Question about 1997 Oldsmobile 88

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Check engine light

Iwent to autozone so they can with the machine and they told me that it was a small evaporation leak so ibought a new gas cap how long does the cheack engine light stay on if that is the real problem i have a 97 oldmobile cutless

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The genuises at autozone should have reset the light when they were checking the codes. that light will stay on until it is reset even if you have fixed the problem.

Posted on Nov 13, 2008

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The light must be reset, if the problem isn't repaired then the problem will cause the light to come back on in 2 r 3 days

Posted on Nov 13, 2008

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Location for 2006 buick rainier EVAP purge solenoid


You should have an EVAP leak test done . It could be a leaking purge valve , you could need a new gas cap as well or it could be the fuel filler neck . or assorted hoses or the fuel tank pressure sensor . If the check engine light is lit there will be a code .
DTC P0442: Evaporative Emissions (EVAP) System Small Leak Detected or
DTC P0455: Evaporative Emission (EVAP) System Large Leak
DTC P0446: Evaporative Emissions (EVAP) Vent System Performance
You have to jack up the vehicle , the purge valve is attached to the engine behind the A/C compressor .

Dec 01, 2015 | 2006 Buick Rainier

1 Answer

P0442


Hello, This is a Code for an Evaporator Emissions leak. The Code is for a small leak so you may just need to tighten or replace the gas cap. Autozone, Advance, and Oreillys will scan for free and you may need to erase the Code from the computer after trying the gas cap.

This code is an indication of a small leak. If the gas cap is not the cause, you will need to go to a repair place having a "smoke machine". This specialized machine is the only way to detect a small leak in the system.

Thanks for using Fixya.

Jun 06, 2011 | Ford Crown Victoria Cars & Trucks

4 Answers

Hi I have a Dodge Neon 2003 with engine codes P0456 and P0440. What do these mean and how do I fix them


P0456....Evaporative Emission Control System Leak Detected (very small leak)


P0440....Evaporative Emission Control System

Nov 12, 2010 | Dodge Neon Cars & Trucks

2 Answers

My check engine light came on and the automotive people checked with their machine and the machine stated small evapore emissions leak and determined it was becasue of my fuel cap. I bought a new one yet...


Although a fuel cap can cause this error, any leaks in the gas tank including the return line to the evaporative canister, or the connections above and below the filler neck, can cause the problem you describe.

It was a good guess that the gas tank cap caused this problem, but now that you have replaced it, should look for leaks elsewhere down the line.

Aug 13, 2010 | 2002 Chrysler Voyager

2 Answers

My check engine light came on. The dealership said "filler neck leaking causing evaporative leak." The gas cap also says "loose cap will turn on check engine light." Would like to try a new gas cap but...


sad to say sir that how to clear the code is not easy in manual clearing, you need diagnostic tool to clear the dtc, but some dtc will cleared by 20-50 consecutive warm up if no other trouble code detected by the computer

Jun 19, 2010 | 2001 Chrysler Town & Country

3 Answers

The check engine light keeps coming on -we were told it was because gas cap was loose-but she filled up & tightened the cap-but still on


First, you need to go to a local parts store and find out what the code means. If it shows a small leak, the gas cap probably needs replaced. Gas caps need replaced more often now that computers register fuel emissions.

Jul 01, 2009 | 2006 Suzuki Grand Vitara

2 Answers

I have a 2003 dodge ram 1500 with a V-8 4.7 engine and my check engine light came on with a P0456 code and I have been told that it could be the gas cap, I have checked it and it seems fine but should I...


The leak in your evap system is very small at .020. It is more than likely a small split in a hose somewhere. The cap is probably ok, we rarely find a bad one. If it is a small split in a hose it will only get larger over time. Here is the factory info on the code. We have found that alot of these leaks are from a small hose on the evap canister under the vehicle, but with out looking at your vehicle it is hard to say. If the leak goes away or is no longer large enough to be detected, your light will go out after a few days. These leaks are emmissions related and will not effect the integrity of the vehicle. I would have it checked and corrected if the light stays on at your convienience.

Symptom List:
P0442-EVAP LEAK MONITOR MEDIUM (0.040) LEAK DETECTED
P0455-EVAP LEAK MONITOR LARGE LEAK DETECTED
P0456-EVAP LEAK MONITOR SMALL (.020) LEAK DETECTED
Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be P0442-EVAP LEAK MONITOR
MEDIUM (0.040) LEAK DETECTED.
When Monitored and Set Condition:
P0442-EVAP LEAK MONITOR MEDIUM (0.040) LEAK DETECTED
When Monitored: Immediately after a cold start, with battery/ambient temperature
between 40° F and 90° F and coolant temperature within 10° F of battery/ambient.
Set Condition: If there is a leak larger than 0.0409 and smaller than 0.0809 in the
evaporative system.
P0455-EVAP LEAK MONITOR LARGE LEAK DETECTED
When Monitored: Immediately after a cold start, with battery/ambient temperature
between 40° F and 90° F and coolant temperature within 10° F of battery/ambient.
Set Condition: There is a leak larger than 0.0809 in the evaporative system.
P0456-EVAP LEAK MONITOR SMALL (.020) LEAK DETECTED
When Monitored: Immediately after a cold start, with battery/ambient temperature
between 40° F and 90° F and coolant temperature within 10° F of battery/ambient.
Set Condition: There is a leak larger than 0.0209 and smaller than 0.0409 in the
evaporative system.
POSSIBLE CAUSES
LEAK AT GAS CAP
VEHICLE HISTORY AND SERVICE BULLETIN INVESTIGATION
VISUAL AND PHYSICAL INSPECTION
VERIFY EVAPORATIVE EMISSION SYSTEM LEAK
EVAP PURGE SOLENOID OPERATION
INTERMITTENT LDP MONITOR FAILURE
EVAPORATIVE EMISSION LEAK DETECTION
GAS CAP
LDP COMPONENT LEAK

Jun 12, 2009 | 2003 Dodge Ram Maxi

2 Answers

Check engine light


you were told your vehicle has small/large evap leak detected? The leak could be coming from any number of components. Fuel tank seal, evap purge valve, check valve. The best way is to find the leak with a smoke machine. It is designed to find leaks in the evap system. There is a port with a green cap in the engine compartment. This is where the hose from the machine attaches to. Turn machine on. Where ever you see smoke, this is where the leak is.

May 20, 2009 | 2002 Chrysler Concorde

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