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Old Jul 31, 2004 | 06:16 PM
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Default Anyone seen these problems?(updated)

Drove my car Houston to Illionois and back and while in Mississippi I stopped at a Shell station to fill up with gas. Filled her up with premium 93. Well when I got back in and started it up it started fine then it started stubling around and missing. I shut it off then started it again, same thing but then the car would quit doing it when it was given some gas. It drove fine as soon I got it on the road and drove on the interstate but everytime you stop it starts missing. It threw no codes and drives fine once you get going. I have ran about 2 tanks through it since then and it still doing it. Any Ideas? The car has about 72000 miles on it I was thinking maybe injectors?

Last edited by jlrz28; Aug 6, 2004 at 06:49 PM.
Old Jul 31, 2004 | 09:23 PM
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im having the same probleam..i did trow a code it was the driver side o2, my car runs fine when i go WOT, when its in open loop mode, but when its in closed loop it runs like ****,i have change the 02 twice now...dont know what to do now.
Old Aug 1, 2004 | 12:41 PM
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can anybody help
Old Aug 1, 2004 | 06:14 PM
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if you ran the tank low.. you might have trash in the tank. I'd change the fuel filter.
Old Aug 1, 2004 | 10:01 PM
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Bad gas+lazy/old O2's= stumbling, poor idle, porr mileage,etc. But that usually throws a code(s). I would replace the fuel filter first, then hook it up to a diagnostic tool for more info.
Old Aug 1, 2004 | 10:42 PM
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With the O2 sensors going out, get a custom tune to take out the sensor.
Old Aug 1, 2004 | 10:42 PM
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And i am pretty sure the gas up north, at least in lubbock texas changes from 93-91 octane. In my mind that means the gas is cheapper and will have more trash in it.
Old Aug 1, 2004 | 10:59 PM
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Sounds a lot like a vacuum leak, chek your hoses before spending big money on a fuel pump. A vacuum leak could make you get an SES light for a lean condition because it is un-metered air past the MAF. If you don't find a leak I would start at the fuel filter.
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Old Aug 2, 2004 | 12:07 AM
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heres the thing it runs good when you floor it, like it kicks out the probleam. thats why i was saying 02's but i put new ones and it still does it some times
Old Aug 2, 2004 | 04:04 PM
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it mostly does it when you first start it up.
Old Aug 2, 2004 | 04:29 PM
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I put 02 sensors about 20000 miles ago when I put my headers in. The rear02s have been deleted. Im thinking maybe the ECM sensor or possibly K&N oil on the MAF?
Old Aug 2, 2004 | 10:25 PM
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could that be it.. the maf is dirty?? some times i will shut my car off and turn it back on and it will run better.like if i park and then get back in like in 5min's it will run bad,then i shut it off and turn it right back on. need more help

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Old Aug 2, 2004 | 10:51 PM
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Originally Posted by coolguy
could that be it.. the maf is dirty?? some times i will shut my car off and turn it back on and it will run better.like if i park and then get back in like in 5min's it will run bad,then i shut it off and turn it right back on. need more help
I can't believe a lot of these threads right here in a row are pretty much the same problem. over $2.00 a gallon and we get dirty watered down gas,WTF!!
I'm having a similar prob. My thread is shaking like a harley check it out.
Old Aug 2, 2004 | 11:00 PM
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it might not be the gas, cuz iv been through 4 tanks already
Old Aug 2, 2004 | 11:05 PM
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Originally Posted by coolguy
it might not be the gas, cuz iv been through 4 tanks already

I don't think thats what my prob is either, but I'm hoping it is
Old Aug 2, 2004 | 11:21 PM
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Maybe water in the gas, I've had this happen to me before. It stumbles a little while accelerating then get pissed at it and floor it and no probs. but I got a SES light. Took it in after three days of that crap and they scan it and it had water in the gas and also knocked out some purge solenoid. They replaced a hose and cleaned the injectors and hadn't had a problem since that was at 48k now at 151k. Cost me 200 bucks.
Old Aug 3, 2004 | 07:51 AM
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I think it's bad gas...cause I've been throwin codes too...and it only happens at idle. My code was something like too many ignition pulses. And it threw it at 700 rpm and 0 mph. Today I got in the car, and when I started it, the ses light was on, but once I got on the freeway, the light went out.

What gas station are you getting your gas from?

I use Shell alot, and I just realized that it started when Shell came out with their new additive gas "V-Power"
Old Aug 3, 2004 | 12:26 PM
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Check for vacuum leaks yet?
Old Aug 3, 2004 | 04:58 PM
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no not yet..
Old Aug 3, 2004 | 05:03 PM
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The place I got gas from was in Jackson, Mississippi on the way home. Ive had about 4-5 tanks through it now and the same thing is happening. I have thrown no codes at all! Yesterday I pulled off the air lid and cleaned the filter and cleaned the maf and the Throttle body, still same problem just not as often.



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