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clunk going into reverse

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Old 02-11-2013, 09:31 PM
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So ive got a 92 4x4 5.0 with a 4spd manual after i let it warm up and put it into reverse it clunks its not a nice smooth shift like after ive been driving for awhile, any ideas?
Old 02-11-2013, 09:35 PM
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Is it a clunk or more of it grinding into gear? If its grinding that may be indication of air in the clutch system. If its a clunk I would have a look at the u-joints.
Old 02-11-2013, 09:38 PM
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if i go slow into it its a grinding but if i do it fast then i clunks and the truck will jump sometimes, wont stall or anything but why u joints? it only does it while sitting still not while driving in reverse
Old 02-11-2013, 09:40 PM
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Yeah sounds like you got air in the system, the clutch isn't fully disengaged so it keeps spinning the transmission as you put in in reverse. I would check the clutch fluid level and pump the pedal for a bit.
Old 02-11-2013, 09:45 PM
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sorry to pick your brain but this is the first manual and 9th gen ive ever owned so im trying to learn all i can about these trucks, if there is air in the system wouldnt that cause it to clunk going into forward gears as well?
Old 02-11-2013, 09:54 PM
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Not always because the gears are spinning in that direction to go forward so they will shift smoother. If you had a really soft clutch pedal its very noticeable and hard to even get it in gear. When you are shifting into reverse, you are changing the rotation of the gears so it will grind when force of the transmission is applied.

Check the clutch master reservoir under the hood, its a black cylinder on the firewall next to the brake master. Remove the little rubber diaphragm and look if you can see the fluid level. Should be about 1" from the lip of the reservoir, if its low add a little brake fluid to it.

After you checked that, put the diaphragm and cap back on, hold the brakes put it in neutral and pump the clutch pedal fast all the way to the floor and back up to the top. The pedal should start to feel firmer and harder, then it should shift allot smoother.
Old 02-11-2013, 10:04 PM
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sweet thanks!
Old 02-14-2013, 12:28 AM
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so i havent gotten a chance to check or bleed the clutch but there is a poping noise usually in reverse when the front tires are turned to the right
Old 02-14-2013, 08:04 PM
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Popping noises can be a couple of things, loose rivets for the cross member, bad radius arm bracket or worn coil towers.
Old 02-15-2013, 07:26 PM
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how do i check for that?


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