hi ladies and gentlemen I am new to the sight an new to Lexus I always own Toyotas my first Lexus 93 sc400 I love the car it has 119000 miles did a tune up when I by it, It was hesitating like crazy I do a oil change spark plugs and wires distributer caps and rotors coolant flush and thermostat brakes and rotors all around belts timing belt was don recently also I did a alternator it was blown dripping from power steering pump I repair the pump.

now I am having a hesitation again a mild one but I don't like at idle it idle hard intermediately thought it was the gas because I was using 87 instead of 91 or 93. change it and it still happen driving last night I playing my music then I put the turn signal on it start hesitate or miss again turn the music down and it stop I am wondering if the coil packs need to be change because it seem as if power is sucking from something.

need help what can I do can anyone help me please

 

Here ya go. Check coils and try 12v ecu mod.
And please use 91 dude, its only 4 more bucks per fill up. Only 2 more bucks if you do a a quick $25 gas stop. A lot of guys on here have even said the 87 wastes a lot faster too so youre spending less...to get less lol. Idk though have never used regular.
Good luck!
https://www.clublexus.com/forums/sho...d.php?t=551125

 

There have been so many issues and threads like this one recently and most of them ended up being the coils. That's where I would start. Unplug each coil one at a time and attempt to start the car. If the car doesn't start with one unplugged it means that coil is good.

 

yeah those coils are a pain. Even if the unplug a coil option doesn't show you a result (like mine didn't) try replacing them. For some reason our coils go bad if shaken bad or any kind of short in the system. I put 30k on my car since December and have replaced three coils (yes I know there is only 2 on the car). Generally the driver side one goes first as it is lower and closer to water/fluids.

 

Thank guys I will check it tomorrow. Whats the best coil brand to by?

 

OEM coils work best. I got one from pepboys and two from autozone, the original autozone one failed after a week.

 

thanks!! so its best to go to the dealer then

 

If you want to pay top dollar for OEM coils, the dealer is your choice. I'd look around ebay or amazon first.

 

Okay thanks I got a pair from a 99 sc400 just waiting to see what happen I just install them will find out if that's the problem soon. Thanks for your help guys