Knocking noise

1991 ISUZU TROOPER
228 MILES • 2.3L • 6 CYL • 4WD • AUTOMATIC
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NIELCOOP
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  • 4 POSTS
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.
Jan 4, 2017 at 11:00 AM
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HMAC300
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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.
Jan 4, 2017 at 12:11 PM
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NIELCOOP
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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.
Jan 4, 2017 at 4:15 PM
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HMAC300
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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.
Jan 4, 2017 at 4:36 PM