Question about Mercury Sable
P0191 is fuel rail pressure sensor or circuit low input. This indicates that fuel pressure is too low or the sensor is faulty or the circuit is at fault The fuel pressure should be tested to see if it is spec.and circuit test preformed the location of this sensor and testing needed to make an accurate repair requires some degree of skill and someone that is comfortable doing this type of diagnostic repair
Posted on Jan 04, 2013
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Posted on Jan 02, 2017
trace the big cable that came from the positive terminal of your battery. at it's end is the starter.
or if it passes trough a big relay, then there is another big cable from that relay that would go down to the side of the engine, either left or right, that would be the starter.
tnx 4 using fixya,
Posted on Oct 04, 2008
Barring any vacuum leaks, P0401 is indicative of a bad EGR valve. Hope this answers your question. Best of luck.
Posted on May 30, 2009
Okay this is a internal problem in the transmission you will need to remove side cover and oil pan of the transmission.This is a big job to do it safely you will need a hoist and engine cradel this a profesional job my advice to you unless you have done this before 2 or 3 times take it in for service this is a delicate job mistakes can resault in costly mancanical further repairs.Hope this helps,John
Posted on Dec 27, 2009
Testimonial: "seems like it should not be as hard as you say "
P0171 System Too Lean Bank 1
P0172 System Too Rich Bank 1
P0173 Fuel Trim Bank 2
P0174 System Too Lean Bank 2
OK, that's a partial list of codes, the fuel delivery is controlled by the oxygen sensors, so it's possible that something in that area could be causing your problem.
However, it could also be clogged fuel injectors that can't deliver enough fuel to the cylinders compared to the air that is pulled into the engine.
Try some fuel injector cleaner for that poured into the gas tank.
How does it run?
Does it miss at all?
Posted on Oct 08, 2010
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