GM techs in the house?
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From: Mentor, OH
GM techs in the house?
I know a few of you are out there, but despite my best (re: lazy) efforts, I couldn't track down a screen name. I have a random ass question about my buddy's old Grand Prix. If any of you would be so kind as to help, please post up here or shoot me a PM.
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From: WV
is there and car shows down your way bfaulk
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From: WV
Well we both know these cars belong to our ladies, so technically unless your DD is less cool than my shitbox 97 chevy 1/2 ton, i'd say you got me beat, lol... Heck no for car shows, i live in bumfucked, i went all the way to york pa last weekend for a decent show. You live in a better area, i was gonna ask you the same thing...
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From: Calgary, Alberta
not yet. but i'm switching over to the mistubishi dealership here in town because the dealer i'm at is shutting down so (pontiac dealer) and there is no room at the the north location of the dealer that i orignally came from.
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Joined: 06-01-09
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From: Mentor, OH
Alright my buddy has a 95 (pretty sure it's a 95) Grand Prix, threw CEL code P1441, "Manufacturer control aux. emissions control."
a) What the hell does this mean?
b) What needs to be done to fix it?
The car isn't running any differently and the light hasn't come on since I reset it, so I'm assuming it's a censor at worst. Any help is appreciated.
a) What the hell does this mean?
b) What needs to be done to fix it?
The car isn't running any differently and the light hasn't come on since I reset it, so I'm assuming it's a censor at worst. Any help is appreciated.
code 1441
Helpfull schematic
Most of the time the problem is the canistor purge valve
Schematic Reference: Evaporative Emissions (EVAP) Hose Routing Diagram
1
Did you perform the Diagnostic System Check-Engine Controls?
--
Go to Step 2 (yes)
Go to Diagnostic System Check - Engine Controls (no)
2
Are DTCs P0443, P0449, P0452, or P0453 also set?
--
Go to Diagnostic Trouble Code (DTC) List (yes)
Go to Step 3 (no)
3
Remove the fuel fill cap.
Turn ON the ignition, with the engine OFF.
With a scan tool, monitor the FTP.
Does the scan tool indicate FTP within the specified range?
-0.5 to +0.5 in H2O
Go to Step 4 (yes)
Go to DTC P0453 (no)
4
Disconnect the EVAP purge pipe from the EVAP canister purge valve.
Install a hand held vacuum gage to the EVAP purge port.
Disconnect the EVAP canister purge valve harness connector.
Monitor vacuum on the vacuum gage.
Start the engine and allow the engine to idle.
Increase the idle to 1,200-1,500 RPM.
Does the gage indicate an increase in vacuum?
--
Go to Step 5 (yes)
Go to Diagnostic Aids(no)
5
Replace the EVAP canister purge valve. Refer to Evaporative Emission (EVAP) Canister Purge Valve Replacement .
Did you complete the replacement?(yes)
--
Go to Step 6
--
6
With a scan tool, capture and record the fail record data and clear the DTCs.
Perform the Service Bay Test. Refer to Service Bay Test .
Does the scan tool indicate that the service bay test passed?
--
Go to Step 7 (yes)
Go to Step 3 (no)
7
With a scan tool, observe the stored information, Capture Info.
Does the scan tool display any DTCs that you have not diagnosed?
--
Go to Diagnostic Trouble Code (DTC) List (yes)
System OK(no)
Helpfull schematic
Most of the time the problem is the canistor purge valve
Schematic Reference: Evaporative Emissions (EVAP) Hose Routing Diagram
1
Did you perform the Diagnostic System Check-Engine Controls?
--
Go to Step 2 (yes)
Go to Diagnostic System Check - Engine Controls (no)
2
Are DTCs P0443, P0449, P0452, or P0453 also set?
--
Go to Diagnostic Trouble Code (DTC) List (yes)
Go to Step 3 (no)
3
Remove the fuel fill cap.
Turn ON the ignition, with the engine OFF.
With a scan tool, monitor the FTP.
Does the scan tool indicate FTP within the specified range?
-0.5 to +0.5 in H2O
Go to Step 4 (yes)
Go to DTC P0453 (no)
4
Disconnect the EVAP purge pipe from the EVAP canister purge valve.
Install a hand held vacuum gage to the EVAP purge port.
Disconnect the EVAP canister purge valve harness connector.
Monitor vacuum on the vacuum gage.
Start the engine and allow the engine to idle.
Increase the idle to 1,200-1,500 RPM.
Does the gage indicate an increase in vacuum?
--
Go to Step 5 (yes)
Go to Diagnostic Aids(no)
5
Replace the EVAP canister purge valve. Refer to Evaporative Emission (EVAP) Canister Purge Valve Replacement .
Did you complete the replacement?(yes)
--
Go to Step 6
--
6
With a scan tool, capture and record the fail record data and clear the DTCs.
Perform the Service Bay Test. Refer to Service Bay Test .
Does the scan tool indicate that the service bay test passed?
--
Go to Step 7 (yes)
Go to Step 3 (no)
7
With a scan tool, observe the stored information, Capture Info.
Does the scan tool display any DTCs that you have not diagnosed?
--
Go to Diagnostic Trouble Code (DTC) List (yes)
System OK(no)
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