Help! I had to PUSH the Lincoln Home.

DUVALINCOLN

DUVALINCOLN

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LVC, I need your expertise dearly. I noticed Thursday night my 2004 Lincoln LS was reading fuel computer data error. Friday morning I noticed it was still there but hey, I had to get to and from work. Later that night I decided to treat myself out after a long Friday. On the way home the car seemed to lose power and the lights flickered off and on. The next thing I notied the car had cut off but continued to move due to velocity. I tried to cut it back on but the car would not start. I walked home to get the gas tank which had about a $1.50 worth of 89 gas in it but, what other choice did I have. The car stillwould not start. I happend to have my code reader in the car and the code that read out was P0190 Fuel Rail Pressure Sensor Circuit Malfunction. I ended the night pushing my car the rest of the way home to safety. it's in the shop now and they are saying it will be Monday before they can get to it. I just wanted a head start on what the problem may be before I get it from the shop. Please Help!!!!
 
How many miles? You say you got a gas can.. Were you on empty? Did you hammer on the throttle at all before this happened?

I guess based on your information it could be:

fuel pump
fuel filter
fuel pressure regulator
faulty fuel pressure sensor.

I am not a mechanic, I'm just guessing right now.
 
DUVALINCOLN said:
P0190 Fuel Rail Pressure Sensor Circuit Malfunction[!
Click to expand...

There's your answer.

But if your lights were flickering, you may want to look at the battery. These electronics laden cars are very sensitive to under/over voltages.

If you have a bad battery/charging system, it may have screwed up the FRPS sensor return values.
 
Forgot to also mention that. Alternator flicker can trigger that code as well.
 
pektel said:
How many miles? You say you got a gas can.. Were you on empty? Did you hammer on the throttle at all before this happened?

I guess based on your information it could be:

fuel pump
fuel filter
fuel pressure regulator
faulty fuel pressure sensor.

I am not a mechanic, I'm just guessing right now.
Click to expand...

I'd change the list a little bit.
There is no fuel pressure regulator, so that couldn't be the problem.

The other three guesses are good ones.

I would add the REM and the Jet pump assembly as suspects. A problem with either one of those would explain the fuel data error, the shutdown, and maybe the PCM just thought the fuel pressure sensor was bad when it stopped getting any fuel pressure to sense. Just a thought...
 
I was wondering about the regulator, joe. I've heard there was a regulator that was part of the fuel pump assembly, but didn't know for sure.
 
pektel said:
I was wondering about the regulator, joe. I've heard there was a regulator that was part of the fuel pump assembly, but didn't know for sure.
Click to expand...

My understanding, is that fuel pressure is regulated electronically. The PCM reads the fuel pressure from the fuel pressure sender. If it is low then it sends a command to the REM to apply more power to the fuel pump. If it is high, then it sends a command to the REM to reduce the power to the fuel pump. That said, there may be some sort of pressure relief device in the fuel pump assembly. There is also some sort of metering device that determines how much fuel is pumped to the jet pump in the other half of the tank.
 
Thanks LVC for this great information I will have available when the shop contacts me back. Now I don't feel so out of the loop when he starts to explain the problem.

Just additional information. I have about 98,000 miles on the lincoln. The fuel filter was recently replaced. I had the fuel pump and sender units replaced by the dealership around 11/2008 and the car battery was recently replaced by dealership on 3/2009.

So if it is indeed a faulty fuel pressure sensor, would this be the sensor that is on the top of the engine that should be pretty easy for me to replace?
 
year? engine?

common man, gives us the engine and year would ya? Your alternator might have gone bad, charge up battery and see if it starts and runs.
 
still unclear. Did you run out of gas? if so, I thought the LS had something that needed to be reset if you ever run completely out of gas?
 
That is correct the LS is a V8, 2004. I'm don't believe I ran out of gas when the car stopped but I can't be too sure b/c the fuel computer data error was throwing off the gauges.

Update!!! I recieved a call from the shop today and the guy explained that he was getting a few codes from the car this morning. He stated he doesn't think it is the fuel rail pressure sensor but one thing he get find wrong was the inertia switch looks to have been set and will not reset so he is ordering another first and then will see what happens after that. LVC any ideas? What is the purpose of the inertia switch? Is it the same switch used to reset if gas runs out of the LS? Thnank LVC.
 
DUVALINCOLN said:
That is correct the LS is a V8, 2004. I'm don't believe I ran out of gas when the car stopped but I can't be too sure b/c the fuel computer data error was throwing off the gauges.

Update!!! I recieved a call from the shop today and the guy explained that he was getting a few codes from the car this morning. He stated he doesn't think it is the fuel rail pressure sensor but one thing he get find wrong was the inertia switch looks to have been set and will not reset so he is ordering another first and then will see what happens after that. LVC any ideas? What is the purpose of the inertia switch? Is it the same switch used to reset if gas runs out of the LS? Thnank LVC.
Click to expand...

The inertia switch is a safety switch. It should only trigger if the car suffers an impact. The purpose is to cut off fuel flow because a fuel line may have been ruptured in the crash. It's in the driver's kick panel. Normally, it is reset by pushing down on the plunger.
There is no need to hold up the repair waiting for the switch. It can be safely bypassed to continue the testing and diagnosis of the car.
 
Okay, I just remembered that prior to the fuel computer data error coming on, earlier that day i bumped the car pretty hard on a high speed bump. With those low profile rims and tires I didn't have room to spare and the bottom of the car came down hard on the speed bump. As a matter of fact I got out the car to look and make sure there was no damage b/c it bumped so hard? Could that have set off the inertia switch? I guess the shop wants to make sure they are on the right path before replacing items.
 
If it were, you wouldn't have been able to drive away. No fuel = no go.

Not saying that it wasn't a contributing factor to your problem, but I'm pretty sure it didn't trip the inertia switch
 
watch those speed bumps with the LS

I don't believe the LS likes speed bumps!
 
Well fellas, problem solved. had to replace the fuel rail pressure sensor adn the initeria switch, cost about 470.00 with labor.
 
Wow. did they give you a donut cushion so you could sit down without too much pain?
 
I know right, now the service park brake light is on but has been coming of and on for a while. Now it's just one. any ideas on how to fix, service or turn off?
 
DUVALINCOLN said:
I know right, now the service park brake light is on but has been coming of and on for a while. Now it's just one. any ideas on how to fix, service or turn off?
Click to expand...

Ah-Ha, your other post didn't mention that you've been experiencing this. There's a good chance that battery or alternator replacement is in your near future.
 
sorry about your expense!

Yes, the Lincoln LS is a money pit, but think of this as a cheap insurance policy against being trapped in the car and burning to death. Well worth the investment.......:)
 
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