how is everyone doin,

ok, bout a couple months ago i got a tune-up but now when i get mylexus up round 40 mph it kind stals. Some times it does it really bad. iI was just thinking that one of the plugs where lose but all in tack. it has new plugs and everthing. im just lost but,i know i could come back to my friends at clublexus. thanks guys.

 

what do you mean it kinda stalls...? don't understand what condition you are describing...

 

when im drivin witht he ac of or on the car just starts to jump

 

Its the classic 40 mph hesitation!

Do a search with the last 3 words ^

I can't remember if this issue was ever solved, but apparently its common.

 

Happens to me too. The car starts jerking when it is cold. After it gets warmed up it just seems to bog a little.