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Tech501
Tech501, Auto Service Technician
Category: Car
Satisfied Customers: 747
Experience:  38 years exp, ASE Mastertech with L1 Advanced Engine performance
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98 chevy blazer that wont start once in a while

Customer Question

’98 chevy blazer... doesn’t start once in a while... cranks, fires, dies... may come back 3 hrs later and starts fine... or may have to wait overnight... happens once every 20 to 30 starts... any clues?... fuel pump ok, pressure regulator ok, dealer replaced anti theft ignition... happened again...any ideas?... loose ground, temperature?...
once it didn't start after it was parked overnight... then i waited a day and it started perfectly... another time it was started and driven 15 minutes, parked for 1.5 hours, then wouldn't start... came back in 3 hours and started perfectly... seems like about 50 degrees has been the worst... starts when cold and always has when the engine was totally warmed up... no codes were in the computer after it happened the last time (that was after the anti-theft ignition was replaced)... sure appreciate your help..
Submitted: 11 years ago.
Category: Car
Expert:  Tech501 replied 11 years ago.
 It still sounds like your having a problem with the security system. If the security light is flashing at the time this occurs, then the system has disabled the car. That's how the system works. It starts and stops. They may have changed one component of the security system but obviously it wasn't the right one if it's still happening. The system consist of a half dozen different components. I think it is still the dealers responsibility to get to the bottom of the problem if they misdiagnosed it the first time.

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