Link

Thanks guyz.

Now I have more insights.

Hello everyone.

I have a 92 LS400,when my car stops and I turn the steering(left&right),whatever I put the transmission on P,N or D,the idle goes a little bit higher,around 100-150rpm. It never happened before.

Otherwise everything is fine.

Any idea?

Idler bearing problem?

Thanks

Please get back to me if you can help my car is off the road b/c of this problem. you can reply here or email me at  nyinfamous2k2@aol.com . thanks i appreciate it .

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Well, it was a nice sunny weekend and I decided to get under the hood. My intention was to just replace the spark plugs and see if that fixed the problem. Once I opened the covers, it was evident that I was duped some 4 years ago! I had the plugs and cables changed the last time around. I found that I still had the original cables from 1993 in the car. Needless to say, I snapped two of those just trying to pull them off the plugs. The plugs still looked very clean which tells me that everything else is running good in cylinders.

Special tools needed: You need a 5/8th inch deep (6" deep) spark plug socket (had the rubber catch to snugly grasp the plug) to do this job right. Also, use dielectric grease at the cable contacts. Check plugs for 0.044 inch gap. A long slender pair of nose pliers will be handy if you snap the cable end on the plug. You will have to pull the broken piece off before you can reach the bottom of the plug with your socket.

All said and done - the hesitation, jerking, shuddering is all gone now. The engine runs smooth. Conclusion -- old and bad spark plug cables was the likely cause.

I did not have the patience to mail order NGK-Iridum and Vitek cables. I went with the local AC Delco after market cables, autolite double platinum plugs from the local parts shop. Will see how long these last. While I was at it, I did my annual Mobil 1 synthetic oil change. I change engine oil every 15 to 20 thousand miles, have always used synthetic oil only. Every year the old oil flows out smooth and clean with good viscosity still intact.

This is one of my first LS400s (1994) and I have now over 200K miles on it. Still runs like a champ! As you can see, I am pushing the limits of sanity here with oil change etc. This engine is very well designed. The less you muck with it, the longer it will last!

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Congrats.Good for your car.

I finally got my car fixed.  Since I got a lot of work done, it probably won't help those who were looking for what the cause may have been for shuddering.  I believe it was probably spark plugs and wires because plugs were changed 100k miles ago and with 230k miles, wires were never changed.

I got the following things done by an independent mechanic in Maryland:

Spark plugs (NKG Iridium), spark plug wires (vitek), fuel injection cleaned, throttle body cleaned.  Timing belt, water pump, heater control valve, thermostat ignition rotor & distribution cap replaced.  And also got the complete coolant flush.

Needless to say the car runs like new and I'm loving it!!!!!!

If anyone in Maryland is looking for an independent mechanic to do this kind of work on their lexus let me know.  I also got the whole front and rear suspension done by this guy 4 months back and I'm very satisfied by his work.

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Hey PK_Lex,as you said,how much you spent for the labor?And how long it gonna take?2hours?3hours?

Thanks

That's bad, dealer couldn't like this.

As my experience,for a oil change,I had to wait 2 hours.

And yes,dealer is very expensive.

Somebody told me that the 4200K Philips is the best,is that true?

welcome to the club link 

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Thank you

well in that case if someone finds the crystal lights for sale then it be appreciated if you could post it on here because im interested in them to i planned on seeing if i can get the second layer lense removed from mine because it seems likes theres 2 layers on the lights but hey who knos 

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I'll try to find it out.

Because I want to add the HID and new headlights at the same time.

Congrats.

Yes,xenon bulbs will make your car perfect.

I'm planning to get the xenon bulbs for my LS400 too,but I'd like to find a set of crystal headlights first.At least,clear.

Looks like I need some tools to do the oil change.

Should be ok with Lexls' website,LOL,I was too lazy before.

You need to make friends with an LS owner in Japan ;), they can find them in the junkyards there.

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Sounds good.

I did some business with Japanese before,maybe they can help.

Thanks Lexls.

Welcome Link!

Doing a LS oil change is similar to other cars, here's how: http://www.lexls.com/tutorials/lubrication/oilchange.html

5w30 is the recommended oil.  The brand is up to you, everyone has their favorite.  Buy 6 liters/quarts.  The exact fill spec is listed in my tutorial.  Very easy job since it's engineered so well.

Many many other first gen LS tutorials on my website.

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Thank you very much.

Your website is wonderful.

Thanks again.

if anyone ever finds out where to get those headlights pm me please please i need to start adding stuff to my lexus

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Same here,I really want to have a set of crystal headlights like the silver one.

Welcome, welcome. i to am new here. I have been here only for a couple months but before this I have always been on BMW forums. I love these forums. So helpful and fun. It is the first thing I do when I turn on my computer. The headlights I am not too sure about. Here is a great link for Lexus DIY. This link will save you a ton of $$$. I plan to use this site when I change the coolant in our 96.

Good luck and welcome!

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Thank you.

Hello everyone.I'm new to here.

Got few questions about the LS400.

I have a 92 LS400,does anyone has any idea about the headlight?

I'd like to change the OEM headlight to the crystal headlight.So where I can get it?

I used be doing the engine oil change with dealer,but really tired to wait,finally,I want to change the engine oil by myself.So what kind of engine oil should I take both in summer and winter?How many litres each time?

Thanks