Crank no start

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Crank no start

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Crank no start Mechanic's Assistant: Will the headlights turn on? Is the battery fully charged? Yes Have replaced crankshaft position sensor, distributor cap and rotor [ignition coil](/topics-ignition-coil-chevy/), and di...

Crank no start Mechanic's Assistant: Will the headlights turn on? Is the battery fully charged? Yes Have replaced crankshaft position sensor, distributor cap and rotor [ignition coil](/topics-ignition-coil-chevy/), and did passlock 2 relearn Mechanic's Assistant: What is the make/model/year of your car? 2003 chevy s10 4.3l vortec is Vin 'x' Mechanic's Assistant: Are you fixing your S10 yourself? What have you tried so far? I listed it in second text. And yes myself Mechanic's Assistant: Anything else you want the Mechanic to know before I connect you? HELO HELP Mechanic's Assistant: Hi. How can I help? Joke

Answer 1

Ok, with all that you have replaced, I would check the fuel pressure. It's possible the fuel pump failed when it ran out of gas. Take some carb cleaner or starting fluid and spray it directly into the throttle, then crank the [engine](/topics-engine-chevy/) and see if it runs for a few seconds, if it does, then I would replace the fuel pump.

Answer 2

Do you have a test light?

Answer 3

Ok, chekc the pink wire at the coil for power with the key on and let me know please.

Answer 4

Do you have power on the pink wire? If you replaced the crank sensor and it's still coding the crank sensor, then you have either got a bad crank sensor OR there is a wiring issue from the sensor to the computer. I realize some of these tests might be repetitive, but I haven't worked on the truck so I have to start somewhere.

Answer 5

Sorry, can you test the wiring to the coil please? The pink wire, if there isn't power to the coil you won't get spark and you will continue to get the code for the coil

Answer 6

I know that! Is the battery voltage only 10 volts?

Answer 7

Ok,, take the test light and check out the white/black striped wire. Do this with the engine cranking, you should see the light flash as you crank it

Answer 8

It is, but as long as it's the same voltage as the battery, it's good to go. You may have to put the clamp on the test light on the positive post for the test I can't remember to be honest.

Answer 9

Yeah, it can be a little bit tricky, but hopefully we can see what's happening.

Answer 10

Ok, which relearn did you try on the passlock. It appears that the ignition module is working like it should The flash means there is pulse going through the coil. From the module, this should cause spark. How did you confirm no spark?

Answer 11

Well, I would like to know how no spark was confirmed and if you are using the 30 minute passlock procedure or 10

Answer 12

If it's set back to the factory, I would attempt the relearn. I really don't see a reason for no spark. Pull a wire out of the cap and set it next to the tower and see if any spark jumps when you crank it.

Answer 13

yes, the area you pulled it from, like I said, I see zero reason for the lack of spark unless you got a defective coil

Answer 14

Ok, from what I see, you have what is needed for spark. Make sure the rotor is spinning when cranking the engine.

Answer 15

yes, just take the cap off and set it aside and see that the rotor is spinning, if it is, I am going to say try a different coil, the one you have may be defective.

Answer 16

Ok, you can post what you find here and I will get it. Even if I am not on, it will be here when I am. Take care.

Crank no start

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