Question about 2001 Lincoln LS

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Getting no fuel to the engine. some one zero out the computer. could not read the codes if any.

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  • Lincoln Master
  • 5,368 Answers

Fuel pump? If you don't hear it, you need to check if the pump has failed, or if there's a problem in the circuit to the pump. To check, pull off the fuel pump tank connector at the gas tank, and check for power on the fuel pump wire while a helper is cranking the engine over. If you have 12 volts there (can use a voltmeter or a test light), the pump has failed and need replacing. If no power when cranking engine, the fuel pump circuit will have to be diagnosed. You will need a wiring diagram of the pump circuit. It is a fused circuit, so first check the fuse. If fuse is good, find the fuel pump relay and hold a finger lightly on it while helper turns the key to on. The relay should click when key is turned to on. If it does, pull the relay out and check that the power feed for the pump is available on one terminal where the relay plugs in. Use the test light probe and check all terminals-one should be "hot at all times". If none have a signal (key is OFF), then power is lost between battery and that relay terminal. From here on, you will need a wiring diagram...Good luck.

Posted on Aug 01, 2013

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1 Answer

What causes the engine to buck and jump after the engine warms up?


There could be several things that would cause the symptoms.

First thing, is the "service engine soon" light on?

If it is, then you need to get any stored codes to help narrow the possibilities down. It would really be a help to you if you could get a scan tool that will actually show live data.

The reason I say that is, there are sensors which can cause your Buick to run rough, stumble, and belch after it warms up and not "throw a code".

The one sensor I know will do this is the coolant temperature SENSOR.

IF that particular sensor goes bad, it will NOT set off the service engine light, but it will tell the main computer that the engine is colder than it actually is. (It will usually default to tell the computer the engine temperature is -40° . Yup, you read that right. 40 degrees below zero.

When the computer thinks the engine is that cold (whether it's warmed up or not) it will keep the fuel mixture like the engine is cold. Sending signals to the injectors to keep dumping more fuel until the engine is warmed up. Problem is, according to the temp SENSOR, the engine is always cold so the 'puter keeps dumping the fuel to try to get the engine warmed up.

This is only one example and I'm NOT trying to encourage to "fire the parts cannon" at your car (replacing parts in hopes you fix the problem).

What I am trying to get you to do is, even if there is no service engine soon light, is to get someone to hook a scan tool that can read live data on an OBD I (on board diagnosis, 1st generation) to see if there is a sensor not giving the proper information to the computer.

Hope this helps.

Oct 10, 2014 | 1992 Buick Century

1 Answer

My 94 gmc k1500 starts and runs good until it


Being your truck is a 1994, that means it's the OBD I operating or computer system. Now, if you know of someone that has a scanner that can read OBD I that would be great. What you are looking for is a scanner which can read live data as the engine is running, NOT simply a code reader.

You didn't say that the check engine or service engine light was on, but what I suspect is wrong won't "throw a code" so it doesn't matter if the light is on or not.

I highly suspect the coolant temperature sensor, NOT the coolant temperature sender, is bad.

I ran across 2 vehicles back to back that had the same basic symptoms you have described. One was an OBD I system, the other was OBD II. Both vehicles showed during a 'live scan' that the coolant temperature sensor was telling the computer the engine was -40°!!! Yup, MINUS 40°. This caused the engine to be getting fuel dumped into it like it was 40° below 0, even after the engine was warmed up.

The coolant temperature sensor tells the computer that the engine is cold, getting warm, or is completely warmed up.

As the 'puter is getting this info, it adjusts the air/fuel ratio, timing, etc. to make the engine run the most efficient.

The computer can only go by the info being fed by the sensors, oxygen, coolant temp. manifold air pressure, throttle position, etc.

If any of these sensors go bad and start 'lying' to the computer, the 'puter don't know the difference and adjusts according to the info received. Some of the sensors, when bad, WILL throw a code.

The coolant temperature sensor will NOT throw a code but it will cause a poor running vehicle.

Change the sensor. It should cost less than $10.

Hope this helps.

Oct 04, 2014 | 1994 Chevrolet K1500

1 Answer

Temp sensor


I'm not a 100% but it sounds like your camshaft position sensor went bad then caused the other codes to come up because the camshaft position sensor tells the computer how much gas it needs. So it started a chain reaction with the fuel level sensor, fuel temperature sensor, and knock sensor codes. The Fuel temp. sensor helps the engine to know how much fuel to inject as well depending on the temp. of the fuel. The fuel pressure sensor senses the amount of fuel in the fuel rail by reading the internal pressure of the rail, so that's what leads me to believe that it's your camshaft position sensor. Particularly if that was the first code that came up. Hope this helps you.

Aug 27, 2013 | Nissan Xterra Cars & Trucks

1 Answer

Ihave a problem with power cutting out for several seconds causing the lights going out,transmission will downshif,gauges will drop to zero ,raidoa/c heater fan will cut out gauges will come back on


The Engine and Automatic Transmission (not applicable to manual transmissions) in this vehicles drive train are fully electronically controlled by a computer called the PCM and TCM (Power Train Control Module, Transmission Control Module). When a problem like this or other drive-ability related problems occurs the computer stores a record of the problem (there are of course some exceptions to this, like the fuel pump, engine coolant temperature sensor and MAF sensor for instance) in the form of a fault code in its memory, to read these fault codes you must have the systems memory scanned with a special tool. Once the fault code(s) are read you then must perform the appropriate diagnostic testing to find and resolve the problem(s) DO NOT REPLACE ANY PARTS UNTIL A TRAINED TECHNICAIN HAS DIAGNOSED THE PROBLEM TO AVOID SPENDING YOUR HARD EARNED MONEY ON PARTS THAT MAY NOT CORRECT THE PROBLEM. Also always check fuel pressure for correct spec for your make and engine type.




