20 Most Recent 1999 Lexus LS 400 - Page 7 Questions & Answers

Did U check with the dealer to see if it is at all possible? Some systems are integral parts of the ignition system and cannot be disabled. Others are accessories than can be bypassed. Check it out.

run the fault codes and look for problems in the accelerator position sensor , throttle motor , MAP/VAF sensors.

bad fan relay or temp sensor

Injectors may be faulty.

Is this an automatic or a manual transmission?

Sounds like a bad coil. i would swap the coils to run 2,4,6,and 8 and see if those started to misfire. If 1,3,5,7 still misfire I would do a compression test. Has the timing belt been replaced yet.

You really need this fixed fast for if you have raw fuel coming from your exhaust your catalytic converters must not be working. If they were working they would be running a extremely high temperatures and be a fire hazard. You most likely have damaged exhaust valves causing this problem, a compression test will confirm if this is the case. The other possible causes are bad injectors, coils, spark plugs and ignition timing.

Check battery and connection.

It's located inside the transmission so you'll have to drop the transmission pan for access. The attached document goes over removing the pan and identifies the solenoid. Good luck. http://us.lexusownersclub.com/forums/index.php?app=core&module=attach§ion=attach&attach_id=6901

You could go to youtube.com and search for "Torque Head Bolts". They have a lot of those there. Hope this helps.

Check the Spark Plugs , Leads , Points and Distributor units are serviceable and on fully and correctly. Go to a Motorfactors and buy some Carb cleaner. Take off the Air pipe to the Carburettor and clean the carb as best you can with a piece of cloth , getting rid of residual oil and muck left over the years of use.. Spray the Carb cleaner in and wipe again . Start the engine without replaceing the Air pipe. Use the throttle / Accelerator with a few pumps , it will sound a bit noisey. . Knock the engine off again and refit the Air pipe to the Carburettor. Take it for a spin on a fast road to try and clear the residual stuff from the Carb. You can use some Petrol Additive to help clean the internal bits every few refills of petrol.

Sounds like one of the pulleys is not turning. May be the A/C compressor clutch locked up. Thanks

Shouldn't need to remove. Bolt on side that adjusts tension. Release tension buy turning bolt counterclockwise . Tensioner should move toward engine and release belt.

speed sensor is bad if already replaced check instrument panel

there are 2 different faults here . replacing the front brakes will not cause your second problem.Run the fault codes first to see what may be recorded.

you might want to try to check the fuse box locate the fuse for the specific light and check that is not burned. you might also want to check the actual light bolt to see if the light bolt is not burned out.