Question about Cars & Trucks
I had these codes thrown on my 2007 chevy colorado (RWD). I just got done replacing the clutch yesterday. Can you help me understand what is causeing these codes to be thrown
Posted by Anonymous on
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Posted on Jan 02, 2017
CODE PO449 -EVAP VENT SYSTEM PERFORMANCE CONDITION.POSSIBLE CAUSES. VENT SOLENOID CONTROL CIRCUIT IS OPEN OR SHORTED TO GROUND OR.VENT SOLENOID CONTROL CIRCUIT IS SHORTED TO SYSTEM POWER B+.OR VENT SOLENOID POWER CIRCUIT IS OPEN TEST THE ENG 1 FUSE.OR VENT SOLENOID IS DAMAGE OR HAS FAILED.OR PCM HAS FAILED.
Posted on Aug 19, 2009
Clean all the electrical connections you can get to under the hood with automotive electronics cleaner,dry with compressed air and pack each connector with di-electric grease.
Posted on Nov 13, 2009
both codes refer to the throttle position sensor, the sensor is at the throttle plate, on the side of the throttle body. to test remove the connector to sensor, use a ohms meter to test. put 1 lead to top connection and the other to the bottom one. move throttle and the needles on the ohms meter should move very even, move throttle slow to get a good reading, needle should move without no hesitation, if the test is bad replace tps sensor. if the sensor gets to bad, it can have an effect on transmission shifting. after fixing sensor have the light turned of with an obd2 scanner.
Posted on Feb 20, 2010
This is not hard but tricky because the trim plate around the radio has clips that hold the trim plate very tight.Use a plastic type flat tool or flat screw driver wraped with tape or a shop rag to avoid damage to the plastic trim and pry the trim panel around the radio loose. remove all elec connectors.Then remove the screws that hold the radio in place and remove all elec connectors.
Posted on Feb 22, 2010
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