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Bad gas or something worse? #883514 04/30/08 07:21 AM
Joined: Nov 2007
Posts: 43
C
Chris_Eichman Offline OP
Getting the Wheeling Fever
The sportage was nearing empty (ie. the light was on) so I pulled into the gas station and filled it. 15 seconds or so after I pulled out of the gas station in began to sputter and backfire but didn't stall. I have driven it about 50 miles like this and the condition has not improved. While driving the Check Engine light flashes. I pulled the codes when I made it home and there were "Low voltage to Bank 1 sensor 2" and "Misfire on Cylinder 3" I have had the first code for quite a while. Do you think it is just bad gas, or do you think there is a more serious problem? FYI, the gas tank is brand new (less than 2 months) and the pump and filter were replaced at the same time. Any thoughts?

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Re: Bad gas or something worse? [Re: Chris_Eichman] #883515 04/30/08 12:49 PM
Joined: Aug 2006
Posts: 894
bombardj1 Offline
Rock Warrior
had it been raining or real cold ? some of the guy's here have used some type of water dryer in the tank. # 3 plug could have went bad, how long from the last tune up ?

Re: Bad gas or something worse? [Re: Chris_Eichman] #883516 04/30/08 02:43 PM
Joined: Feb 2003
Posts: 2,243
DamKia Offline
Kia Moderator
Could also be the usual oil on the plug that just co-incidentally happened at the most confusing time.

Yes a bad plug could cause it, as could a bit of water, but the water would have to come through the injector and that would give similar results to a bad plug if fouled or blocked with water.

Low voltage bank 1 sensor 2 would be a blown heater fuse to one or both of the O2 sensors, could cause a "limp home" condition.


2002 Sporty , Ironman 2.5" spring, 2" body, 15 x 7 ROH wheels, K&N, 15 x 10.5 Simex Centipedes, Powerchip 91.

"Never argue with an idiot. They will bring you down to their level then beat you with experience!"
Re: Bad gas or something worse? [Re: DamKia] #883517 04/30/08 02:45 PM
Joined: Nov 2007
Posts: 43
C
Chris_Eichman Offline OP
Getting the Wheeling Fever
Quote

Low voltage bank 1 sensor 2 would be a blown heater fuse to one or both of the O2 sensors, could cause a "limp home" condition.


Where is the O2 heater fuse?

Thanks,
Chris

Re: Bad gas or something worse? [Re: Chris_Eichman] #883518 04/30/08 03:39 PM
Joined: Feb 2003
Posts: 2,243
DamKia Offline
Kia Moderator
Should be engine bay fusebox...

Could be the connector also at the sensor (corrosion/salt/etc)


2002 Sporty , Ironman 2.5" spring, 2" body, 15 x 7 ROH wheels, K&N, 15 x 10.5 Simex Centipedes, Powerchip 91.

"Never argue with an idiot. They will bring you down to their level then beat you with experience!"
Re: Bad gas or something worse? [Re: DamKia] #883519 04/30/08 03:58 PM
Joined: Nov 2007
Posts: 43
C
Chris_Eichman Offline OP
Getting the Wheeling Fever
Will check the fuse. Thanks! When I clear the codes will it take the vehicle out of "limp mode" or is there another process to do that?

Thanks!

Re: Bad gas or something worse? [Re: Chris_Eichman] #883520 04/30/08 04:21 PM
Joined: Feb 2003
Posts: 2,243
DamKia Offline
Kia Moderator
Clear the codes and it should be out of "limp home" (open loop mode = same as start-up/warm-up)


2002 Sporty , Ironman 2.5" spring, 2" body, 15 x 7 ROH wheels, K&N, 15 x 10.5 Simex Centipedes, Powerchip 91.

"Never argue with an idiot. They will bring you down to their level then beat you with experience!"
Re: Bad gas or something worse? [Re: DamKia] #883521 04/30/08 08:01 PM
Joined: Nov 2007
Posts: 43
C
Chris_Eichman Offline OP
Getting the Wheeling Fever
Well all the fuses were ok, I cleared the codes and it's still running awful. I had about 3 gallons used so I put some fuel stabilizer in and topped it off with 3 gallons of premium (no ethanol) gas. Any other suggesting before I start taking stuff off to look at the plugs?

Re: Bad gas or something worse? [Re: Chris_Eichman] #883522 05/01/08 01:08 AM
Joined: Mar 2002
Posts: 1,396
DennisThompson Offline
Body Damage is Cool
Check/replace the fuel filter, and run some injector cleaner through it. I think you could have got down to the dirt in the tank, sloshed it around with new gas and clogged the filter. If it was ok when you drove in to the pumps and not ok when you drove out it is most likely something with the gas. I had the same problem a few years back, ok before fill up, spitting sputtering and running bad after the fill up. I had several codes also. I spent about $500.00 on parts chasing codes and by accident fould the clogged filter. Changed it out and all was well.

Hope this helps, Dennis


95 Sportage, gone but not forgotten.
98 Jeep TJ, 4" Zone springs with RC Long arms, Ford 8.8", 4.56 gears & Detroit locker rear, D30, 4.56 & Detroit Trutrack front.
Re: Bad gas or something worse? [Re: Chris_Eichman] #883523 05/01/08 01:21 AM
Joined: Dec 2007
Posts: 316
H
homerdog Offline
Mudrunner
Have you replaced the plug wires lately? Mine started doing that and it was a plugged catalytic converter. I drilled out the honeycomb on the pre cat and replaced the plugs and plug wires. It ran fine for a while then started missing and backfiring and it came up with a misfire code. I replaced the coil pack and it is running great now.
I also did some modification on the O2 sensor so it would not throw a code and that seems to be working. I bought two used coil packs on line for $32 including shipping so now I have a spare.

Last edited by homerdog; 05/01/08 01:23 AM.
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