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importdoctor
importdoctor, ASE Certified Technician
Category: Car
Satisfied Customers: 9974
Experience:  ASE Certified, 10+ years experience
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2002 mazda protege: the cars runs..cuts..start back..cools

Customer Question

i have a 2002 mazda protage the cars runs for a 5 mins then cuts off trys to start back up but wont until it cools off then does the same thing over and over. i did a complete tune up still does sAME THING. codes r po171 and po340 can this be the problem please help
Submitted: 7 years ago.
Category: Car
Expert:  importdoctor replied 7 years ago.

Thank you for using just answer.

How many miles are on this car and when was the timing belt last serviced?

Customer: replied 7 years ago.
motor was replaced miliage over 200000 not sure of milage on used motor. codes are saying cam sensor leaN AIR/FUEL RATIO BANK 1
Expert:  importdoctor replied 7 years ago.
The mass air flow sensor is part of the input for the p0340 code. If a wire was not damaged when the engine was replaced then what you are most likely dealing with here is a damaged crank or cam position sensor, the timing belt should also be checked for condition and proper position here, it is most likely not doing this for the first 5 minutes because the car does not enter closed loop operation until warmed up.
Customer: replied 7 years ago.
CAN YOU SIMPLIFY THE ANSWER. THE CAM SENSOR CAN SHUT THE CAR OFF ONCE ITS WARM?
Expert:  importdoctor replied 7 years ago.
Simplified answer here is that your car is losing signal from the camshaft position sensor or the crankshaft position sensor.
Customer: replied 7 years ago.
THE CODE SAYS CAM SENSOR YOUR THINKING THAT OR CRANK SENSOR. IF THE CRANK SENSORS BAD IT COULD TRIGGER CAM SENSOR CODE? SO WHICH ONE DO I REPLACE? WHERE DO I START AND FINISH? CAN U SEND ME DIAGRAMS OF BOTH SO I NO WHERE THEY ARE AND HOW LONG IT TAKES. THANKS PETER SORRY FOR BEING A PAIN.
Expert:  importdoctor replied 7 years ago.

Youre not a pain just a little confused I think.

The cam and crank sensors run in corelation to signal the computer for spark and fuel delivery. A code for a sensor circuit does not mean "replace part", that is a common misconception by many customers that think technicians plug in a scan tool and read codes to tell them what to replace, not all repiars and problems involve replacing a part, the code only tells you what "system" is acting up to narrow down which items to do hands on inspections to. Yes you cna just pop a couple sensors in the car but there is only a 50/50 chance that will fix it, the car needs to be properly inspected hands on by a qualified and equipped technician with the needed special tools to diagnose and repair this issue.

Customer: replied 7 years ago.
OK
Expert:  importdoctor replied 7 years ago.

have a good evening

Customer: replied 7 years ago.
NOT SATISFIED. I COULD HAVE TAKEN CAR TO SHOP FOR ANSWER
Expert:  importdoctor replied 7 years ago.
You asked and I answered, I am sorry if you are not satisfied but this is not a crystal ball situation, I gave you the simplified answer you asked for after a technical answer. Good luck to you sir.
Customer: replied 7 years ago.
Relist: Incomplete answer.
Customer: replied 7 years ago.
Relist: Answer quality.
Get advice from a different tech
Customer: replied 7 years ago.
Relist: Answer quality.
I want to ask a different expert