New Member Area New to Lexus Forum? Stop in tell us about you.

Ls430 misfiring after lengthy maintenance

Thread Tools
 
Search this Thread
 
Old Sep 23, 2025 | 06:07 PM
  #1  
zue's Avatar
zue
Thread Starter
|
Junior Member
Joined: Sep 2025
Posts: 1
Default Ls430 misfiring after lengthy maintenance

I am STRUGGLING!! ADVICE NEEDED.
I have changed all the coils , spark plugs , fuel injectors , valve cover gaskets , intake manifold gasket, vvt solenoids a few hoses and oil change as well as compression check on the valves . I don稚 know why I知 receiving misfiring. The scanner said misfire in cylinder 1and 7 but keeps bouncing back and forth . I don稚 know what else to suspect the sluggish acceleration or the loud sound acceleration from the muffler system . I have been trying to pinpoint this problem for almost 3 weeks now and after changing all these parts I am now here please give me some advice and maybe any experiences you have faced with this problem I own a 2001 ls430 UL Modle with about 190k miles I have been suspecting the 02 sensors since none had been changed since I have owned the car and I doubt it had ever been changed but I知 thinking maybe new 02 sensors and catalytic converters or even just gutting and cleaning sensors . I知 not sure what else needs to be done but I知 open to all suggestions PLEASEEE.
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Xavierl
Lexus Forum Help & Suggestion Center
1
Jan 5, 2026 08:59 AM
Jason Bennett
Off Topic
0
Jun 6, 2025 04:02 PM
MotorCityAutoParts
New Member Area
0
Dec 28, 2007 12:23 AM
zoraduntov
New Member Area
1
Oct 22, 2007 01:26 PM
auro mieles
Lexus Forum Help & Suggestion Center
1
Jun 19, 2007 10:17 AM




All times are GMT -5. The time now is 12:16 AM.