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88 k5 flywheel noise

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Old 05-15-2011, 08:03 AM
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Default 88 k5 flywheel noise

i have a 88 blazer 5.7 tbi ,700r4 trany . i noticed some noise under the truck , sounds like its comming from the torque coverter , i pulled the inspection plate and noticed my flywheel has a wobble to it , the truck runs pretty good but lacks power , could this noise get picked up by the knock sensor and retard my timing ? also what else could be making that noise? torque converter,flywheel, trany pump ? torque converter bolts r tight , the flywheel wobbles but not the converter, any help or ideas would b helpfull thanx
 
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Old 05-15-2011, 09:01 AM
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Could be a warped or cracked flex plate. A noise from the flex plate could be picked up by the knock sensors.
 
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Old 05-15-2011, 09:03 PM
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i would start with a flywheel i dont think there supposed to wobble
 
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Old 05-17-2011, 01:05 AM
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No they're not. Also check for loose bolts and oblong holes if the bolts are loose as well as the aforementioned cracks. Had a 82 2WD truck with this problem.
 
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