SOURCE: my 1996 grand am ,pontiac fail inspection due to
Here's a site to view what the part looks like, it's about $40. This info is assuming you have the 3.1 V-6, not sure if you have the 4 cyl. There is a charcoal canister that stores gas vapors so they won't be released into the atmosphere. These stored vapors are diverted to be burned by the engine. A defective purge solenoid valve won't allow the vapors to be burned, and the canister will eventually fill with gas. I changed one some time ago, and don't remember too well the procedure, but I believe it's just 1 or 2 bolts mounted on the upper engine area, I think it's on one of the valve covers, and a plug in (electrical). When you purchase the part, the parts store should be able to tell you the exact location. I remember the canister itself is under the coolant recovery tank. If you can see it (I seem to remember it was hidden) you can try to follow connections to the purge solenoid valve. Hope this helps, sorry to be somewhat vague, it's been a while since I changed it!
http://www.autozone.com/autozone/catalog/parts/partsShelf.jsp?displayName=Canister+Purge+Solenoid¤tPage=1&categoryDisplayName=Emission+Control&navValue=16000326&itemId=326-0&parentId=60-0
SOURCE: where is the shift solenoid
There are a few shift solenoids if you are talking about the trany and not the shift , the solenoids are locted inside the trany on the valve body, you would need to drop the pan to get to the valve body and there you will see them . theres a 1-2 shift soleniod and a 2-3 soleniod and you would need to know which one you need , good day. heres a few diagram to show you which is which,
P0440 Evaporative emission (EVAP) system - malfunction
Possible causes: Hose connection(s), intake leak, EVAP canister purge valve
P0441 Evaporative emission (EVAP) system - incorrect flow detected
Possible causes: Hose connection(s), intake leak, EVAP canister purge valve
P0442 Evaporative emission (EVAP) system - small leak detected
Possible causes: Hose connection(s), intake leak, EVAP canister, EVAP canister purge valve
P0443 Evaporative emission (EVAP) canister purge valve - circuit malfunction
Possible causes: Wiring, EVAP canister purge valve, ECM
P0444 Evaporative emission (EVAP) canister purge valve -open circuit
Possible causes: Wiring open circuit, EVAP canister purge valve, ECM
P0445 Evaporative emission (EVAP) canister purge valve -short circuit
Possible causes: Wiring short circuit, EVAP canister purge valve, ECM
P0450 Evaporative emission (EVAP) pressure sensor - circuit malfunction
Possible causes: Wiring, EVAP pressure sensor, ECM
P0455 Evaporative emission (EVAP) system - large leak detected
Possible causes: Hose connection(s), intake leak, EVAP canister, EVAP canister purge valve
P0456 Evaporative emission system - very small leak detected
Possible causes: Mechanical fault, hose connection(s), EVAP pressure "sensor
P0457 Evaporative emission system - leak detected (fuel cap loose/off)
Possible causes: Mechanical fault, hose connection(s), EVAP pressure sensor
P0458 Evaporative emission system, purge control valve -circuit low
Possible causes: Wiring short to earth, EVAP valve
P0459 Evaporative emission system, purge control valve -circuit high
Possible causes: Wiring short to positive, EVAP valve
Evaporative Emission Purge Solenoid
Description & Operation
The duty cycle EVAP canister purge solenoid (DCP) regulates the rate of vapor flow from the EVAP canister to the intake manifold. The Powertrain Control Module (PCM) operates the solenoid.
During the cold start warm-up period and the hot start time delay, the PCM does not energize the solenoid. When de-energized, no vapors are purged. The PCM de-energizes the solenoid during open loop operation.
The engine enters closed loop operation after it reaches a specified temperature and the time delay ends. During closed loop operation, the PCM cycles (energizes and de-energizes) the solenoid 5 or 10 times per second, depending upon operating conditions. The PCM varies the vapor flow rate by changing solenoid pulse width. Pulse width is the amount of time that the solenoid is energized. The PCM adjusts solenoid pulse width based on engine operating condition.
Removal & Installation
The duty cycle evaporative (EVAP) canister purge solenoid is located in the engine compartment near the brake master cylinder.
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