Show names…
Car Talk Madness - or How Tom and Ray Saved the Day
OR
Car Talk Superheroes - or How Tom and Ray Saved the Day
OR
Ray and Tom - How the hell did he get his name first?
OR
Don’t Drive Like My Brother
Since Tom and Ray have a Garage already in Cambridge…
…right there in Harvard square…
…seems to me a Good name is the name of their Garage
.
.
…The Good News Garage…!!!
The Knuckle Busters.
As the Wheels Turn… could refer to cars or the (broken) wheels turning in your heads 
Car Buffs
there is simplicity in calling the show
.
.
…“Car Park Plaza…”
Car Clatter
or
Car Clatter with Click & Clack
I would suggest “Two bumps in the road”
I suggest “When All The Gears Mesh …”
Dude’s, What’s Wrong With My Car?
How about
“The Rachet Brothers’
“Garage Talk”
“The Fix It Show”
“Auto Shop”
'Brother’s Wrench”
“Wrenching Trouble”
“Car Troubles”
“Trouble with Sibbles”
“What’s That Sound?”
Another one
“Click and Clack Car Care”
A pirate walks into a bar with a steering wheel sticking out of his fly.
The bartender asks “What’s with the steering wheel?”.
The pirate goes “Aahrr. It’s drivin’ me Nuts!”.
Car Watch
Make sure to have lots of gals in skimpy bathing suits.
“Nuts”
Make it short. Describes the show or the guys… How about:
“Nuts”
As in “Did you see Nuts last night? I think Dolora’s boyfriend should blow out the carbon. And why do those nuts still get along with each other? If I were Click I would have told Clack to get his fingers dirty or get out of the way a long time ago.”
“The Piston Pops”
Car Docs.
Assuming the cartoon characters have PhD’s as Tom and Ray do, the name refers to both their academic careers and their ability to diagnose car problems.
“All in the car talk family” (with apologies to Archie)
Click & Clack - you don’t know jack