1995 Chevrolet Blazer Loud knock

Tiny
STEFANLOBNITZ
  • MEMBER
  • 1995 CHEVROLET BLAZER
  • 4.3L
  • V6
  • 4WD
  • AUTOMATIC
I have a jeep wrangle that I put a 4.3 vortec v6 from Chevy and it has a painless wiring harness the problem is a loud knock that seems to come from bottom of engine near transmission an the knock goes away a lot when I increase Rpm's. I wanted to know if it could be a sensor or worse? Please help
Saturday, March 1st, 2014 AT 4:47 PM

1 Reply

Tiny
TY ANDERSON
  • MECHANIC
  • 719 POSTS
Knocking in any engine is really bad. Check the engine oil level. Isolating these noise are difficult. If you can start the engine if you disconnect the torque converter or clutch you can rule out the trans from the engine. If the noise is still there then your knockin is with your engine. If you don't hear the noise check the flexplate for cracking & then transmission. Start hear and get back to me.
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Saturday, March 1st, 2014 AT 5:17 PM

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