ran into another problem
#13
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Join Date: Nov 2008
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well im pretty sure its the front pump in the trans
cus i fixed the leak and filled it up and it still makes the noise when slowing down
something else wierd though
the motor makes no noise but u can hear a small knock in the exhaust
cus i fixed the leak and filled it up and it still makes the noise when slowing down
something else wierd though
the motor makes no noise but u can hear a small knock in the exhaust
#14
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Join Date: Mar 2006
Location: EUGENE,OR.
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Bowhay-
Please tell us the setup & kind of truck. There could many things that make weird noises when rolling... that you do not hear when you are still. I.E; Speedometer/cable (I had this at slow speeds on a truck once), U-Joints, rotor/caliper, etc... it will help to understand more about your vechile & what is been done to it recently.
I know this "knock" noise you hear when it is in the exhaust I think.... but that is usually not actually a knock. That is typical of a less than stellar exaust system. Get rid of the glass packs if you really want to hear the exhaust clearly. I think the knock is an illusion the glasspacks are creating at a low idle/rpm.
Please tell us the setup & kind of truck. There could many things that make weird noises when rolling... that you do not hear when you are still. I.E; Speedometer/cable (I had this at slow speeds on a truck once), U-Joints, rotor/caliper, etc... it will help to understand more about your vechile & what is been done to it recently.
I know this "knock" noise you hear when it is in the exhaust I think.... but that is usually not actually a knock. That is typical of a less than stellar exaust system. Get rid of the glass packs if you really want to hear the exhaust clearly. I think the knock is an illusion the glasspacks are creating at a low idle/rpm.
#15
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it is an 83 chevrolet 1/2 ton with a brand new rebuilt 385
u joints are pretty new
i drained the trans and replace the filter and all seals
and just earlier today it knock just myseriously stopped
u joints are pretty new
i drained the trans and replace the filter and all seals
and just earlier today it knock just myseriously stopped
#16
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Join Date: Mar 2006
Location: EUGENE,OR.
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If it is intermitent, I wonder if you are getting pre-ign from timing or bad vacumn advance... you might consider cross ign between plug wires or a simple ign issue as well that might create that knock at certain RPM.