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SN95 Cobras
Low RPM stumble/miss
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<blockquote data-quote="ForcFed93" data-source="post: 15620361" data-attributes="member: 24561"><p>All of my research pointed me towards a faulty O2 sensor. I replaced both upstream O2 sensors with OEM Motorcraft prior to installing the ORX. The CEL resolved,but the misfire problem persisted. I've been wanting an ORX as well and the car was giving off a heavy smell that reminded me of clogged cats. I didn't think it would solve it, but I figured, why not?</p><p></p><p></p><p></p><p>The problem has persisted with both the factory H-pipe that has been on there since the car was born and after I installed the ORX. I highly doubt it's an exhaust leak, especially considering that the P1131 resolved with a new O2 sensor. I've sprayed every vacuum line I could see to try to detect a leak with no luck. I'm not ruling it out as a possibility, but I haven't been able to find one.</p><p></p><p></p><p></p><p>I'm hoping it's the coil packs since I have a pair arriving today. I'll try to get them installed this evening to determine if they have an effect. It just feels like a spark issue to me. If the coil packs don't resolve it, I'll either pull the plugs and replace with cheapo autolite 764 coppers, or try to find a way to datalog it.</p></blockquote><p></p>
[QUOTE="ForcFed93, post: 15620361, member: 24561"] All of my research pointed me towards a faulty O2 sensor. I replaced both upstream O2 sensors with OEM Motorcraft prior to installing the ORX. The CEL resolved,but the misfire problem persisted. I've been wanting an ORX as well and the car was giving off a heavy smell that reminded me of clogged cats. I didn't think it would solve it, but I figured, why not? The problem has persisted with both the factory H-pipe that has been on there since the car was born and after I installed the ORX. I highly doubt it's an exhaust leak, especially considering that the P1131 resolved with a new O2 sensor. I've sprayed every vacuum line I could see to try to detect a leak with no luck. I'm not ruling it out as a possibility, but I haven't been able to find one. I'm hoping it's the coil packs since I have a pair arriving today. I'll try to get them installed this evening to determine if they have an effect. It just feels like a spark issue to me. If the coil packs don't resolve it, I'll either pull the plugs and replace with cheapo autolite 764 coppers, or try to find a way to datalog it. [/QUOTE]
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Low RPM stumble/miss
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