Question about 1991 Ford Probe

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How to hook up a charcoal filter

I have a 1991 ford probe its in good condition but it will not pass immisions without the evap system working properly. can anyone help or know anything about this at all it would be a life saver.

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Hi,

On the charcoal filter:
To my knowledge some Ford models have a charcoal canister installed in the driver's kick panel. This is connected with a hose to the vacuum intake. The purpose is to draw cabin air and filter through a charcoal sieve and thus maintain clean air in the driver and passenger area.

Alternately, you can also install electronic air ionizers to help reduce unpleasant cabin odor. Another is to install/replace the filter element in the evaporator under the dash.

As to emissions:
This leaves me wondering. To my understanding, emissions are related to engine exhaust and has nothing to do with the condition of the air inside the driver/passenger area. Should this be the case, a possible temporary workaround is to fill up your fuel tank with a higher octane fuel and add some carb/injector cleaner. Thereafter drive aggressively on a long stretch. The idea is to burn off carbon deposits in the combustion chamber, the exhaust manifold, the catalytic converter and all through till the tail pipe. There is a tendency for the engine to run hotter than it usually does. Of course the correct procedure would be to check/clean/replace defective combustion/emission related components.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards. Thank you for using FixYa.

Posted on Aug 19, 2008

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I'm a 20+ year mechanic, what is we are doing.

Posted on Aug 19, 2008

  • kristopher betzler
    kristopher betzler Aug 19, 2008

    if you go to the parts store you can pick up a chilton's or hayns manual it will show you how t hook it back up.
    please rate thanks


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3 Answers

What does code 440 mean on a 2000 Chevrolet Malibu


P0440 - is a large EVAP leak. The EVAP system stores fuel vapor from the fuel tank and then delivers it into the engine under certain condition. The EVAP system basically consists of a purge solenoid, vent solenoid, charcoal canister, fuel tank and a fuel tank pressure sensor.

There are two common causes for this code. One is the fuel cap, make sure it is tight. Also check the filler knock where the gas caps seals to see if there is an excessive amount of rust build up which can also cause this code.

The other is the vent solenoid. If it sticks open the system will not be able to go into a vacuum mode. The vent solenoid is usually tucked up in the quarter panel on the drivers side right behind the tire.

A scan can tool is usually needed to monitor data and activate solenoids.

Feb 27, 2015 | 2000 Chevrolet Malibu

1 Answer

Whats code p1441


Hi there:DTC P1441 - EVAP System Flow During Non-Purge




CIRCUIT DESCRIPTION
The evaporative system includes the following components:


The fuel tank.
The EVAP canister vent valve.
The fuel tank pressure sensor.
The fuel pipes and hoses.
The fuel cap.
The EVAP vapor lines.
The EVAP purge lines.
The evaporative emission canister.
The EVAP purge valve.


The Powertrain Control Module (PCM) supplies a ground to energize the valve (purge ON). The EVAP purge valve control is Pulse Width Modulated (PWM) or turned ON and OFF several times a second. The duty cycle (pulse width) is determined by engine operating conditions including load, throttle position, coolant temperature and ambient temperature. The duty cycle is calculated by the PCM and the output is commanded when the appropriate conditions have been met. The system checks for conditions that cause the EVAP system to purge continuously by commanding the EVAP canister vent valve ON and the EVAP purge valve OFF (EVAP canister vent valve CLOSED, EVAP purge PWM 0%). If vacuum level in the fuel tank increases during the test, a continuous purge flow condition is indicated. This can be caused by any of the following conditions:


EVAP purge valve leaking.
EVAP purge and engine vacuum lines switched at the EVAP purge valve.
EVAP purge valve control circuit grounded. If any of these conditions are present, DTC P1441 will set.


CONDITIONS FOR SETTING THE DTC


No Throttle Position (TP) sensor, ODM, IAT sensor, or MAP sensor DTCs set.
The DTC P0442 diagnostic test has passed.
A continuous open purge flow condition is detected during the diagnostic test (fuel tank pressure decreases to less than -11 in. H20).


ACTION TAKEN WHEN THE DTC SETS


The PCM will illuminate the Malfunction Indicator Lamp (MIL) during the first trip in which the diagnostic test has been run and failed.
The PCM will store conditions which were present when the DTC set as Freeze Frame and Fail Records data.


