Hello im new here. Wondering if someone can answer this question for me. i have a skoda felicia 1.3 68hp mpi 1997 model last week my car do some cuts when i drive after 1hr driving in the city the engine dosent start again after 5 minutes i start it up and i drive it.. slow my mechanick said that the fuel pump is the problem we changed it... after a 10 minutes of driving the engine failed.  after a lot of minutes the car start agian... I'm back to the mechanic and we see  that the  crank sensor is scratch. i buy a new one and i put it on the engine.. the car start good i test it and its goo very good in the road i clean the map sensor and the throttle after all this the car cut Current but the engine  the engine continues  to work. my lamda is in good condition, i put new coils new  spark plugs nothing  changed 

 

This is what I have done so far:

1. Checked for error codes using OBD1: nothing only crank sensor code i delete  it
2.  new sparkplugs but the old ones is in good condition
3. Cleaned throttle body and reset it. 
4. Changed Coils
5. Changed crank sensor and coolant sensor
6. new pump new fuel filter

the car have 191.887 km in the odometer

 

We need to clarify some parts in your description.

When you say "my car do some cuts" you mean the engine misfired or stopped completely?

How did you reset the throttle body?

 

Now, looking at your long list of parts replaced (without any evidence of fault) I'd say the problem should had been solved.

The only other less probable things I suspect are:

- faulty throttle position sensor

- some electrical intermittent open connection to: throttle body connectors, ignition transformer, ECU.

 

Intermittent problems are the hardest to find. Without doing more tests we can't say for sure where is the problem. It would be ideal to have the OBD reader handy when the problem occurs and look for temporary errors. You can also look at live data and see what is wrong.

 

Skoda Felicia is normally a reliable car. Problems might occur due to its age from dirty/corroded connectors, old wiring, etc. Start again simple but look for evidence.

 

Hello ricardo the car do some cuts  stopped (completely).. after 3 or 5 minutes i dont remember i try to start again the engine and its stopped after 10 minutes this happen before i change the fuel pump and the crank sensor.. my mechanic clean the throttle and the map sensor with carburetor cleaner in the obd nothig said that the car have  a problem.yesterday i put new starter and isee that he has  a broken gear.οne week now i do a lot of test with new sparks coils  but nothing change  but the problme is not from the engine, but surely from electrical. do you know if this Bluetooth ELM327 Interface -OBD2 Diagnostic Car Scanner Tool (model) can fit for my car model 1997 1.3mpi . thank you for your answer

 

Skoda Felicia 1.3 MPI is OBD I compatible (OBD II scanners are not good). There is no OBD scanner based on ELM 327 chip able to diagnose the ECU on Felicia. You need a VAG-COM release 409.1 interface/software and a laptop.

 

The starter with a broken gear might explain the scratches on the crankshaft sensor but that doesn't mean the sensor was bad.

 

Please read again all my opinions and test each one of them. You asked for help but now it seems you know (what evidence do you have?) the problem is not fuel/ignition related, but electrical system related.

Thanks for the help i will try to check 
the  electrical system related