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Post by dsgray16 on Dec 3, 2005 15:14:18 GMT -3
So i took it auto zone, its throwing codes for both O2 sensors, i replaced those. It runns better and mis fires or looses fuel presure less but it STILL DOES IT! its time to take the damn thing to a shop, im sick of this.
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Post by axle on Dec 3, 2005 17:35:23 GMT -3
Maybe the plugs got a little f-ed up when it was running bad? Maybe check em', plugs tell a story. Bob
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Post by chrometj on Dec 3, 2005 21:26:33 GMT -3
if that can happen to plugs when it was running bad, replace them, theyre a cheap thing that will give you more piece of mind plus run better..
what codes is it throwing AFTER you replaced the 02 sensors...that is also important to know
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Post by dsgray16 on Dec 4, 2005 15:03:13 GMT -3
Yeah the check engine light has been going on and off now, which is strange cuz its th efirst time its been off since i bought the damn thing. Ill take it to get scaned again see what its throwing now, maybe get a new set of plugs
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Post by jeepininmaine on Dec 5, 2005 1:11:04 GMT -3
after you replace things that are throwing codes you have to reset the computer to clear the codes.then drive it.if the light comes on again rescan it.just because it throws an o2 code doesn't mean the sensors are bad.it just means that the computer has either pegged to fill rich or full lean.could be a number of things causing that code from a faulty tps to a bad egr valve.the autozone style scanning is very minimal.before you replace any more parts$$$$ take it to a legit place and have it scanned by someone with a real scanner.around here we can get them scanned for about 65 bux at the dealer.not sure how your dealer works but the chrysler/jeep dealership here will do a flat rate diagnostic scan..and usually wave the fee if i have the work done there.even if you pay for an hours labor at the dealer you'll get a legit answer.its your money but once you cover the basics i feel your better off spending the cash to get a strait answer.
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Post by mmagnumpi9 on Dec 5, 2005 2:09:59 GMT -3
I have to agree with you on this one. I had a similar problem with my last car and we couldnt figure it out. Neither could the local shop down the street. We changed all the small stuff like you have been doing. Once we brought it to the dealerhsip they scanned it and had an explanation for what was going wrong in an hour and we knew exactly what needed to be fixed.
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Post by cyberxen on Dec 5, 2005 11:56:27 GMT -3
Make sure to check the fuel pump.
My Dodge Ram had a similar problem, it would start to get rough when on the highway or accellerating after it upshifted. Since there was a schrader valve on the fuel rail I was able to hook up a gauge, close the hood and drive it with the gauge connected and tucked under the windshield wiper so my Dad could read it while I was driving.
Sure enough, the bucking problem corresponded directly with a large drop in fuel pressure that was not present when idling. A new fuel pump fixed the problem completely.
If it is the fuel pump, beware of the cheap ones found at many auto parts stores such as Autozone, CAP, etc.
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Post by chrometj on Dec 5, 2005 19:58:24 GMT -3
fuel pump = drop tank, fix pump + raise tank + add cool new skid plate!
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Post by dsgray16 on Dec 5, 2005 22:13:25 GMT -3
yeah it would supprice me at all idf that what it was. Its strange though, it was running fine yesturday, if it stats doing it agai its going strait to the shop, iv replaced so uch stuff with no result, i dont want to waste any more time or money
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