...at first,im having overheating problem.everytime we overheat, we stop and put some water in the radiator and drive again.this worked for us for sometime.last friday,im about to let the radiator be overhauled but here come the real problem:

the engine won't start now!
this happened after we have the fuel gauge repaired.then way back home, we got 3x overheating problem.then when we arrived back home, i cant restart my engine anymore...the battery is fine...my uncle's diagnosis was there's no fuel being pumped or "barado".so he tried to tighten the joints of current distributor wirings as well as opened the fuel filter to release some gas, and it worked for 3 times...but when we arrived, the process that we did before won't do it anymore.
we pumped the gas, start,pump,start...but cant start the engine...we let the gas checked and theres a lot of gas.we called for a mechanic.he's diagnosis was there's no current being distributed to the engine.he checked the distribution part and said that we need to change it maybe due to a damaged coil. but when we went to banawe to have it tested, there's current but sometimes it dies...so we bought that part for P2000.the current output works fine now.
when we install back to the car, the same problem...the engine wont start...
the mechanic did a lot of trick but to no avail..he told us there's an electrical problem....huh!...he got me spending 2000 with a wrong diagnosis..my car is stucked now.tomorrow ill bring it to an electrical mechanic....

also, there's an active yellow figure at the bottom of the gas and temperature panel...some sort of an engine figure.these are my questions

1.what is this?since this appeared, the car wont start anymore...
2.is this an engine problem from computer box?
3.what are the possible culprits to this problem?no current distribution?
4.what's the best thing i can do?

thanks so much