Question about 2004 Saturn ION

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I bought 04 saturn Ion 2.2 sedan with 150k miles, runs great, however has really bad mileage problem - only 18 to 20mpg. What could be the problem? Plugs - injectors - O2 Senser - Air/fuel filter or all of the above. Can plugs cause this only. Confused!

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O2 sensors can drift off with time and are only picked up as bad by the ECU when they are almost beyond redemption. The other area to look at is the temperature sensor. Sometimes this does not pick up on the engine getting hot and the ECU, seeing a 'cold' engine keeps the fuel mix rich, as if trying to warm the engine all the time.

Posted on Sep 09, 2010

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My car is using more gas than it been why?


Time for a tune up..New air filter, spark plugs,wires, pvc valve...It makes a diffrents ...Also change gas stations.. Some gas is a lot better for you car..These are the ones I would start with..If you car is running good...Try replacing the pcv valve and air filter first.... Hope this helps

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What caus upon acceleratione my 2004 saturn ion occasionally slip out of gear at a stop then it will jump back in gear upon acceleration


Check your transmission fluid level. It may not be possible for the average owner to do this, as Saturn transmissions are made to he used for 100,000 miles, then serviced for another 100,000.
So they don't have a dipstick .
If you have had any leaks under it, it most likely is low .

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04 Altima 2.5 s w 150k changed cat 2014 1 yr later p0420 code again what r normal reads for 02 sensors? reads @ idle fluctuate @ .3V b1 sensor & .8V b2 sensor.anyone had p0420 that wasnt a bad cat


Those cars are notorious for engine problems unfortunately. The exhaust valves tend to warp from heat after around 200k miles. Therefore throwing the O2 codes. Best outcome and cost effective thing I can recommend is replacing the engine with a new or low mileage engine.

Feb 18, 2015 | Cars & Trucks

1 Answer

I just had my oil changed on my 2005 Saturn ION and now i get the 'chng oil' alert. what should i do?


  • Insert the key into the ignition and turn it to the "ON" position. There is no need to start the caricon1.png.

  • 2

    Press the button located in the center of the instrument cluster ONCE. The display should now read "OIL LIFE" instead of vehicleicon1.png mileage.



  • Read more: How to Reset the oil life monitor on a Saturn Ion ' eHow.com http://www.ehow.com/how_5658600_reset-life-monitor-saturn-ion.html#ixzz28jXOUbyz

    Oct 08, 2012 | 2005 Saturn ION

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    My 2004 saturn ion throttle sticks at between 1100 and 1500 rpms when i stop at redlights, etc. if i turn the key off and immediately back on, the idle returns to normal, (750-800 rpms), but may stick...


    Actually, you will have to have the throttle body bore cleaned physically. There will be carbon build up preventing the TB plate from closing completely. Lucas gas additive used twice a year will prevent this from reoccurring. Mercury Marine gas additive is GREAT as well!

    Jul 17, 2017 | Saturn Ion Cars & Trucks

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    Power steering goes out on saturn ion quite often. can reset by turning off and on again. worried it may totally go one day


    This is actually a problem that Saturn is aware of. Instead of issuing a recall, however, they put a 10 year 100,000 mile addendum on the warranty for the power steering column. If your car is still under the 100K mark, make an appt. and get it fixed asap, because you're SOL once it goes over that mileage. I, btw, had mine replaced two weeks ago for free. Over 100K, it's a 1200 dollar repair.
    Pretty sleezey way for Saturn to handle the problem if you ask me...

    May 31, 2011 | 2006 Saturn ION

    1 Answer

    I need to know if i need to change spark plugs


    Depends. How many miles are on the car? Is it idling or running rough? Are you getting poor gas mileage? Is your check engine light on? If so, take it to Autozone and ask them to plug their code reader into your car. They can tell you if you've got a mis-fire. If you do, then sure, go ahead and change the plugs. Make sure you gap them to the correct specification and torque to the correct spec.

    You could also take one of the plugs out and look at the tip. If it has a light-brown color to it and isn't covered in oil or looks burnt or black, then that plug is fine.

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    2004 Saturn Ion Idles at 2000 RPM no trouble light


    You could have a simple vacuum leak or a faulty computer.Listen to the engine with the hood up to see if you can hear a loud hissing sound that indicate a vac leak

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    1 Answer

    Odameter and trip fucntion will not reset or work


    the body control module has failed, this is the module that displays the mileage. the new module must be programed by the dealer.

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