2004 LS430 starts missing when started or sometimes while running. Can usually stop the shaking by shifting to N and restarting engine while stopped or coasting. ECU bad or …?

Asked by Oct 22, 2016 at 12:51 AM about the 2004 Lexus LS 430 Base

Question type: Maintenance & Repair

2004 LS430 starts missing when started or sometimes while running.  Can
usually stop the shaking by shifting to N and restarting engine while stopped
or coasting.  ECU bad or …?

1 Answer

270

Before you go replacing ecms..etc .pull each sprk plugs from its tube .if you see oil in any of 1 or all of them you'll need to replace the valve cover gasket amd tube seals .pretty easy to do . If oil is in the tubes it will cause a.miss because the connector to the plug is oil coated once started and a lil acceleration it will usually b urn off enough smooth out the miss ..while.driving it .. very con issue on alot of cats with speak plugs that got thru the valve cover ..Good luck

Your Answer

Add photo

Related Questions

  • High pitched beep and warning lights all on 1 answer

    My 2004 Lexus SC430 all of sudden bad all the panel warning lights come on along with a high pitched continuous beep. What does it mean and how do I fix it?

    2004 Lexus LS 430 Base

    -

    Maintenance & Repair

  • Navigation System quit working. 1 answer

    We own a 2005 LS 430 with Nav. Today it was working fine then a screen showed up saying Please Insert CD. Then some japanese writing below that. I do not know where the CD to the Nav is much less w...

    2005 Lexus LS 430 Base

    -

    Maintenance & Repair

  • Horn does not blow 3 answers

    Horn does blow when pressed

    2005 Lexus LS 430

    -

    Maintenance & Repair

  • Should I buy a new ES 330 or a used 2004 LS? 5 answers

    The money is about the same and I really can't afford more. I currently have a 96 ES and a 03 RX. I plan on keeping it for several years.

    2004 Lexus LS 430

    -

    Shopping & Pricing

  • 2008 RX350 Engine problem 25 answers

    My 2008 RX350 stopped while I was driving slowly due to heavy traffic - there wasn't any abnormal sound or shaking before that. I tried to restart, but it couldn't. So I had it towed to a Lexus deal...

    2008 Lexus RX 350 FWD

    -

    Maintenance & Repair

Search Lexus LS 430 Questions

Lexus LS 430 Experts

#1 Tom Demyan
Tom Demyan
Reputation 190
#2 fournote
fournote
Reputation 170
#3 OCIDD
OCIDD
Reputation 150
View All

Related Models For Sale

Used Mercedes-Benz S-Class
155 Great Deals out of 6,422 listings starting at $2,300
Used Lexus GS 300
28 Great Deals out of 788 listings starting at $2,995
Used BMW 7 Series
187 Great Deals out of 6,196 listings starting at $3,500
Used Lexus GS 430
6 Great Deals out of 99 listings starting at $3,800
Used Lexus SC 430
20 Great Deals out of 544 listings starting at $5,799
Used Toyota Avalon
222 Great Deals out of 13,562 listings starting at $1,475
Used Mercedes-Benz E-Class
482 Great Deals out of 22,745 listings starting at $1,450
Used BMW 5 Series
541 Great Deals out of 14,694 listings starting at $1,375
Used Honda Accord
685 Great Deals out of 81,552 listings starting at $1,200

Used Cars For Sale

2006 Lexus LS 430 Base For Sale
8 Great Deals out of 108 listings starting at $7,794
2005 Lexus LS 430 Base For Sale
14 Great Deals out of 225 listings starting at $4,994
2004 Lexus LS 430 Base For Sale
13 Great Deals out of 194 listings starting at $5,000
2003 Lexus LS 430 Base For Sale
127 listings starting at $4,495
2002 Lexus LS 430 Base For Sale
4 Great Deals out of 136 listings starting at $2,999