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Had a code come up as a bad Map sensor, replaced that, but code is still coming up. The truck at stoplights or first or second gear is chugging and flashes "Reduced Power" across the dash. It also stalls out some times. A few years back I had a nozzle on the fuel pump that was leaking and had that repaired by putting a new gas line and clamp on it. Could this have anything to do with the problem?
Re: Had a code come up as a bad Map sensor, replaced...
Have you erased the error code in the CPU of your car? also sometime it can be the the control valve in the injector. I would get the car diagnosticsdone properly and than see how it goes.
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Have the fault codes read again and get the code numbers so that we can identify if possible the causes for your problem. IN most codes recorded there are a list of possible causes for example if he said possible crank position sensor=== there is also the cam position sensor --wiring --ECM--HO2S sensor --MAF/MAP/VAF sensors that come into the equation
code po105 refers to manifold absolute pressure(MAP)sensor/barometric pressure (BHARO) sensor -circuit malfunction==causes--wiring MAP sensor--BARO sensor--ECM code p0171 refers to system to lean bank 1===causes intake/exhaust leak---AIR system MAF/MAP sensor fuel pressure /pump /injectors--HO2SW code p0325 refers to knock sensor(KS) 1 bank 1-circuit malfunction====causes--wiring ---poor connections---KS Check the exhaust flexible pipe at the manifold for cracks have a fuel pressure test done on the fuel manifold to determine either pump/ filter or pressure regulator. replace HO2S unit
I usually want to check sensor wiring circuits before replacing anything. As you can see, the map sensor shares ref voltage and ground with others. Orange wire with black tracer is signal return. The gray wire should be ref voltage 5 volts. The signal wire should be lite green. Vacuum for the map sensor is also important. What was actual trouble code was it two digit code or five?
Hello, you have a vacuum leak in the closed loop section of your emission's system or theO2 sensor is bad.
First check the EGR valve for sticking and loose or broken hoses. Let me know what you find. Good luck.
A code 34 calls attention to the MAF sensor, not a MAP sensor. Try changing that out, first. You might also be having problems with your ignition control module.
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