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Ford Taurus/Mercury Sable Sedans Pre-2008

3389 messages,  Last post on Jan 21, 2011 at 11:46 AM

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What is this discussion about? Ford Taurus, Mercury Sable, Sedan

Messages Page 340 of 340

#3386 of 3389 06 Taurus Misfire Dark Smoke, Engine Light On, 9 Codes by ynwia1

May 02, 2010 (8:29 pm)

I have a 06 Taurus SE, 3.0L 12v, Engine Code U. 40K miles. Bought at 27K miles. A few days ago, I drove 3 miles to a store, turned off the engine and this happened.
 
It will start, but the engine vibrates and sputters like misfire. Engine light is one. Hit on the gas and the engine is not running faster or responding. The car would not go either. There is also dark smoke coming out of the tail pipe.
 
This car has a history of hard cold start. I had to try 2-4 times to start the engine in the morning. Meanwhile, I had to hit on the gas pedal hard while cranking the engine. I have got 9 codes:
 
1. P0190: Fuel Rail Pressure Sensor Circuit Malfunction, or Fuel Rail Pressure Sensor "A" Circuit
 
2. P0191: Fuel Rail Pressure Circuit Range/Performance, or Fuel Rail Pressure Sensor "A" Circuit Range/Performance
 
3. P2196: O2 Sensor Signal Biased/Stuck Rich Bank 1 Sensor 1
 
4. P2198: O2 Sensor Signal Biased/Stuck Rich Bank 2 Sensor 1
 
5. P0190(pd): Fuel Rail Pressure Sensor Circuit Malfunction
 
6. P0191(pd): Fuel Rail Pressure Circuit Range/Performance
 
7. P0300(pd): Random/Multiple Cylinder Misfire Detected
 
8. P2196(pd): Undefined code
 
9. P2198(pd): Undefined code
 
Any idea what could cause the problem? How to find out which part to replace? Thanks a lot

#3387 of 3389 Re: 06 Taurus Misfire Dark Smoke, Engine Light On, 9 Codes [ynwia1] by pod

May 05, 2010 (3:40 pm)

Replying to: ynwia1 (May 02, 2010 8:29 pm)
I am not an expert but I will start the speculation and perhaps some real mechanics will be draw in. At first I thought it sounded like a fuel delivery problem. If there was a problem with the fuel pump, the fuel filter (unlikely unless you got a bad batch of gas which had particualtes in it which is said to be unlikely these days because there are filters in the pumps at the gas station), or some constriction before the fuel rail, the low pressures would set off the po190 and po191 sensors and the car would not fire properly and might start hard for a few days before the full failure. The lack of fuel would cause random multiple cylinder misfires po300. The hooker is that the oxygen sensor codes seem to be saying that the exhaust is running rich. I would expect a "lean" code if the fuel delivery was limiting.
 
Let's hope someone can pick it up from there. It is possible to measure the fuel rail pressure. There is a valve just like the ones on a bicycle tire which is very visible about the middle of the engine compartment on the top. It allows measurement of the fuel rail pressure but I am not sure what type of pressure reader it requires (could you use the one you measure tire pressures with?). Another idea is to crank it with the fuel line to the fuel rail disconnected and see if gas squirts out at a good rate. Point it away from the engine compartment with an extension hose if you need to. Be sure the engine is completely cold and nothing is sparking or that may turn out to be a very bad idea.
 
I hope someone who knows something chimes in and educates us both.

#3388 of 3389 05 Sable Duratec Start by rogerb34

May 12, 2010 (4:03 pm)

Car has 34k miles and would start with some cranking and sometimes needed a 10 sec break and recrank.
I removed the Idle Air Valve and flushed with electric motor cleaner. Starts are ok now.
The valve had minor exhaust residue and the cleaner flushed out the area not visible.
Some earlier Sable models had a similar problem.

#3389 of 3389 2002 Mercury Sable Stalls Intermittently by nordite

Jan 21, 2011 (11:46 am)

I have a 2002 Mercury Sable that Stalls Intermittently. I read the computer code and the only one that comes up is P0191. I did have a problem with the gas cap where it would not seal properly. I finally got that fixed and the car has been running good until recently when it will start fine, run fine, then I will stop off at the store, come back out and once again it starts up fine then all of a sudden it sputters and dies. I try starting it a couple of times and it starts right up and runs fine again. The code referres to the fuel rail pressure sensor. Has anyone else run into this? So far I have not found any good answers to what is going on. I suppose it could be some kind of contamination due to the loose gas cap but that seems like a stretch.

Messages Page 340 of 340

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