Question about 2007 Chevrolet Impala
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Posted on Jan 02, 2017
SOURCE: check engine
es un carro viejo,tienes que cheguar o cambiar el aciete , si no lo as cambiado ache mucho , chequea los vacums ,o trata el botton que esta cerca del millaje ,primero prende el auto con el botton undido,lugo apgalosin soltar el botton mirra si se apaga la luz trata dos o tres vezez
Posted on Dec 18, 2008
P0442 refers to a small leak in the Evaporative Emissions System(It purges fuel tank vapors into the engine to be burned rather than vented into the atmosphere). From time to time the PCM pressurizes this system to check its integrity. If it senses a small leak, then it sets this code.
Is your gas cap on tight? Recheck it.
The evaporative emission system is probed by applying vacuum to the EVAP system and monitoring for a vacuum decay.
The engine control module (ECM) monitors the vacuum level through the fuel tank pressure sensor signal.
The EVAP canister purge valve and the EVAP vent solenoid are turned on at the nick of time, allowing the engine to **** up a small vacuum on the entire EVAP system.
After the requisite vacuum level has been obtained, the EVAP canister purge valve is switched OFF, locking the system entirely.
If sufficient vacuum level cannot be derived, a large leak is indicated. This can be caused by the following conditions
The P1684 code simply means that the battery has been disconneted within the last 50 starts.
Your Car has a Lot of Problems, but some not at all expensive to fix
Posted on Apr 24, 2009
Sugiero revisar sistema de envio de combustible, presion de bomba, asi como componentes que mantienen el minimo (ralenti) del vehiculo. Descartado eso, verfificar sensores IAC y oxigeno.
Posted on Oct 19, 2009
Pareciera que los inyectores no se estan diparando, ya sea por falta de corriente, o por falta de la orden de la computadora, que sincroniza la abertura momentanea de cada inyector. Haz que alguien intente prender el motor, mientras tu pones el oido cerca de un inyector, o le pones el dedo encima. Deberias sentir una rapida secuencia de clicks. Algo mucho mas complicado es sacar un inyector, sin desconectarlo, y ver si dispara el chorro de gasolina cuando intentas encender el motor.
Posted on Jun 21, 2010
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