What could it be? Flashing check engine w/o dtc
04-04-2012, 11:31 PM
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Staging Lane
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What could it be? Flashing check engine w/o dtc
Well my truck recently started to get a Check engine Flashing light... ive been told its a misfire thing.. but the wierd thing is that the guy at the shop doesnt get no codes... he checked sparkplugs and wires ect.. he says their good.. i would think it could be a clogged injector... the truck sounds like it has a baby cam but it doesnt LOL any advice what could it be... ive been told it could be the crank sensor...The truck runs fine too.. but havent tried WOT.. i think my best bet is to take it to my tuner and check for DTC running it.. with HP tuners.. ??
04-05-2012, 12:21 AM
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On The Tree
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Mine did the exact same thing your talking about. Turned out the bolts in the head had loosened up after the header install. All that extra air going out through the exhaust fooled the pcm into thinking it was lean. So it added more fuel and was pig rich! It idled ok, but choppy, and bogged like hell when ya out your foot into it. It was also throwing random misfire codes.
04-05-2012, 12:31 AM
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Staging Lane
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Mine did the exact same thing your talking about. Turned out the bolts in the head had loosened up after the header install. All that extra air going out through the exhaust fooled the pcm into thinking it was lean. So it added more fuel and was pig rich! It idled ok, but choppy, and bogged like hell when ya out your foot into it. It was also throwing random misfire codes.
04-05-2012, 12:34 AM
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Staging Lane
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yhea well this started today after i got my built tranny i had a TB stall but now i have a TBSS stall its smaller but the guy said they are better in topend bla bla hes going to keep it for tonight and check it tomorrow to see if all cables are good down there ect... hopefully its something minimal... and if it dont stop hes taking it with my tunner and puttin it on HPT and running it to see what comes out.. he thinks it could be my crank position sensor... and yhea the truck idles a little choppy..
04-05-2012, 01:04 AM
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