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Blowing black smoke and hesatation on accelration replaced lower and up in take gaskets maf and iac and crak postion sensor changed all the plugs it is not showing any codes now but blowing black smoke and hesatation on accelration help
Re: Blowing black smoke and hesatation on accelration...
NEW CRANKSHAFT POSITION SENSOR HAS TO BE REPROGRAMM.PROBLEM IS THE CRANKSHAFT SENSOR COULD HAVE INTAKE GASKET LEAK OR FUEL INJECTOR SEALS LEAKS WILL CAUSE ENGINE ROUGH IDLE SMOKE BLACK.
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High idle is most often caused by an engine vacuum leak, use a can of carburetor spray and spray it around the intake manifolds (upper and lower), if there is a leak you will hear a change in the idle speed
High idle could also be of air going in past the MAF mass air flow, just like a vacume leak. Tap the IAC idle air control valve and see if any changes? I normally like to spray water all around the engine specially the vacume pipes and the intake to find leaks (that was old school) now we have smoke machine which is accurate and detects a very small crack.
Diagnostic Test Code (DTC) P0101 has a generic description of "Mass or volume air flow circuit range/performance problem". This can be caused by several things including:
> Dirty air filter > Air leak in air intake system > Contaminated, deterriorated or damaged Mass Air Flow Sensor > Poor electrical connections at the Engine Control Module, the Mass Air Flow (MAF) sensor or the Throttle Position Sensor (TPS) > Faulty MAF or TPS
You should check your air filter and air intake system visually and correct any obvious defects/leaks first.
If a visual inspection does not turn up the cause, then you will need a scan tool capable of reading sensor data to verify the function of the MAF and TPS. You will also need proper electrical diagnostic equipment to verify the integrity of the circuits and continue with diagnosis.
PO506 --- Idle Air Control System RPM lower then expected
Clean Throttle Plate
Check for any air/vacuum leaks --
Ducting from air filter to throttle,loose or a vacuum leak
Throttle Body Leaking
MAF Sensor
IAC Valve gasket
Egr Gasket
PCV Seal
Hopefully you have installed new spark plugs since 2005
Also replaced the front (2) O2 Sensors at 100,000 miles
Cleaned MAF Sensor once or twice a year
dont take soo much in consideration after you have make all this things, some time is on only for any wire faulty, or a shrt electrical arc in any place in wire system. ask auto tap mechsnics for this maybe they have similar case before.
If you facing a little black smoke along with it your engine is
running a little rich. Black smoke indicates unburned fuel and this
could cause a black stain and leading to test failure
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