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Delay start

Tiny
AHMEDHAMDY
  • MEMBER
  • 2007 PROTON GEN-2
  • 70,000 MILES
My car Chery a5 not listed.
The problem is, car started in the morning in one second or less but after some time of driving if I stop the engine for minutes. Also start rapidly the problem occur when I leave the car for one hour or more the delay is about four seconds. In first second there is short trial from the engine and failed.
I have checked the following:
Evap valve it is closed.
Fuel injectors.
Thanks in advance.
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Thursday, March 1st, 2018 AT 1:45 PM

2 Replies

Tiny
STEVE W.
  • MECHANIC
  • 13,467 POSTS
The description sounds like a failing crank position sensor. It heats up and causes a bad signal. Once it cools the sensor works again. That is based on seeing similar issues with other vehicles. When it does not start how fast does the tachometer move?
I cannot find any good service information on that car as it never made it to the U.S. So telling you how to test the sensor is not possible.
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Saturday, March 3rd, 2018 AT 4:42 AM
Tiny
AHMEDHAMDY
  • MEMBER
  • 2 POSTS
Thanks, I will replace it and inform you if succeeded.
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Saturday, March 3rd, 2018 AT 6:58 AM

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