NOTE: Although these diagnostics are considered type A, they act like type B diagnostics under certain conditions. Whenever the EVAP diagnostics report that the system has passed, or if the battery has been disconnected, the diagnostic must fail during two consecutive cold start trips before setting a DTC. The initial failure is not reported to the diagnostic executive or displayed on a scan tool. A passing system always reports to the diagnostic executive immediately.


CONDITIONS FOR CLEARING THE MIL/DTC


The PCM will turn the MIL OFF during the third consecutive trip in which the diagnostic has been run and passed.

The history DTC will clear after 40 consecutive warm-up cycles have occurred without a malfunction.
The DTC can be cleared by using the scan tool Clear Info function or by disconnecting the PCM battery feed.


DIAGNOSTIC AIDS
Check for the following conditions:


Poor connection at the PCM.
Inspect harness connectors for backed out terminals, improper mating, broken locks, improperly formed or damaged terminals, and poor terminal to wire connection.


Damaged harness.
Inspect the wiring harness for damage.


If the harness appears to be OK, connect the J 41413 EVAP pressure/purge diagnostic station to the EVAP service port, pressurize the EVAP system to 10 in. H2O and observe the Fuel Tank Pressure display on the scan tool while moving connectors and wiring harnesses related to the EVAP purge valve. A sudden change in the display will indicate the location of the malfunction.
Incorrect vacuum line routing.
Verify that the source vacuum line routing to the EVAP purge valve is correct and that the EVAP purge and source vacuum lines to the EVAP purge solenoid are not switched.


Malfunctioning or damaged canister.
A malfunctioning canister may intermittently allow charcoal into the EVAP purge solenoid, vacuum switch, and associated lines causing a DTC to be set. Use the following procedure to check for a carbon release condition:


Turn OFF the ignition switch.
Remove the EVAP purge valve.
Lightly tap the EVAP purge valve and (if applicable) the vacuum switch on a clean work area looking for carbon particles exiting either of the vacuum ports.
If no carbon release is evident, reinstall the components and continue with the DTC P1441 table. If carbon is being released from either component, continue with this service procedure.
Remove the charcoal canister from the vehicle.
Ensure that the main cylinder valve is turned off on the J 41413 EVAP purge/pressure diagnostic station.
Disconnect the black hose that connects the nitrogen cylinder to the EVAP purge/pressure diagnostic station at the pressure regulator by unscrewing the knurled nut on the regulator. No tools are required to remove the black hose from the regulator.
Using a section of vacuum line, connect one end over the open threaded fitting of the EVAP purge/pressure diagnostic station pressure regulator.
Connect the remaining end to the EVAP purge valve end of the EVAP purge line at the vehicle and turn on the main nitrogen cylinder valve. Continue to blow any debris from the purge line for 15 seconds.
Return the EVAP Pressure/Purge Diagnostic Station to its original condition by re-installing the black hose that was disconnected in step 7.
Replace the following components:
The EVAP purge valve.
The EVAP canister.
Proceed with the the DTC P1441 diagnostic table.
Reviewing the Fail Records vehicle mileage since the diagnostic test last failed may help determine how often the condition that caused the DTC to set occurs. This may assist in diagnosing the condition.


TEST DESCRIPTION
Number(s) below refer to the step number(s) on the Diagnostic Table.


If an EVAP purge valve electrical malfunction is present, the purge system will not operate correctly. Repairing the electrical malfunction will very likely correct the condition that set DTC P1441.
Checks the Fuel Tank Pressure sensor at ambient pressure
Checks for a stuck open EVAP purge valve.
Verifies that the fuel tank pressure sensor accurately reacts to EVAP system pressure changes.
If the EVAP purge and engine vacuum lines are switched at the EVAP purge solenoid, the solenoid valve will leak vacuum.
The PCM will command the EVAP purge and EVAP canister vent valves closed with the scan tool Seal System EVAP output control function activated. Fuel tank pressure should not decrease under this condition.


Hope this helps.

Jun 25, 2012 | 1999 Buick Century

1 Answer

P1441 evap system flow during nonpurge


CODE P1441 -- EVAP SYSTEM FLOW DURING NON PURGE CONDITIONS. POSSIBLE CAUSES. EVAP PURGE VALVE PIPE OR THE CHARCOAL CANISTER HAS A TEMPORARY BLOCKAGE. FTP SENSOR IS OUT OF CALIBRATION DAMAGED OR IT IS SKEWED. EVAP PURGE SOLENOID VALVE IS DAMAGED OR HAS FAILED. PCM HAS FAILED.

