Vehicle issue

Our 2008 Dodge Caravan that is paid for just broke down. The mechanic can’t get to the problem area without about a day’s labor, approx. $950. He is quoting us a maximum of $3400 to fix it, with a one year guarantee. The vehicle is only worth $3000.
I’m all for fixing it, as I feel it has life left in it, but that’s a pretty penny.
I’m rusty on Dave’s vehicle advice.
Any opinions welcome.