Question about 2002 Pontiac Grand Prix

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Check engine light came on, so I went to the auto store to have it checked out. He said it was an emissions problem that could be a vacuum line, or an exhaust problem but not the caty. conv. the code was P0440. Thanks, Joe

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The most likely reason is going to be the gas cap, either it is loose or has a damaged seal-0ther possibilities could be the vent or purge solenoid, evaporator canister, or fuel pressure sensor. From my experience, 9 out of 10 causes for this is the cap, followed by the vapor canister (due to constantly overfilling the tank when getting gas).

Posted on May 25, 2011

Testimonial: "Awsome! It took about 50-60 miles, but the "Check engine" light is out!! Thanks a bunch! Joe,"

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2 Answers

On my 02 elantra once the engine is warmed up it will not rev up when i push the gas what can cause this


It sounds like your engine is going into the 'limp home' mode, indicating there is a significant emissions equipment malfunction. Is the 'check engine' light on? You can take the car to a decent Auto Parts Store (O'reilly, Autozone,etc) and they will scan for the error code and reset the 'light' and get the car out of 'limp home' if the fault was intermittent. If the light comes back on, the malfunction has to be repaired. Literally dozens of minor malfunctions will cause this. The Federal Emissions Standard laws REQUIRE the 'limp home' mode when the malfunction will cause a significant increase in emissions. The problem could be a loose gas cap or loose vacuum line etc. MAJOR component failures are rare.

Jul 23, 2014 | Hyundai Motor 2002 Elantra

1 Answer

Check engine


check light means your vechicle computer has detect problem in engine control system you could have bad sensor,cylinder misfire or evap leak like missing gas cap or loose gas cap or fault in the emission control take vechicle to any auto parts stores like pep boys , auto zone, advance auto parts or auto parts stores in your home town. they will code scan vechicle for free and see what causing check engine light to flash on.

Dec 06, 2011 | 2000 Toyota Land Cruiser

1 Answer

1996 Ford Aerostar 3.0 L V-6 Constant check engine light ON Ran codes. Code says vacuum leak on fuel canister. I'd like to change all the vacuum lines. Don't have a good schematic. Haynes manual only...


what codes?

The vacuum lines run from the canister to the intake manifold. One is the purge hose to deliver stored fuel vapor to the intake to be burnd when engine is warm and you are crusing at part throttle. The other line is the vacuum line to operate it.

Fuel Vapor Valve, Aerostar (4.0L Engine) The evaporative emission valve (9B593) uses a small orifice, 1.83mm (0.072 inch), that allows vapors to pass into the vapor line running forward to the evaporative emissions canister (EVAP canister) (9D653). This evaporative emission valve mounts directly into the fuel tank (9002) using a fuel vapor separator seal. Fuel vapors trapped in the sealed fuel tank are vented through the orificed evaporative emission valve. The vapors from the fuel tank leave the evaporative emission valve through a single vapor line and continue to the evaporative emissions canister in the engine compartment for storage.
-----------------------------------------------------
Fuel Vapor Canister Purge Regulator Valve, Aerostar, Ranger Removal and Installation
  1. Disconnect wire harness from evaporative emission canister purge valve (EVAP canister purge valve) (9C915).
  1. Disconnect wire harness from thermistor.
  1. Disconnect evaporative emission canister purge valve assembly from fuel vapor canister and throttle body.
  1. To install, reverse removal procedure.
-----------------------------------------------------------------

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Mar 25, 2011 | Ford Aerostar Cars & Trucks

1 Answer

Failed smog check


How well does the vehicle run?

Assuming that the engine did pass the EGR function test on the emission test results, and the MIL (Malfunction Indicator Light) or check engine light is not on when the engine is running, and if you are not sure when the last time it was that the engine had a complete tune-up, with distributor cap, ignition rotor, spark plugs, spark plug wires, air and fuel filters, then a complete tune-up would certainly help, and if the engine oil and oil filter have not been changed in a while, then they should also be changed before an emission test because long used engine oil traps carbon and it will show up as higher CO on the emission test because the emission analyzer will be able detect the higher CO from the engine oil through the PCV valve.

However, it would seem from those HC readings that there is a vacuum leak, and carefully inspect all of the vacuum lines for any cracks or damage, (especially the vacuum line to the fuel pressure regulator) because cracks in the vacuum lines seem to like to hide underneath the lines.

The emission label under the hood should have the vacuum line routing diagram printed on it, and the vacuum lines should all be checked to be certain that they are all connected correctly.

Here is the firing order diagram for that vehicle to help assist you tune-up the vehicle.


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Jul 09, 2010 | 1997 Honda Civic

1 Answer

My name Tommy V, I have a 2001 Toyota Echo, the CK engine light was on, went to a car parts store used their code reader, code was PO441 Evaporative emission control -System incorrect, purge flow. I used...


The EVAP cannister is part of the emissions system. Excess exhaust runs thru it-purge flow is when it is released. Check all the vacuum lines going to it. I don't you will find a parts listing for a purge flow valve or vent or solenoid. Your light will probably come on again shortly.

Mar 15, 2010 | 2001 Toyota Echo

2 Answers

Engine light codes p0440,p0442-found a fuel leak on left top side of engine,has a vacuum hose hooked to it is this the fuel pressure regualator?


P0442 Evaporative Emission Control System Leak Detected (small leak)
P0440 Evaporative Emission Control System Malfunction

Jan 30, 2010 | 2000 Pontiac Grand Am GT

3 Answers

2006 Kia Sedona's check engine light


try not to fill up the tank while the car is running. maybe there is a bad seal on the gas cap now. i would simply reccomend taking it to the nearest advanced auto part, autozone, jiffy lube...anything of that matter and get them to read the code for you[they should do it for free]. Make sure to write it down, come back here and let me know what it said. its probably not a big deal

Aug 28, 2009 | 2006 Kia Sedona

2 Answers

Engine light came on vehicle working fine


A check engine light is a signal from the computer that one of the systems it is monitoring is not functioning correctly. This could be as simple as a loose gas cap (or a cap that needs replaced) or the cannister vent solenoid not working or a leak in the vacuum lines to the vent solenoid(all part of the emissions) to a cam or crank sensor failing. The only way to know why the computer is reporting a problem is to read the codes stored in the onboard computer. The codes will identify the system that is not functioning correctly.
The car may run fine but there is some system not doing its job or a sensor not sending the correct info.

Jul 05, 2009 | 2006 Dodge Stratus

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