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It's a 1992 LS400.

I recently got a guy to clean the throttle body on my LS400. However when he was putting it all back together he messed something up. One of the things that he messed up was throwing out a plastic gasket/plastic plug type thing that is attached to the throttle body. We found half of it and kind of glued it in there as it wouldn't stay in on it's own. Does anyone know what this piece is called? Are there any other reasons that the car won't start after a trottle body cleaning. It trys to start but just never kicks in. It worked 100% before this. Thank You.

I was having the Serpentine belt replaced on my car & the guy doing it noticed that one of the electric wire things was quite frayed as it had been touching off the belt. I was wondering if anyone might know the name/part number of this part? Also, are there any instructions out there to replace this? Finally, he also thought that this might be a cause of my 'Trac Off' engine light been on. Does that sound plausible? Thank You for any help!

Hi, My 92 LS 400 has been just put back on the road after a year and a half of sitting idle in the one spot, in the Texas heat. The passenger side mirrors no longer move in any direction. Both of them. I was wondering would this be a fuse or motor problem & how best to diagnose it? Thank You.

Yes Keykeeper, This is the method. Sorry for delay in replying, I had to go out of town so haven't looked at the car since I posted.

Thanks Billy. "If there is no code in the engine system there may be a short in ecu, trac ecu, or the harness." How would I find out if there is a code in the engine system? I thought that Code 51 was the code, but is there a different way to find out the code in the engine system? Thanks again.

My 92 LS400 had been sitting for nearly 2 years undriven. When I returned I replaced the battery and it started straight up. There was about a quarter of a tank of Gas in it that had not been treated with any preserver. I added some fuel additive (Seafoam) and changed the oil & oil filter. I then drove it until the tank was almost empty (yellow Light on) and put $10 of the cheapest gas in Austin (So Stupid!). Almost Straight away the Check Engine light came on with the Trac off light. I pulled the code this morning and got a Code 51. (Problem in engine control system) This is what I've found out so far: CODE 51: ENGINE MALFUNCTION DETECTION CIRCUIT Circuit Description If the trouble (trouble which causes CHECK engine warning light to light up) occurs in the engine control system, this circuit senses the trouble and prohibits TRAC control. Diagnosis Problem has occurred in engine (CHECK engine warning light lights up) when engine RPM is 500 RPM or more. Trouble Area Engine control system. Harness or connector between ABS & TRAC ECU and engine & ECT ECU. (Short in TR5 harness). Diagnostic Chart Check the diagnostic code for the engine. If codes exist, repair engine control system according to the code output. If CHECK engine warning light remains ON but no codes exist, check for short in all the harness and ECU connected to CHECK Engine warning light. So, this all sounds very complicated & a little contradictory. If anyone could put in layman terms what this means, & what is the best way to rectify this issue, I'd really appreciate it. Thank you all.

PS. Have not changed the fuel filter yet & had put in some fuel additive (Seafoam) to clean the system. The check engine light came on after I put some cheap gas (got excited using Gasbuddy!) which was probably a stupid thing to do.

Ok guys, was able to pull the code for the check engine light. the code is 5,1. The Trac light blinked 5 times, then a pause then it blinked once. lexls.com says"51 - Problem in engine control system". Any idea what this might be? Thanks guys.

I would love to attempt it on my own but would be afraid I'd be half way through & something catastrophic would go wrong! Seriously though, would love to join someone who knew what they were doing & help out/ learn that way. Keykeeper, would this maybe be an option? I'll try to pull that code & post back.

Hi Guys, I live in the Austin Texas area and was wondering if prehaps any other members might live here & if so do they work on their own cars? I've just returned to Austin after a 2 1/2 year hiatus and my 1992 LS 400 has been sitting idle all that time. I have it back on the road now but it's in need of a good service, with the check engine light just after coming on. My old mechanic was a car enthusiast whose wife owned the same car, so he knew it inside & out. I always felt very assured that everything he was telling me was 100%, and he was great at the preventative stuff. Unfortunately he's not around any more. So, I was wondering, was there maybe another LS enthusiast who might live in the Austin area and be interested in doing some service work on the side for some extra cash?? If anyone knows anyone who you'd recommend, I'd appreciate that too. Thanks Guys! Work to be done: Change out drive belt Drain & top up transmission fluid Tighten hand brake cable Clean the throttle body Change Spark plugs & Wires if needed. Any other mechanical work they see fit to carry out after checking the car out. Finally, the check engine light has just come on recently, so they would probably need access to reader to pull the code as the car is a 1992 model. Thanks Again Guys!

Hey Guys, Two and a half years ago I had to return to europe for family reasons. It all happened in a hurry & I was forced to leave my 92 LS400 with a friend. It was last started 18 months ago and driven for about 20 miles, before that off and on every couple of months. I'm returning to the States next month and was wondering what should I include in the service. My friend tried to start it recently but the battery was dead, although some of the lights came on initially, there was just not enough juice to crank the engine. I'm going to recharge or replace as needed. The car has been stored outside in Austin, Texas, just to give an idea on the temperatures it has been exposed to. I was going to get all the filters and fluids changed (oil, transmission, coolant) as well as check the tires. Does anyone have any advice about a car that has been in storage like mine and putting it back on the road? Thanks guys. PS. Before I left the car had been putting out some black/grey smoke, and at he time everything pointed to the Trottle body needing cleaning, so I was going to do that as well. http://www.lexls.com/tutorials/EFI/throttlebody.html

Timing belt last changed on 120k

No Engine codes....

There's such a thing as a transmission filter?