car shuts off after running only thirty seconds

187,000 MILES • 3.0L • 6 CYL • FWD • AUTOMATIC
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TOPDAD1947
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Car starts and runs for thirty seconds and shuts off! I have replaced the spark plugs, ignition wires fuel pressure regulator, fuel pump, fuel filter, cam sensor, crank sensor and still have this same problem?
Oct 13, 2016 at 2:05 PM
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HMAC300
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if this has a security system that may be the problem. if no owner's manual look online for how to reset it for your car. it kind of sounds like it is. if that does not work have a mechanic scan for codes.
Oct 14, 2016 at 12:23 AM
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TOPDAD1947
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Check engine light not on. Would have to tow to mechanic. no alarm system.Thanks, Tom.
Oct 14, 2016 at 5:55 AM
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HMAC300
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you do have a security system on your car so try what I said in first reply about a reset then it will need scanning for codes if it doesn't start.
Oct 14, 2016 at 8:16 AM
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TOPDAD1947
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OK Will Do!! One More Thing? I Jumped The Fuel Pump To Alleviate The Relays And It Still Does The Same Thing? What Would Stop The Fuel From Getting To The Throttle Body?? Also If Said Security System Is Faulty why Would It Start at All? Thanks Tom.
Oct 14, 2016 at 9:36 AM
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HMAC300
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the fuel can get to the rail but not through injectors which security systems cut off or they cut off ignition systems.what is fuel pressure see this link
https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
here is one on security systems
https://www.2carpros.com/articles/how-to-reset-a-security-system
Oct 14, 2016 at 10:04 AM
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TOPDAD1947
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Ok I Will Try That Tomorrow!! Thanks Again Tom P.S. I Have No Key Farb and Never Did so Where Is The Alarm On My Car?
Oct 14, 2016 at 1:38 PM
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HMAC300
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it's not an alarm you probably have a transponder or a chip in your key to match the system our manual says you do have it and being a kind of premium car it would have it . It doesn't send an alarm anyhow it just won't allow the car to start and or run longer than 30 seconds.
Oct 14, 2016 at 10:40 PM
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TOPDAD1947
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OK Did What You Said!! Did Reset With Key That Does NOT Have A Chip!! Also Did Reset Locking All Doors and Unlocking!! Also Did Reset Using Key By Opening Truck First Then ALL Doors And Hood Closed Then Truck Lid!! Problem NOT Solved!! Tom.
Oct 15, 2016 at 9:31 AM
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HMAC300
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alli can suggest then is to go to this link and see if anything comes up from it. also check resistance of coolant temp sensor see pic.
https://www.2carpros.com/articles/car-cranks-but-wont-start
Oct 15, 2016 at 9:53 AM
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HMAC300
  • ✓Experienced Mechanic
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if all else fails scan for codes .
Oct 15, 2016 at 9:54 AM
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