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Engine cranks but won t start

2000 chevy prism. engine turns over normal. has no spark, no injector signal, no power to fuel pump. a new fuel pump and ecu has been installed. what am I missing? help please. is there a hidden main power relay. oh also ecu will not communicate with obII scanner. ? all fuses check good. is there a circuit breaker that needs to be reset manualy?

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  • drabon40 Mar 27, 2014

    no power to fuel pump, no spark . no computer signal to read code or not. thinking short in ignition switch . wiring tested good from kick panel block to fuel pump . have power to relay but not engaging fuel pump with switch.

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  • Chevrolet Master
  • 354 Answers

Unfortunately there is no circuit breaker. Without being able to see the car myself to diagnose it and based on the symptoms you state, I would say off the top of my head that there is a problem with the sensor that recognizes crankshaft position, or crankshaft position sensor as it is better known. DO NOT JUST GO AND BUY ONE. There are other tests.

When you first turn on the key without trying to start the vehicle, do you heard a very soft click after about 3-5 seconds. This is the fuel pump relay bringing the fuel system up to pressure.

If you can get someone to check to see if there are any codes stored in the computer, it would aid in my diagnosis.

Posted on Mar 22, 2014

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Posted on Jan 02, 2017

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justuscc
  • 360 Answers

SOURCE: car will just turn over

main relay contacts get burned up...... common on the hondas its under the drivers side dash

Posted on Oct 10, 2008

alicantecoli
  • 22246 Answers

SOURCE: 1997 mitsubishi montero 3.0 will not start

difficult one could be a multitude of problems from a supply problem to the ECU or the factory immobiliser has cut in ...have you check the knock sensor ?? dont know where it is on theis model but its like a switch that shuts everything down in a accident

Posted on May 30, 2009

michigan man
  • 3533 Answers

SOURCE: truck won't start. engine turns over. checked

have someone to stand back by the truck why you turn the key to listen to hear if there is noise coming from the gas tank if it is then its not the pump then it maybe your fuel pump relay or the crank sensor give these websites a try www.alldatadiy.com and www.autozone.com wish you the best of luck Michigan Man.

Posted on Oct 31, 2009

  • 1 Answer

SOURCE: no spark no fuel no start! replaced and checked

funny thing is I have a 2002 GTI with the exact same problem. have spent the last three days at work trying to figure things out.. best of luckn email me if you figure anything out. Beattie411@gmail.com

Posted on Mar 19, 2010

conveyician
  • 110 Answers

SOURCE: engine won't start - I

it sounds like the cam sensor is not turning, Pull the oil fill cap and look in to see if the rockers are moving up and down while the engine is cranking. If you cannot see this, try to remove the top cam gear plastic cover , or peek in there to see if the cam and belt are rotating during cranking. Your timing belt might be broken.

Posted on Oct 03, 2010

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