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Knocking noise

Tiny
NIELCOOP
  • MEMBER
  • 1991 ISUZU TROOPER
  • 2.3L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 228 MILES
I am not sure I let it warm up long enough before taking off yesterday. It was cold out, went down the street got on the interstate, now I am hearing a knocking noise.
Wednesday, January 4th, 2017 AT 11:00 AM

3 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Check engine oil first if you can pull one spark plug at a time if the noise goes away it is that cylinder and it is either a rod bearing or piston problem.
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Wednesday, January 4th, 2017 AT 12:11 PM
Tiny
NIELCOOP
  • MEMBER
  • 4 POSTS
We change the tensioner pulley the bearing was bad in it but that did not help the noise. Why when I go down the road when it gets like third or fourth gear? It is an automatic though you do not really hear it anymore.
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Wednesday, January 4th, 2017 AT 4:15 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Did you try what I suggested? Also, check to see if torque converter bolts are loose especially if you have the noise in neutral then it stops when you put it in gear.
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Wednesday, January 4th, 2017 AT 4:36 PM

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