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2001 Town car, 4.6, crank but no start. Crank sensor

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replaced, fuel pump replaced (...
2001 Town car, 4.6, crank but no start. Crank sensor replaced, fuel pump replaced ( fun! ), pump fuse good, relays good, pressure to fuel rail, tries to start! The only odd thing to me is the SES light will not self check. It had been working but it will not come on. Scanner picked up no codes. Pats light goes off with the key in the on position... Diode checked just for giggles!! I'm stumped....
Submitted: 2 years ago.Category: Lincoln
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Answered in 4 minutes by:
1/17/2016
Lincoln Mechanic: John Vieira, Mechanic replied 2 years ago
John Vieira
John Vieira, Mechanic
Category: Lincoln
Satisfied Customers: 78
Experience: Certified and Experienced Diesel Mechanic with the same company since 1982.
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SES light does not prove out at all? Does not come on at all?

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Lincoln Mechanic: John Vieira, Mechanic replied 2 years ago

If that light does not prove out then the ECM is not getting powered up.

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Customer reply replied 2 years ago
Good morning John,
Thank you for your help on this Sunday. It doesn't come on at all. No shelf check, not on solid while cranking.
Lincoln Mechanic: John Vieira, Mechanic replied 2 years ago

Good Morning to you too,

Have you checked the PCM relay?

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Lincoln Mechanic: John Vieira, Mechanic replied 2 years ago

I may have to jump on the Ford website and find out which relay it is.

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Customer reply replied 2 years ago
I've got the owners manual but that's it. I'll check that relay. I can hear them clicking when the key is turned on but with all of them together like that I may be hearing the wrong one.
Lincoln Mechanic: John Vieira, Mechanic replied 2 years ago

The best thing to do is to find the one for the ECM and then exchange the relay with another relay.

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Lincoln Mechanic: John Vieira, Mechanic replied 2 years ago

PCM power relay fuse #4

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Customer reply replied 2 years ago
Relay works. Ohms drop to 0. I can't find a ECM relay location
Customer reply replied 2 years ago
Swapped it just to be sure.
Lincoln Mechanic: John Vieira, Mechanic replied 2 years ago

And still no light?

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Customer reply replied 2 years ago
No sir. No light
Lincoln Mechanic: John Vieira, Mechanic replied 2 years ago

Sir, the only thing I can not really understand is that you are stating that you can not find the ECM relay location but you said relay works and Ohms dropped. We need to be sure to find the right relay.

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Lincoln Mechanic: John Vieira, Mechanic replied 2 years ago

And swap it out with another one.

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Customer reply replied 2 years ago
Sorry. I was looking at the box relay not #4. It's swapped. Still no light
Lincoln Mechanic: John Vieira, Mechanic replied 2 years ago

Fuse #4 is what the chart says for your vehicle. there are 5 relays in a row, it is the center one.

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Customer reply replied 2 years ago
Okay. It checks out as well. Still no light
Customer reply replied 2 years ago
Multi-function switch/ hazard fuse was blown under the dash. Replaced.
Lincoln Mechanic: John Vieira, Mechanic replied 2 years ago

Either you have a broken wire between the relay and the PCM, a burnt out bulb, or a bad PCM (ECM). To check for a burnt out bulb, the dash needs to come out and physically check the bulb.

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Lincoln Mechanic: John Vieira, Mechanic replied 2 years ago

Did this car just not start one morning or driving down the road and it died
?

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Lincoln Mechanic: John Vieira, Mechanic replied 2 years ago

Have you got fuel pressure?

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Customer reply replied 2 years ago
Its got fuel pressure at the rail but I don't have a gauge to check out how much. It's done this once before. Drive some where ,car runs crappy and after you turn it off run into the store it won't start.
Customer reply replied 2 years ago
I figured fuel pump but that didn't pan out. It was fun to replace though...
Lincoln Mechanic: John Vieira, Mechanic replied 2 years ago

It has got have 40 pounds of fuel pressure for it to run. Is there any way you can borrow a fuel pressure gouge or something, because we have to know what the pressure is at? Replacing the fuel pump does not necessarily tell us we have fuel pressure because the filter could be 100% plugged, or anything along those lines. Do you hear the pump come on? Take the gas cap off have somebody else turn the key on stick you ear next to the filler neck, and see if you can hear the pump come on?

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Customer reply replied 2 years ago
Well I got it to start! It revs then drops then revs then dies. It back fires a bit. I can hear the pump activate. I changed the filter with the pump.
Customer reply replied 2 years ago
For giggles I changed the cam shaft sensor.
Customer reply replied 2 years ago
P1000, P0232, U1262?
Lincoln Mechanic: John Vieira, Mechanic replied 2 years ago

Hello, sorry I was unavailable yesterday. The P1000 code just means that the codes have been cleared. A U1262 is a communication fault between different modules in the vehicle. I'll have to get back to you on those two after I look up more information. I am leaning towards a fuel pressure issue, but let me get back back to you in a little while. Thanks.

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Customer reply replied 2 years ago
Finally got a good gauge with a proper ford adapter. Turn the key to on and the pressure reads 32. Just incase I'm cleaning the MAF, EGR ports and IAC tomorrow morning and trying to start it again.Matt
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