Question about 2007 Chevrolet Impala LS Sedan New Cars

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In the past year my engine light keeps on coming on. I have new gas cap. I recently had the throttle system worked on, and again last evening the engine light appeared. 2007 impala???

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There are hundereds of reasons for the light to illuminate, are you having any drivability issues? Have you had the light checked and if so what are the codes?

Posted on Mar 17, 2011

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My emissions light is on when I first started kinda shaky last night I noticed little smoke under hood would it be OK to drive an please someone tell me what this could he


The emission light comes on when the computer detects a leak or malfunctioning part in the system. It can come on due to a loose gas cap to a disconnected hose. There a lot of things that make this light come on. IS the check engine light on/flashing? If so, you may have a misfire causing the shake. If the engine light is on, have the codes scanned to isolate the problem.

Oct 25, 2015 | 2005 Ford Freestar

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Gas cap light keeps coming on. I have tried to get it working again but no luck.


Was that also buying a NEW GAS CAP? the gas system work on a PURGE valve system, some times the problem is the purge valve located on top of the engine. I would try the Gas cap first before the $30.01 Purge valve. follow the light indicator.

Jun 03, 2015 | Cars & Trucks

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How can I fix the check engine light on my dodge ram, last year it had to do with the gas cap, could it be again?


Had nothing to do with any door,
last year & now it may be a different
problem

The gas cap was either good or not

What codes do you have?
How do you know what system set the MIL Lamp?

Sep 27, 2014 | Dodge Ram 1500 Cars & Trucks

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My check engine and check fuel cap light keep coming on after i changed the gas cap twice and reset the light it came back on what could this be. I drive a 06 lincoln navigator


You need to diagnose any codes you get
& smoke test the evap system, to find a
problem

Seldom does throwing on parts with a name similar
to a code work

Codes have nothing to do with installing parts

Clearing codes, clears all data needed to diagnose
the failed system & the evap system only runs every few
days,so you done as far as codes helping

Mar 22, 2014 | 2006 Lincoln Navigator

1 Answer

Why does service engine soon with gas cap code keep coming on even after buying new gas cap?


Get gas cap from dealer as some vehicles are having issues with the after market caps. What is the actual code and what's the vehicle year, make and model?

May 20, 2012 | Pontiac Grand Am Cars & Trucks

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Ran out of gas recently. when refueled and started again,check engine symbol stayed on? well mainted and has always ran great since new.


Sometimes the check engine light will come on if the fuel cap is not on tight enough. Check the fuel cap for an intact seal and install at correct tightness.

A major auto parts store will read out the stored trouble code in the car's computer for free. If the code pertains to the fuel EVAP system, the code probably set because you ran out of gas. Copy down the code and then have it erased. The check engine light should go out. If it comes on again, have the code read and the problem checked out.

Mar 05, 2011 | GMC Sierra Cars & Trucks

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Experiencing various electrical problems


The most common cause of intermittent problems is a poor ground connection.Check the engine and the chassis grounds for tightness and clean surfaces.

Oct 31, 2009 | 1994 Volvo 940

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I have a 97 Ford F150 that has had a check engine light on for the past 3 years. Everytime and I mean everytime they do a diagnostic they tell me it is the O2 Sensor then the EGR - well I replaced them...


I had a similar problem with my 97 f150 4.6L. I work on it myself and after continuous check engine light with an EGR insufficient flow I replaced all 3 EGR components. (EGR valve, DTFP, and EVR regulator) Still got EGR insuffiecient flow. This Saturday I took the throttle body off (has the ports that EGR flows through) and WhaLaa!! It was totally, and I mean TOTALLY clogged with tar and gunk from the exhaust. 3 hours to clean it out and soak it and clean it all up. Fixed the problem, 300 miles later and it's still good with no codes. I have my own code reader so it made it easy to check sensors. All read "OK" now. It was worth the 5 hrs spent taking it apart and reassembling. I changed spark plugs and PCV too!! Good luck. You can do it yourself If you tell yourself you can.

Jun 18, 2009 | Ford F-150 Cars & Trucks

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2005 chevy cobalt check engine light


make sure the gas cap is on tight. vapor recovery system depends on the closure of the gas cap. if that did not solve your problem, I would suggest to get a new gas cap first, before going to the dealer or any repair shop for a turn-up.

May 28, 2009 | 2005 Chevrolet Cobalt

2 Answers

Check engine light keeps coming on replaced gas cap already


Your problem is in the evaporative emission system which is designed to prevent the escape of fuel vapors from the fuel system. Leaks in the system, even small ones, can allow fuel vapors to escape into the atmosphere. The light coming on can be caused by one of the following:

1. Defective or loose fuel cap
2. EVAP canister or hose cracked- not connected
3. Purge or vent solenoid defective
4. Vacuum leak at engine Government regulations require on-board testing to make sure that the evaporative (EVAP) system is functioning properly. The leak detection system tests for EVAP system leaks and blockage. It also performs self-diagnostics. You have tried the easy fix, the gas cap. Finding the leak now will require special equipment and testing procedures, might be better left to a professional.

Please let me know if this information is helpful. Positive feedback is appreciated. Thank You!

Mar 18, 2009 | 2003 Dodge Caravan

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