This sounds to me like the use of algoritmantationing hmm or well, google remembers stuff like uh everything, its almost like they allready know you, but I hope not. Its a common thing, I hear it everyday, but did this help you ?

In my testing of various Google search plugins (.com, .co.uk, .ca, .com.au), Google seems to use my IP address in the U.S. to localize suggestions.

I think the way Firefox requests suggestions doesn't take advantage of your existing Google cookies which would inform Google about your regional and language preferences. It also doesn't send that information with the request. But maybe that is fixable?

The trick is to add some language and region parameters to the suggestion request. Unfortunately, the built-in search engines cannot be edited, so an add-on of some kind would be involved. I'm taking a look...

Okay, here's my effort. Want to test it out?

https://www.jeffersonscher.com/res/googleUS.php

Okay, here's my effort. Want to test it out? https://www.jeffersonscher.com/res/googleUS.php

Thank you for answering, after swaping the default Google search engine for the one you provided the problem does not seem to be solved, for some the first 3 to 4 suggestion are still in Spanish.

At this point I think I've decided to just turn off suggestions, at leats until I find a solution later, or Firefox provides an option to change the location of the default Google search engine.

I will update this thread if I find a solution to the problem

Thanks for testing. It's pretty difficult for me to test from California!