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2nd Generation
Power Loss after plug/coil change
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<blockquote data-quote="Zombii88" data-source="post: 15468148" data-attributes="member: 183215"><p>Hi all, new to the forum. Recently purchased an 02 Lightning (first foray into S/Cs, other car is a 12 gt). I was getting in the interstate a week or so back, hit the throttle, truck and supercharger all running just fine. After a strong shift at 9lbs the service engine soon light began to flash for about 15-30 seconds with a little bit of shuddering. Misfire. Ordered new plugs and coils (truck has 88k on the clock, figured might as well do them both and check that box), Wilt waiting on them to come in, truck did the same thing a few days later. It was running normal between the two incidents. Well I had to get it home after that and could tell it was in limp mode, wouldn't rev over ~2200rpms. Let the truck sit until I had a day off to do the tune up. Swapped new NGK tr6s and msd coils in. Noticed all the old plugs were in rough shape and gapped at .06 or higher (to my knowledge truck is stock minud a k&n intake and flowmaster exhaust). New plugs were gapped at .042-46 like it says to. Put it all back together, started up with a rough idle. That mellowed after a minute or so, assumed it was adjusting to the new plugs and coils. Took it for a test drive around the block, as soon as the boost opened up above 6lbs it blew both the lines off the (I apologize I dont know the name of it) the metal pipe with the braided heatshield that runs from the SC down to the exhaust. Put them back on but, now the truck is incredibly weak. Idle is normal, but even floored the tach creeps up. Has a boost ~7 or 8lbs but still wont accelerate worth a damn. Cant find any leaks in the engine and theres still vacuum in all the lines. Going up the hill to the entrance of my neighborhood the truck fell on its face, wouldnt rev over 1900, even with boost. Got it back in the garage, cant find any loose connections and the idle in P is normal. Did notice the engine bay and SC have excessive heat, but gauges reading normal. Crawled underneath and the cats crackled for a good hour and were radiating a serious amount of heat. Im leaning towards fried cats due to the misfire, performance and fuel economy are near non existent right now. The spin around the block was maybe 2 miles and burned 1/8th tank. I was planning on replacing the midpipe and exhaust with magnaflow, but before I pull the trigger on 1200$ in exhaust wondering if anyone has any other ideas as to what it might be. Not sure when the fuel filter and MAF were replaced last, planning to those as well here soon, but the truck gets fuel and idles normal, just feels like its bogged down or held back. Any help would be appreciated. Oh also, no codes and no CEL on. Thanks</p></blockquote><p></p>
[QUOTE="Zombii88, post: 15468148, member: 183215"] Hi all, new to the forum. Recently purchased an 02 Lightning (first foray into S/Cs, other car is a 12 gt). I was getting in the interstate a week or so back, hit the throttle, truck and supercharger all running just fine. After a strong shift at 9lbs the service engine soon light began to flash for about 15-30 seconds with a little bit of shuddering. Misfire. Ordered new plugs and coils (truck has 88k on the clock, figured might as well do them both and check that box), Wilt waiting on them to come in, truck did the same thing a few days later. It was running normal between the two incidents. Well I had to get it home after that and could tell it was in limp mode, wouldn't rev over ~2200rpms. Let the truck sit until I had a day off to do the tune up. Swapped new NGK tr6s and msd coils in. Noticed all the old plugs were in rough shape and gapped at .06 or higher (to my knowledge truck is stock minud a k&n intake and flowmaster exhaust). New plugs were gapped at .042-46 like it says to. Put it all back together, started up with a rough idle. That mellowed after a minute or so, assumed it was adjusting to the new plugs and coils. Took it for a test drive around the block, as soon as the boost opened up above 6lbs it blew both the lines off the (I apologize I dont know the name of it) the metal pipe with the braided heatshield that runs from the SC down to the exhaust. Put them back on but, now the truck is incredibly weak. Idle is normal, but even floored the tach creeps up. Has a boost ~7 or 8lbs but still wont accelerate worth a damn. Cant find any leaks in the engine and theres still vacuum in all the lines. Going up the hill to the entrance of my neighborhood the truck fell on its face, wouldnt rev over 1900, even with boost. Got it back in the garage, cant find any loose connections and the idle in P is normal. Did notice the engine bay and SC have excessive heat, but gauges reading normal. Crawled underneath and the cats crackled for a good hour and were radiating a serious amount of heat. Im leaning towards fried cats due to the misfire, performance and fuel economy are near non existent right now. The spin around the block was maybe 2 miles and burned 1/8th tank. I was planning on replacing the midpipe and exhaust with magnaflow, but before I pull the trigger on 1200$ in exhaust wondering if anyone has any other ideas as to what it might be. Not sure when the fuel filter and MAF were replaced last, planning to those as well here soon, but the truck gets fuel and idles normal, just feels like its bogged down or held back. Any help would be appreciated. Oh also, no codes and no CEL on. Thanks [/QUOTE]
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Power Loss after plug/coil change
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