Jul 06, 2011 | 1996 Buick Roadmaster

1 Answer

I got a Error Code P1441 Definition EVAP System Flow During Non-Purge Conditions Possible Causes: EVAP purge valve, purge pipe, or the charcoal canister has a temporary blockage (this fault could...


P1442 usually gas cap. P1449 usually vent solenoid. P1441 usually always a faulty FTP sensor. Very problematic to Malibu, Grand Am Cavaliers and Aleros. That would be my first area to check. They are also known for poor wiring connections at the Left rear passthru connector to the fuel tank and vent solenoid, but not necessarily for that code.

Jan 25, 2011 | 2001 Pontiac Grand Am SE

2 Answers

I have a code P1447 Evap purge flow monitor on my 97 Pathfinder. What is and how do I correct this issue?


P1447 - Evaporative Emission (EVAP) Control System, Purge Flow Monitor
In this evaporative emission (EVAP) control system, purge flow occurs during non-closed throttle conditions. Purge volume is related to air intake volume. Under normal purge conditions (non-closed throttle), the EVAP canister purge volume control solenoid valve is open to admit purge flow. Purge flow exposes the EVAP control system pressure sensor to intake manifold vacuum.

Under normal conditions (non-closed throttle), sensor output voltage indicates if pressure drop and purge flow are adequate. If not, a fault is determined. Malfunction is detected when EVAP control system does not operate properly, EVAP control system has a leak between intake manifold and EVAP control system pressure sensor.

Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)

Possible causes
* EVAP canister purge volume control solenoid valve stuck closed
* EVAP control system pressure sensor and the circuit
* Loose, disconnected or improper connection of rubber tube
* Blocked rubber tube
* Cracked EVAP canister
* EVAP canister purge volume control solenoid valve circuit
* Closed throttle position switch
* Blocked purge port
* Closed throttle position switch


Test is and send us your updated.

Jan 14, 2011 | 1998 Nissan Pathfinder

1 Answer

1991 cadillac sedan deville has excess pressure in gas tank and stalls making right hand turns as soon as fuel gauge shows 9 gals.


SOUND LIKE FUEL PUMP GOING BAD.BUT CHECK THE EVAP CHARCOAL CANISTER FILTER IF GAS SOAKED REPLACE IT REPLACE GAS CAP MAKE SURE GAS CAP IS THE PRESSURE VACUUM TYPE.ALSO CHECK VACUUM PURGE VALVE VACUUM HOSE TO CARBURETOR AND CHECK VACUUM HOSE TO CHARCOAL CANISTER FOR BLOCKAGE RESTRICTION OR BROKEN AND MISSING.

Oct 31, 2010 | 1991 Cadillac DeVille

2 Answers

Engine light -on . did scann with obd 2 scanner.


evap is a valve which draws gases from the petrol tank, through a charcoal canister, ususal problem is air leakes from pipework and i have a had a few evap valves go down. the valve is in the engine bay two wires two pipes.
Good luck Davelee

Mar 23, 2009 | 2004 Ford Escape

3 Answers

PO 496 emissions code - 2004 Pontiace Grand Am


Was the gas cap left loose? if no replace the gas cap anyway and clear the code, then just drive it and make sure it stays out.

Sep 13, 2008 | 2004 Pontiac Grand Am

1 Answer

Please help


Hi...
The Canister on your PROBE is located at Right side of engine compartment In front of firewall beside of the A/C dryer.
The first you need to check is : The FUEL CAP. The FILLER hose of the fuel Tank. for cracked or Pinched at any side.
ALL the hoses of the fuel tank Must be good.
Now go to the Engine side. the Vaccum on the Evap. Selenoid . if there a Vaccum check the selenoid for proper funtionallity. If the Selenoid is OK.
Check the line coming from the Selenoid to the Canister.
The line must be OK. with loos of vaccum.
Check the Line from the canister to the Fuel tank. replace if need. One of the lines goes to the Air cleaner Hose.
But if the Vanister (charcoal) need to be repleced replace with a New ONE.

I hope this help to try solve your problem.

Aug 19, 2008 | 1991 Ford Probe

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