Question about 2002 Mercury Sable
P1000 is not exactly a trouble code, but rather a fact code that means the system has not been run long enough to get into a full test mode.
There could be a problem with the computer, or something that is keeping the system from going into closed loop where the computer uses all data from the sensors to control the engine.
For example, if the thermostat does not let the engine reach normal operating temp, or the car is driven on short trips, the system may not go into closed loop.
Posted on Apr 20, 2013
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Posted on Jan 02, 2017
SOURCE: rough idle
Have you had the throttle valve cleaned?
Here is the most common cause of surges and stalls, it is the idle speed control air-bypass valve and throttle valve, they get full of gunk over the miles and cause idle issues (stalls) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.
Posted on Nov 12, 2008
I had a similar problem. I found the filter cartridge below the pcv valve had carboned up, and after the crank case pressurized, oil was forced out the pcv supply line to the throttle body. The idle air control valve solenoid got oil in it and caused my problem, but only when it was cold. The pcv cartridge is accessed by removing the pcv valve and the rubber fitting that the pcv valve mounts in. It can then be fished out with a pick set, and it is a pain because you can't see it, but you can get you hand back there. I hope this helps you.
Posted on Feb 28, 2009
They both refer to oxygen sensors, but a lot of times a dirty mass airflow sensor is the cause. Get a can of Tuner cleaner spray from electronics store, or radio shack & remove battery cable (Neg - ), then remove MAF sensor and clean it well with the spray & let it sit & dry out for 1/2hr or so, then re-install & try it. Careful with the wires, they break easy. I don't recommend carb or brake cleaner be used, because they leave residue, which kinds of defeats the purpose of cleaning it.
Posted on May 31, 2009
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