Question about 2004 Lincoln Navigator

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Code p1237 on a 2004 lincoln aviator

Vehicle stalls but will restart fuel pressure good fuel pump and filter replaced,has cod`e p1237 may run great for 3 days then act up

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  • Lincoln Master
  • 1,207 Answers

The P1237 means Fuel Pump Secondary Circuit Malfunction.
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Posted on Nov 05, 2012

6 Suggested Answers

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  • 2 Answers

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Posted on Jan 02, 2017

  • 151 Answers

SOURCE: car runs rough at idle

clean out ur throttle body, just follow the hose from the air filter to the throttle body. Need 2 people to do this. Don't remove the hose completely from the throttle body. Just enuff to be able to spray ur intake cleaner into the throttle body. Do this especially if its worse when the motor is hot, as this would confirm the problem.

Posted on Sep 04, 2008

  • 1 Answer

SOURCE: 2004 LINCOLN AVIATOR

I just changed the fuel filter on my 2003 Aviator and it was a pain. Aftwer looking and looking I finally found it. It is located under the truck at the center of the front crossmember behind a shield. Two bolts hold the shield and there are two quick release hoses on the fuel filter itsself. Good luck!!!

Posted on Mar 02, 2009

goalie39
  • 469 Answers

SOURCE: keyless entry code for 2003 lincoln aviator

Every car different, call an auto rescue or towing company, the trucks are usually equiped with slim jims, that can be used to gain access to your vehicle.

Hope this helps.
Ed

Posted on May 05, 2009

chuck943
  • 783 Answers

SOURCE: Where is the fuel filter

To relive the fuel pressure look under hood on drivers side front of engine locate the fuel line where it goes into the fuel rail,trace it back a little ways and you will see a schrader valve for checking fuel pressure. Remove the plastic cap and take something like a small screw driver and press the pin in center to release pressure.
To replace fuel filter you have to remove left front wheel and inner plastic fender panel and fuel filter is located behind this at the back area.

Posted on Jun 04, 2009

  • 5 Answers

SOURCE: 1997 lincoln town car 4.6 with a p0430 fault code

I will make an assumption here, we know what the root word means. This code was extracted from the computer by? What this is telling you one of 2 things: The Bank 2 oxygen sensor down stream of the catalytic converter (there are 2 converters, one for each bank of cylinders on the 4.6ltr engine) is bad and/or that the Bank 2 catalytic converter is no longer doing the job it was designed to do. Simply, Catalysts wear out. They are good for approx 100,000 miles (as required by Federal Law). Again, I assume that the reason the intake manifold was replaced was because it had a crack in one, or more, of the runners? (part that feeds the head of a manifold). It may have taken a while to find this as being the cause of why the car running incorrectly, maybe rough. This means, that during the time the car was being driven with the problem, the amount of unburned, or not within spec exhaust gases, coming off the side of the engine affected by the intake issue was higher than normal. This out of balance level of exhaust gases were being dumped into the converter on that side of the engine, thus causing the converter to have to run hotter, work harder, or even at the time the gas was being processed through, causing deposits to be formed in the converter, thus shortening it's life span. The Bank 1 side of the engine, apparently, did not have the issue and it's catalytic converter's life was not affected. I hope this makes sense to you.

Posted on Aug 19, 2009

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4 Answers

2004 Lincoln aviator looses fuel pressure after it has been parked for 4-6 hrs. have to turn the ignition on (not Start ) 7-10 times then the vehicle will. start. replaced the intank fuel pump.fuel filter...


i would check the fuel pressure. see how fast the pressure goes down. most cars i have worked on it dosnt take that many key-ons to get fuel. a fuel pressure regulator could be leaking. there is a check ball in the pump to keep the fuel from draining back. since the pump is new, i would check the regulator and poss. the injectors. its poss. for an injector to leak or stick open

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2000 lincoln continental looses power is steep hills and a few days later it stalled out like it's not getting gas has full tank ..need help


Most likely, you have a clogged fuel filter. Start there.
If replacing the fuel filter does not solve the issue, test for proper pressure at the fuel rail, and replace the fuel pressure regulator and/or the fuel pump, as indicated. Also, check the fuel intake strainer to be sure it hasn't become clogged with debris and, if it has, replace ALL FUEL in the vehicle.
I would recommend avoiding ethanol blend fuel for your vehicle, as it is not designed to use it (causes issues).

