hi all, im new here and to these types of cars, i recently bought my first lexus 2 weeks ago, it had a bad misfire that i knew of when i got it, pulled the wires to find one of them n pieces, i replaced them and the plugs and it still didnt fix it, it sputters rly bad on take off unless its cold, like rly cold, at about 30 mph i can punch it and itll sputter some more then it runs like a whole new car after it downshifts and reaches a higher rpm, anybody got some advice for me????

 

Yes. Buy a Kia. Just kidding..never do that, you'll regret it for the rest of your life. Sounds like an ECU problem. Remove the ECU and have it rebuilt. Prior to that, open it up and check for leaking capacitors. Also a suspect would be the fuel pump ECU, you can have the 12v Mod done to it before spending 100 bucks on a rebuild. GL.

 

So the ecu huh, ok where is that? Lol is it passenger floorboard like my 240 was?

 

This is my car, I love it even though it doesn't run worth a crap lol

 

Main engine ECU is on the passenger side floorboard. Pull up the carpeting, locate a plastic cover, romove the bolts, the rest is preschool.

 

Cool do u think a reset would do anything since I just changed the plug wires cuz one was n pieces?

 

You could have mentioned that prior to asking lol! Definitely reset the ECU. If the result comes out the same, you might have gotten the firing order incorrectly. Did you replace the plugs along with the wires? If not, you should.

 

Lol yea I changed both just didn't reset it lmao

 

ok i reset the comp n my sc400 and it still didnt fix it and now my check engine light is on...... on top of that my heater doesnt work, it blows warm as long as u dont turn the fan upverry high, it doesnt even blow hard enough to defrost the windsheild, any suggestions?

 

Might have a rat nest in the blower mower. Where has this been parked? Outside?

On your problem, I would check the coils, and ignitor and the MAF.

 

I noticed the vacuum line on the intake is broke off, that may fix the sputtering but haven't been able to find a new one, but if thee was a best or something n the blower wouldn't that keep the a/c from working too? Cuz the a/c blows ice cold

 

Damn auto correct, I meant nest