2001 Mercury Sable No start

Which engine do you have?

3.0 V6 with U in the Vin #

There is two of them knock sensor number one is on left rear of engine bellow the intake manifold. Knock sensor number two is on right rear of engine bellow intake.

Would that have my car in a no start state?

No it wouldn't so it cranks and won't start? Any odes in the computer?

Not that I know of the check engine light never came on. It was starting up fine without any problems then on the same night it wouldn't start. The crankshaft sensors was changed and all the fuses were checked fuel line is clear and the power box was changed still no start.

Do you have spark?What is the actual fuel pressure?

I don't know the exact fuel pressure but it doesn't have any spark

Do you ave injector pulse at the injectors?

What is injector pulse? I know something was stuck inside the fuel line in the front of the car and fuel came out other than that I don't know

The pulse is what opens an closes the injectors its a constant power and pulsing ground while cranking and with then engine running.Do you have a led test light?

We have a standard one that lights up to see what has power to whatever is being tested. Is that the type of tester your speaking about.

Yes you can use that with the key in the run position all the red wires going to the injectors should have power.Then the other wires should have a pulsing ground while cranking?

Ok what else can I look for to find the problem, and what other reason will my car not start?

So do you have injector pulse and power to the fuel injectors?From that info I will give more tests.You have no spark that's one reason it doesn't start. Plus we don't know if we have the proper fuel pressure to start an run.I can't test an look at things that's what your doing for me.

I will have to wait until tomorrow to finish checking. Once I check all the red wires I will contact you with results.

You have to also check the other wire for a pulsing ground.

For the pulsing ground how will I know if I have it or not? I can get someone to try to crank the car while I'm looking at the wires, but I need to know what I'm looking for.

Take the alligator clip hook it to the positive side of the battery and test the none red wire at the injector connector crank the engine the test light should flash.

There is power going to all the wires on the fuel injector

Your not making this easy for me lol so the red wires have power the other ones don't?What about the nonered ones do they have a plusing ground? I asked about that plus explained in detail how to check.Please follow my lead.

I checked the red wires by turning the key in the on position. With all the other wires I checked those by putting the clip on the battery and those showed power also. I'm sorry I should have said that before, but I did follow your directions step by step.

Was I suppose to check the non red wires with the key in the run position also, because I only hooked up the clip to the battery, but with the red wires I checked them with the key in the run position.

Are you reading my replies?Because I posted in a earlier reply how to check the non red wires to the injectors and what iam looking for.You really need to read what I post or reread if need be because its hard enough to help someone fix there car over the internet but then have to repeat myself over and over again makes it even harder.I try to help as many people on here as I can so when I have to keep repeating myself over and over that takes away from others I could be helping.I have cut and pasted from a earlier reply to you what to do with the non red wires to the injectors.Take the alligator clip hook it to the positive side of the battery and test the none red wire at the injector connector crank the engine the test light should flash.

That's the part I didn't do was crank the car while checking them. Please don't get disgusted with me I'm not really good with being under the hood of a car, but I am trying so please don't stop helping me

Iam not going to stop helping you just please read the replies I posted.

Ok thank you very much

Good evening I checked the injector pulse as you said and the light was blinking I'm guessing that means the non red wires are also good. The camshaft sensor was also changed just to be on the safe side

I posted how to check the pulse signal to the coils the red wire to the coils with the key in the run position should have power to it?Then hook the alligator clip to the positive side of the battery then check the other wires to the coils the light should flash while cranking?

We did those test and they all showed power going through those wires. I'm trying to get the information off of the article you sent but it will not allow me to go pass the steps you have already walked us through. What should we check next?

So the red wire has power and the other 3 wires has a pulsing ground while cranking?

Yes that is correct

Then if you have no spark looks like your coil pack assembly is bad.So you have no spark to any of the cylinders?

There is no spark to any of the cylinders, and it's funny because that was the first thing that was changed out on the car, but I know the could have defects also brand new. I will buy another one and see what happens from there

If the terminal tightness is good everything else is there for spark.