Oct 01, 2012 | 2003 Ford Focus

1 Answer

1997 Nissan D21 hardbody pickup distributor problem


Hello
The engine and automatic transmission in this vehicles drive train are fully electronically controlled by a computer called the PCM (Power Train Control Module). Whenever a problem like this occurs the computer stores a record of the problem (there are of course some exceptions to this, like the fuel pump, engine coolant temperature sensor and MAF sensor for instance) in the form of a fault code in its memory, to read these fault codes you must have the systems memory scanned with a special tool. Once the fault code(s) are read you then must perform the appropriate diagnostic testing to find and resolve the problem(s) DO NOT REPLACE ANY PARTS UNTIL A TRAINED TECHNICAIN HAS DIAGNOSED THE PROBLEM TO AVOID SPENDING YOUR HARD EARNED MONEY ON PARTS THAT MAY NOT CORRECT THE PROBLEM

Aug 09, 2012 | 1997 Nissan Pickup

1 Answer

VW Golf Mk4 1.4 16V AHW, backfires when cold. There were three broken wires, one goes to the EGR, one to the throttle body and one to the mass air flow. New throttle body, Coil pack and wires tested....


Aparently, a "full diagnostic" has NOT been done. If this statement were true, you would have found the cause of your problem.

With that said, backfiring is usually caused by damaged/leaking exhaust valves. Have you performed a compression test on this engine?

If the computer is "getting the wrong reading of the air/fuel mixture", then you should be getting oxygen sensor and/or fuel trim codes.

The coolant temp sensor does not cause the computer to get the wrong reading of the air/fuel mixture, it causes the computer to get the wrong reading of the engine coolant temperature. Although this will affect how much fuel the computer gives the engine, it does not cause it to get wrong readings of the mixture.

Just so you know, "diagnostics" consist of a WHOLE LOT more than hooking up a code reader and pulling codes from the engine computer.
People think that an automotive repair technician simply plugs in the "magic box" and replaces all the parts the "computer" tells him to replace...I WISH it were that simple!

Mar 18, 2012 | Volkswagen Golf Cars & Trucks

1 Answer

Fuel guage reads empty and low fuel light is on


{: ) If the fuel tank is actually low in fuel, this will be a normal thing. You can also check for fuel leaks. But for example, the last time you remembered it was at half level and after driving for a few miles, you made a stop for some reason, and off course you were expecting that you still have more fuel remaining to take you home or elsewhere. When you start the car again, the gauge suddenly reads empty. This is a classic symptom of a failing fuel level sensor that needs to be replaced.
An engine light may or may not come on. A better option is to check the vehicle using a scan tool to retrieve and clear codes that may have set, Usually, when the engine computer detects a fault in the fuel system, it will set a code, and the fuel gauge will default to zero regardless if your tank is actually full or half. The scan tool can also monitor and determine if the fault is from your gauge, the fuel level sensor, or from the engine control module.
Wiring problems, although very unlikely, can be a possible cause too especially if the vehicle was previously serviced or repaired, and some wire or connector could have been knocked off accidentally or neglected afterwards.

Aug 02, 2011 | 2006 Chevrolet Trailblazer

1 Answer

Check engine light comes on, diagnostic reading says 1810


First Character - System

The first character identifies identifies the system related to the trouble code.

  • P = Powertrain
  • B = Body
  • C = Chassis
  • U = Undefined
Second Digit - Code Type

The second digit identifies whether the code is a generic code (same on all OBD-II equpped vehicles), or a manufacturer specific code.

  • 0 = Generic (this is the digit zero -- not the letter "O")
  • 1 = Enhanced (manufacturer specific)
Third Digit - Sub-System

The third digit denotes the type of sub-system that pertains to the code

  • 1 = Emission Management (Fuel or Air)
  • 2 = Injector Circuit (Fuel or Air)
  • 3 = Ignition or Misfire
  • 4 = Emission Control
  • 5 = Vehicle Speed & Idle Control
  • 6 = Computer & Output Circuit
  • 7 = Transmission
  • 8 = Transmission
  • 9 = SAE Reserved
  • 0 = SAE Reserved

Mar 03, 2011 | Chevrolet Chevy Cars & Trucks

1 Answer

HAVE SPARK DUMP FUEL WONT START SAT OVER NIGHT TRK FIRED RAN A LITTLE AND WONT START AGAIN


REPLACE FUEL FILTER FIRST CRANK ENGINE.WHEN IT DIES AGAIN GET A FUEL PRESSURE READING WITH ENGINE OFF.IF FUEL PRESSURE REAL LOW OR ZERO FUEL RELAY FAULTY OR FUEL PUMP RELAY.FAULTY.

Aug 30, 2010 | 1991 Ford F150

1 Answer

The gas gauge on our 1995 Jaguar XJ-6 has been malfunctioning for several months. It can read zero or full or anything in between, even after a fillup, but usually reads zero until the car burns some of...


There is a FLOAT in the gas tank that bobs up & down in the gas in which the gauge gets a signal from to let u know your fuel level. they can go bad & send erratic readings to the gauge. (like a toilet bowl float) That is the most common cause of your problem. Good Luck

Mar 18, 2017 | 1995 Jaguar XJ6

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