Do Not Sell My Personal Information Jump to content


  • Join The Club

    Join the Lexus Owners Club and be part of the Community. It's FREE!

     

Recommended Posts

Good afternoon guys

 

My ls430 has some throttle hesitation, I have changed the plugs and coil packs also found an air leak and dealt with that but its still there at low rpm if I am gentle with the pedal as I normally am there is no lag but if you poke it a little more the rpm goes up then drops below tick-over  then at some point goes back up hopefully before getting hit by a oncoming truck.

Any ideas?

thanks again

john 

Link to comment
Share on other sites

Definitely check the throttle body. If you had an air leak after the MAF sensor then the long term fuel trims are probably way out which will take a while to come back in line. Might be worth resetting the ECU to clear everything - just disconnect the Battery for 30 seconds.

Was there some other issue for you to change all the coil packs? You would normally just replace one that is failing, they don't all fail at once.

I assume there is no engine check light / error codes being generated? Ideally you want it connected to some diagnostic equipment to test and see if all the sensors are working as expected, otherwise we are just speculating and going through a trial and error process. It could be temp. sensor, air/fuel ratio sensors, MAF sensor, fuel pressure etc. etc.

  • Like 2
Link to comment
Share on other sites

I have tried resetting the ecu I changed the coil packs and plugs as a service its gone a long way 240k thought it was about time and i had them so no foul no harm.

I had some error codes which were to do with the air leak which I think I have sorted and cleared, I am beginning to think that its the injectors .... (its rare) when I switch to LPG i don't get the hesitation and the last links in the chains are the injectors I better clean them tomorrow and see what happens.

Link to comment
Share on other sites


so.... I hang my head in shame.

I found a small quiet exhaust leak at the front y section which was the cause of the throttle hesitation.

Problem solved can't believe that such a small leak could cause such a thing 

Thanks again for everyones help and sorry for wasting your time

  • Like 4
Link to comment
Share on other sites

2 minutes ago, skyway said:

so.... I hang my head in shame.

I found a small quiet exhaust leak at the front y section which was the cause of the throttle hesitation.

Problem solved can't believe that such a small leak could cause such a thing 

Thanks again for everyones help and sorry for wasting your time

Never a waste of time, a problem shared helps everyone learn. Great result!

  • Like 3
Link to comment
Share on other sites

  • 3 weeks later...

Latest Deals

Lexus Official Store for genuine Lexus parts & accessories

Disclaimer: As the club is an eBay Partner, The club may be compensated if you make a purchase via eBay links

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share







Lexus Owners Club Powered by Invision Community


eBay Disclosure: As the club is an eBay Partner, the club may earn commision if you make a purchase via the clubs eBay links.

DISCLAIMER: Lexusownersclub.co.uk is an independent Lexus forum for owners of Lexus vehicles. The club is not part of Lexus UK nor affiliated with or endorsed by Lexus UK in any way. The material contained in the forums is submitted by the general public and is NOT endorsed by Lexus Owners Club, ACI LTD, Lexus UK or Toyota Motor Corporation. The official Lexus website can be found at http://www.lexus.co.uk
×
  • Create New...