Oct 03, 2014 | 2000 Lincoln Continental

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Codes too lean, stalls when warm. replaced o2,MAF,filter, plugs and coils


Check for air leaks with a water spray from an old spray bottle. Run the engine and spray around gasket seams and Vacuum lines.

Lean code means too much air, not too little fuel. Engine is dumping fuel to get correct fuel ratio.

Mar 22, 2014 | 2005 Lincoln Aviator

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2000 Lincoln Ls Stalling While in Motion


Check the water temp sensor. I'm not too familiar with Lincoln, but on GM vehicles a bad water temp sensor will tell the computer that the engine is cold causing it to dump more fuel than it really needs thus flooding the engine. The only way to start the engine is to open the throttle body enough to get the air/fuel ratio right so it will burn. If that doesn't work look at your EGR system to make sure the valve isn't sticking. It should move freely. If it's binding then it can cause similar issues, though not as likely.

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02 sable stalls when warm.can get a mile when cool outside.seems lean.new fuel pump,filters are good,replaced crank and throttle sensors maf is clean no stickage,got a fuel rail pressure connector cod


That trouble code is probably for low fuel pressure not a connector.
What is the actual trouble code, and have you checked fuel pressure with a gauge ?

Jan 18, 2013 | Cars & Trucks

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1994 s-10 2.2 replaced fuel pump truck ran great for an hour, then it stalled and now there is no fuel pressure


check wire connections to fuel pump see if you got power to pump.If you do not fuse and relay.

Apr 10, 2011 | Chevrolet Chevy Cars & Trucks

3 Answers

What is the correct fuel pressure at the rail for a 2004 Lincoln Aviator?


Disconnect the electrical connection to relieve the system's pressure. Start the Navigator and let the engine run until it stalls from lack of gasoline. Turn off the ignition, reconnect the pump's electrical connection and disconnect the negative battery cable.
  • Step 2 Detach the fuel pressure sensor vacuum hose. Check for fuel in the line. If there is fuel present in the line, the fuel delivery problem is likely caused by a faulty fuel pump pressure regulator. If there is no fuel in the line, reattach the vacuum hose and continue with the fuel delivery diagnostic.
  • Step 3 Twist off the fuel pressure test port cap and secure a pressure gauge to the fuel pressure valve. Reconnect the negative battery cable and start the engine. The pressure gauge needs to read 45 psi when at wide open throttle. High pressure readings indicate a malfunctioning pressure regulator. Low pressure readings indicate a clogged fuel filtermag-glass_10x10.gif or a broken fuel pump.
  • Step 4 Cut the engine. Relieve system pressure and remove the negative battery cable again so you can safely remove the fuel filter to check for clogs.
  • Step 5 Loosen the filter fittings and unhook the fuel lines from the filter. Undo and remove the bracket on the fuel filter.
  • Step 6 Inspect the filter for clogs and replace it with a new one if necessary. If there are no clogs, the fuel delivery problem is probably a faulty fuel pump.
  • Mar 07, 2010 | Lincoln Aviator Cars & Trucks

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    2005 lincoln aviator won't start it has good fuel pressure new sparkplugs sounds like it wants to start but doesnt


    Did you check the Fuel pump shutoff switch? If you hit something not too hard, or some hit you when you werent in the car, it would shut the fuel pump off.

    Apr 25, 2009 | 2005 Lincoln Aviator

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    My 2000 monte carlo ss with a 3800 engine tends to start and stall about six times befor running, I pulled 3 codes 0108, 0404, and 1404 from the the computer .


    I believe the codes are emmission related. I would have the fuel pump pressure checked. The fuel filter and fuel pressure regulator seems to be the failrue. The restarting of the engine several times is making the system build up enough pressure to start running . I would take to a shop to have the fuel pressure checked.

    Mar 15, 2009 | 2000 Chevrolet Monte Carlo

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