07 yaris lb sometimes does not start :(

[biggyjiggy]

Hi everyone! I just got my yaris (manual 5spd) last week with 25,000 miles on it.

For some odd reason the car runs perfectly fine but then sometimes when i try to start my car it doesnt turn on. For example today i went to sports authority and 15 minutes after i had bought what i needed the car wouldnt start. I always start it with it in 1st gear, clutch in and turned ignition. however, today when i did that at sports authority it didnt start. I'm sure the battery works fine cuz when it wasnt starting, the radio and fan still works. (i dont have power windows or locks). Ohhh and when i turn the ignition to start the car there is no sounds. no clicking of the starter. :/ im not sure if its the starter or the clutch. but with the current mileage it doesnt make sense that the clutch would be worn out or the starter.

Any ideas?

The car does have a custom alarm system installed by the previous owner. To me i think that might be causing a problem with the relay to start the car. I've experience this problem in my previous car. there was a relay connected to the relay that starts the car when someone installed a custom alarm system. I figured id ask around here first before deciding to bring it to the mechanic.


Any advice would be greatly appreciated :)

-Marc