Slight falters MCx10

What sensors are involved with slight misses and falters lexus or avalon mcx10, almost undetectable, can not switched on cruise control be involved
Don't think spark plugs are the problem.. Cruise control works on long stretches but sometimes on curvy downhill runs seems to get away.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.