will not start it will act like it is flooded and backfire?

1999 FORD TAURUS
180,000 MILES
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APRILJOHNS
  • MEMBER
  • 1 POST
car will not start it will act like it is flooded and backfire fron the engien. have replaced, heads and seals,sparkplugs and wires,thermostat water pump and battery. any ideal what it might be?
Nov 18, 2012 at 1:15 AM
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SQM
  • CAR REPAIR CONTRIBUTOR
  • 6,383 POSTS
Hello,

It sounds like you might have an issue with the crank position sensor.

If you have a faulty crank sensor the engine might crank but it will not get started due to incorrect signal provided by the sensor.
When a crank sensor goes bad it may or may not trigger the check engine light.
The crank position sensor is located on the bottom part of the engine.
It is next to the crank shaft pulley.

https://www.2carpros.com/articles/how-a-crank-shaft-angle-sensor-works
https://www.2carpros.com/articles/symptoms-of-a-bad-crankshaft-sensor
https://www.2carpros.com/articles/crankshaft-angle-sensor-replacement

I have attached the diagrams for the crank sensor.

Please let me know of any questions.

Thank you.
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Aug 9, 2021 at 8:27 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.