That was my experience and I'll need to install new hoses to avoid excessive PS fluid from getting on the alternator.

Depending on your climate, some of the suspension bushings may be showing their age and have hardened or cracked. If the car feels "tight", no worries. In similar, struts may also be aging possibly a chnage there too.

Then there is the LCD issue which is stickied at the top of the forum. Just an FYI.

Otherwise, anything else, just ask.

 

That's a problem I got on my 93, I'll be getting that fixed soon.