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| Engineering/Technical Ask technical questions about cars. Do you know how a car engine works? |
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05-06-2004, 12:20 PM
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#1 | |
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AF Newbie
Join Date: May 2004
Location: Elgin, Illinois
Posts: 7
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Would bad crank sensor cause random misfire and rough starts?
Ok, readers digest version on my winter beater. It's a 96's Olds 3.1, drove this thing for 80K+ miles without a SINGLE problem. Last month she started throwing P0300 (random misfire) and PO306 (cyl 6 misfire) at idle. So I replaced all the plugs, wires, fuel filter. Threw autotap back on and now cyl 2 was misfiring - so I replaced all six injectors, coil packs, ignition control module, PCM (went overboard but I just wanted this thing fixed)
Still same thing, took it to GM dealership and they said injector 5 was bad, so I replaced it again last night. Now I am getting random misfire codes and occasional misfire on other cylinders at idle and it is taking longer to crank over now. At a loss rt now, only thing I have not replaced is the crank sensor - could that be the culprit. Or what about the wiring harness? Guys have any other thoughts? thanks
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1999 WS6 Convertible #3599 Cartek Stage II-X Heads G5x2 Cam Maximum Evil Stage III Trans Yank PYE3600 Moser 12 Bolt / 33 spline / 3.73’s NXL Direct Port Nitrous (180 shot) Bunch of other stuff . . . .  Dynoed: 415rwhp NA No track times yet 2002 Ford Taurus SE (winter beater) 
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05-07-2004, 10:20 AM
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#2 | |
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AF Enthusiast
Join Date: Jan 2004
Location: Huntingdon, Pennsylvania
Posts: 532
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sure it could.
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