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P3639 Engine Trouble Code

Meaning of P3639 engine trouble code is a kind of powertrain trouble code and theoretically you can drive for a few weeks or even months with a broken MAF sensor. You will notice a decrease in gas mileage and over time the car will eventually start stalling a lot. At a shop, the replacement cost is between $240-$400 depending on the car, but that's usually the cost of parts because the labor is relatively simple.

P3639 Fault Symptoms :

  1. Check engine light comes on
  2. Engine stalling or misfiring
  3. Engine performance issues
  4. Car not starting
If one of these reasons for P3639 code is occuring now you should check P3639 repair processes.
Now don't ask yourself; What should you do with P3639 code ?
The solution is here :

P3639 Possible Solution:

P3639 Engine

Disconnected, dirty or fouled spark plugs are common causes for engines that won't start. Spark plugs typically need to be replaced every season or 25 hours of use. You should also check that the spark plug gap is set properly. If your spark plugs look good, problems with your ignition system can also preventing a spark. These can range from a faulty spark plug lead, shorted kill switch or flywheel key damage.

P3639 Code Meaning :

P 3 6 3 9
OBD-II Diagnostic Powertrain (P) Trouble Code For Engine Ignition System Or Misfire Fuel Temperature Sensor B Circuit Range/Performance Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector) Reverse Input Circuit

The poor running symptoms are consistent with a MAP sensor malfunction. In addition, in some cases, a bad MAP sensor will not throw a code. Again, the ELD code likely represents a separate wiring issue.

P3639 OBD-II Diagnostic Powertrain (P) Trouble Code Description

P3639 engine trouble code is about Reverse Input Circuit.

Main reason For P3639 Code

The reason of P3639 OBD-II Engine Trouble Code is Fuel Temperature Sensor B Circuit Range/Performance.

Parts or components should not be replaced with reference to only a P3639 DTC. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing.