2009 chevy express 2500 code p0171
#1
2009 chevy express 2500 part
Hello I have a 2009 chevy express 2500 wit this vacum leak idk what is the name of this part or how to remove it please help
Sucks in air when i turn on vehicle
Sucks in air when i turn on vehicle
#2
CF Veteran
That’s a vacuum supply port for the HVAC actuators.
If it comes off at all, it’ll be by twisting it to the left and pulling; however I think they’re glued in place. Heating it may help loosen the glue for removal but you’ll still need a replacement fitting.
Other options (besides manifold replacement) would be to attempt repairing the port or plugging it off and relocating the vacuum hose to another port.
If it comes off at all, it’ll be by twisting it to the left and pulling; however I think they’re glued in place. Heating it may help loosen the glue for removal but you’ll still need a replacement fitting.
Other options (besides manifold replacement) would be to attempt repairing the port or plugging it off and relocating the vacuum hose to another port.
#3
That’s a vacuum supply port for the HVAC actuators.
If it comes off at all, it’ll be by twisting it to the left and pulling; however I think they’re glued in place. Heating it may help loosen the glue for removal but you’ll still need a replacement fitting.
Other options (besides manifold replacement) would be to attempt repairing the port or plugging it off and relocating the vacuum hose to another port.
If it comes off at all, it’ll be by twisting it to the left and pulling; however I think they’re glued in place. Heating it may help loosen the glue for removal but you’ll still need a replacement fitting.
Other options (besides manifold replacement) would be to attempt repairing the port or plugging it off and relocating the vacuum hose to another port.
Connects to the vacuum reservoir also fix my air ac was blowing low
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Rednucleus (December 10th, 2023)
#5
I got back the codes p0171 and p0174 change all 4 o2 sensors as well didn't fix it do you think it can be the fuel pressure regulator my van turn off going uphill turn on code p0121 but then it went away
#6
CF Veteran
Low fuel pressure is another possible cause. Spec is 50-60 PSI at the rail - should hold for at least a few minutes at KOEO and maintain it KOER at idle. The regulator is part of the fuel pump assembly in the tank.
P0121 - clean the throttle body bore, if necessary. Carbon accumulation around the throttle plate can cause it to stick/drag/bind and intermittent stalling and/or idle concerns can result.
If the TB is clean, monitor the TPS signal KOEO and slowly press the accelerator pedal all the way to the floor and slowly release. Watch for sudden changes in the signal that aren’t the result of your movements. Any sudden changes indicate the throttle body requires replacement.
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Idkchevy1234 (December 13th, 2023)
#7
2009 chevy express 2500 code p0171
Hello I need help wit this obd reading
so far I change mass flow air sensor o2 sensors all 4 and spark plugs
Should I change evap sensor ?
so far I change mass flow air sensor o2 sensors all 4 and spark plugs
Should I change evap sensor ?