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Re: cranks but won't fire. ran fine just before this...
It will if you have the Code book to tell you what Codes are What. Try Locating the Fuse Relay Panel under the Hood, Look for the Relay that is Marked "Fuel Pump" "Starter" Replace these and see what you Have. Also, Check the Tension on your Belt. If the Belt Tensioner is not holding the Belt Tight Enough you will get the No Start Prob as Stated above. Let me Know! Please Rate my Response, I need all the Help That I can Get! Thanks!
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Many shade tree guys will tell you run a switch and direct wire. This is not a good answer. The circuit includes an oil pressure switch which kills the pump in the event of an accident, to prevent the pump from running and feeding gas to a possible fire. There is also a bypass to supply juice while cranking. Fix it right! Check fuel pump fuses (sometimes two) and fuel pump relay.
Is the battery new? Does it start fine until it sits overnight? Have you checked the alternator? Does the battery have sufficient cold cranking amps,dead cell? Is an interior light staying on, glove box light? Do you have an aftermarket stereo with an amp?
One problem at a time please. Let's get the engine running All the time! First, it seems that the battery is weak, perhaps old and past its prime (thus the jumper cables worked). Or, maybe you just need to clean off the battery terminals on the battery and the connecting cables. When did you replace the plugs, wiring harness, distributor cap and rotor last? Perhaps just cleaning them up will do the trick. Also, check that the grounding cables all over the engine compartment are clean and tight.
Try cheking the starter connections, the battery to motor ground, battery to body ground and motor to body ground strap for corrosion. They can be corroded under the bolts and cause all kinds of electrical problems.
Cranking and fuel issues are two separate things. Check age of battery and voltage across terminals. Does it always crank as long as you hold the key but not start? If cranking okey,check fuel pressure,key -on,cranking,or if it does start. Check battery cables for corrosion,also inside cables. Do,a voltage drop test on both cables.. Need a meter or just have a shop pick it up and take care of it.
sounds like you have a good battery, get the car started put a voltmeter to wire connected to the back of your alternator. if you have at least 13.25 volts you have a good unit if any lower replace the alternator the click sound you are hearing comes from your relay it is getting low voltage from the battery. because the battery has no juice caused by a bad alternator