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Engine/emission check sign

The sign engine emission check in the dashboard,what will i do? change oil and tune up my car?

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The best thing to do is take it to an autoparts store and have them read the codes for the light. They do this for free. I can tell you that an oil change and tune up wont be able to fix this.

Posted on Mar 24, 2014

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Posted on Jan 02, 2017

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1995 buick lesabre vehicle has no power when going up hill and burns alot of gas


Hi RJ,

If the shop that performed the tune up didn't put the car on diagnostic test equipment - they may not have noticed a problem; as normal engine speeds needed for a tune up are seldom greater than idle.

Sounds to me like you've got a problem with the emissions system - or one of the sensors that provide information to the on board computer. This could be anything from clogged catalytic converter to a failed oxygen sensor.

Generally, you'd see a "Check Engine" or "Service Engine Soon" indication on the dashboard. Check to see if the bulbs work by shutting the car off, then turn the key from off to the start position - slowly. One position should give a "bulb check" - meaning power is applied to the indicator lamps in the dashboard to show you that the bulbs work. Note any that do not come on (you might need to consult your owner manual to learn what & where these lamps are). You should see the Oil, Temperature, Brake , etc. lights come on - along with the "Check Engine" / "Service Engine Soon" light (among others). The "Check Engine" / "Service Engine Soon" lights are usually yellow - while the others are red. If the light does not come on, you may be unaware of a problem because the light doesn't work as expected.

I'd return to the shop that performed the tune up and explain the symptoms and see if they can help. It may very well be something that a tune up can not fix.

Lastly, when you have a problem with the car - you might be better explaining to the service provider what the problem is - and let them figure out the cause; rather than doing the diagnosing yourself and assuming a tune up will fix the problem. When you do that, the provider simply does what you've asked. They know nothing of the problems you're experiencing.

I hope this helps & good luck!

Aug 23, 2012 | 1995 Buick LeSabre

1 Answer

What should I do to get my 87 ford econline straight 6 ready for a smog?


Before the emission test make sure your air filter is clean, change the oil, and make sure your engine is in tune. Worn spark plugs are the #1 emission item that will usually fail the car. Make sure the check engine light works properly. To check the light, turn on the ignition, the light should come on for a second or two and then go off. After the engine has started the light should remain off. If your light is on they will fail the car.

Nov 19, 2010 | 1987 Ford Econoline

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

Can't Pass Emission Testing because High Hydrocarbons and some shaking and stalling on cold engine starts.


Give it a tune up,change air and oil filter and oil.Put preimium gas in the tank. And change fuel filter.

Apr 13, 2010 | 1989 Nissan Hardbody King

2 Answers

How often do you have to tunne up a Venture 2000.


Well you should have a tune up about every 30,000 miles or so and you should change at least spark plugs and spark plug wires,you can also change air filter if needed and fuel filter.

Apr 05, 2010 | 2000 Chevrolet Venture

2 Answers

There is a sign on my maserati 3200 dashboard,


Read oil level means check the engine oil. Pull the dipstick and check the oil.

Oct 17, 2009 | 2005 Maserati 425

2 Answers

My 97 honda civic dx check engine light keeps coming on


Had this issue did you replace the exhaust

Jun 19, 2009 | 1997 Honda Civic

1 Answer

CHECK ENGINE FLASHES WHENEVER I DRIVE THE CAR.


The Check Engine light usually means the car has an emission system problem. Diagnosis requires an OBD2 scanner.

But first, check your gas cap. Is it loose? How good is the O-ring or gasket? A poor seal is the most common Check Engine cause.

Good luck.

Jun 01, 2009 | 2000 Subaru Forester

1 Answer

My 1992 Cutlass Supreme SL Olds failed emissions.


High NOX readings indicate a somewhat lean condition IE: hot exhaust. Possible causes are cracked and leaking vacuum lines or lazy oxygen sensors. If possible have a reputable garage with engine electronics scanner services check the sensor to see if its helping to create the lean condition

Apr 25, 2009 | 1992 Oldsmobile Cutlass Supreme

1 Answer

Volvo s80 2.9 auto 1999


you have a emission related code not a tune up /read the codes by volvo only then update your ?

Jul 06, 2008 | 1999 Volvo S80

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