Camry Stalls at Lights

Hi all,
I recently bought a 94 camry and the car seemed to do fine. I replaced plug wires and spark plugs. Wires since one of the wires I discovered was broken when I was changing plugs. The car though was running just fine even with the broken wire set.
Since I changed them the vehicle seems to stall at stop lights when I brake. It also stalls if I stop on the freeway....The check engine light seems to come on periodically too - dont know what codes, havent used an OBDI before. Its been to a mechanic but he wasn't able to duplicate the problem and said it could be the EGR valve or a neutral switch (?) Thought I'd get some advice beore I start changing parts. Thanks for any help!

You might be burning oil with fuel which makes your car stall at low rpm. I had an old car which did the same. I found that the oil burning caused the car to stall since the proper fuel/air mixture is contaminated with oil. You might wanna get that checked first

Here is a site that shows how to obtain trouble codes. The codes on the site are for ODBII, so don't go by the code explanations, only how to obtain them.

http://www.troublecodes.net/Toyota/

Thanks all.
It turned out that it had misfire codes and replacing the distributor cap and rotor seems to have fixed it - atleast so far. I'll post if something new is seen.