I know this is an old thread but putting together a small tool kit for the car is something I've been meaning to do for a long time and always put it off. Well on my last road trip my procrastination finally bit me
As I've gotten older and wiser i've found I only need two tools when traveling. A cell phone and a credit card. Anything other than a tire going flat is going to get the tow truck out. Almost 100% of my on the road problems have been computer related. (sensor failure) and without the proper diagnostic tools you aint got a clue.
No offense but you may be older but not wiser. Sure there are plenty of things that can go wrong on a car that's not exactly roadside fixable, especially without parts or diagnostic tools but there are plenty of other things that can happen were having a few tools on hand may make the difference. Cell phones and credit cards are nice but they are not the answer to everything nor can they be counted on 100%.
About a 1/4 of the way into a recent trip to SC, we started hearing some type of rattling under the van. Pull over and check to find that the spot welds that held the heat shield to the cat had broken free and the only thing holding it on was the wire leading to the o2 sensor behind the cat. The heat shield was basically just dragging on the ground.
With a pair of snips I could (and eventually did) cut that shield off in less then 2 minutes. With some zip ties or gorilla tape I could have rigged it up and out of the way but I had nothing. I did have a cell phone and CC but was I supposed to do with them? Spend a $100 + dollars calling a wrecker? (which coincidentally is around the same amount of money it would cost to put together a small car tool kit

) It was around 3:30am (we like to travel at night) so it wasn't like I could pull into a service station and borrow something or even go into a store and buy what I needed.
Here's what I'm working on putting together...
1/4 & 3/8 sockets, universals, ratchets, extensions.
Pliers
- Slip Joint
- Diagonals
- Channel lock
- Needle nose
- Locking
Screwdrivers
- A couple of random size flat blades
- P1 and P2 Phillips
- 1/4 driver with a few assorted bits (Phillips, torx, etc.)
Adjustable wrenches
A few common metric and SAE combo wrenches
Hammer
Aviation snips
Lights
- Maglight (doubles as a light hammer or weapon)
- Small hand held flashlight w/lithium batteries that can be stood up in "candle" mode
- Head lamp or hat clip on type (hands free)
- light sticks
Tape
- Duck
- Gorilla
- Electrical
Zip Ties
Bailing wire
Super Glue
Small Ratchet straps
Small pry bar
Small cheap multimeter
PB Blaster/WD-40
On top of that, I always carry a good knife and a multi tool that I keep in my laptop bag that's almost always with me that also has some other supplies. Here are some other things that aren't actually tools but also part of an emergency road side kit....
Tire plug kit
Can of fix a flat
Tire pressure gauge
Small electric tire pump
Fuses
Flares
First Aid kit
heavy wool Blanket
Gloves
- Heavy Winter
- Mechanix
- Disposable (nitrile)
Large, thick plastic sheet.
Large "yard waste" type garbage bags.
1 gallon (or more) of water.
a few smaller water bottles
a couple of quarts of oil.
Paper towels
Toilet Paper
Sanitary hand wipes and\or hand wash
I know this sounds like a lot but it's really not. The tool kit itself can be put together for $100 or so if you shop around and realize the tools don't have be A. top of the line, B. New and\or C. US made. These are for emergencies only. All the tools should be able to fit into a small bag. The bag and rest of the car kit should be able to fit into a small plastic storage case like RUbberMaid's Action packer and left in the trunk.