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Cameron1294
New User
Feb 1, 2016, 1:51 AM
Post #1 of 5
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Help With My Suburban
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I have a 1999 Chevy Suburban with a 5.7L 350 Vortec engine, 2-wheel drive. I had a rebuilt 4L60E transmission put on it and at first it started a little bit rough but pretty normal. It then started making a little bit of a grinding noise, then it got a little bit worse but it would still start and ran fine. One morning, it started but what I think was a metal grinding noise was really bad. I went to come home at the end of the day, and when I went to start it, the grinding was still really bad. Instead of turning over, the grinding sound went away and I heard a spinning sound. I thought it was the distributor shaft spinning but I’m hard of hearing and I’m not very good at localizing sounds so that was just my best guess but I’m positive I heard a spinning sound start as soon as the grinding stopped. (All these sounds are occurring while trying to start the truck by the way.) When I looked under the hood and had my wife try to start it, it sounded like the distributor shaft was just spinning free. I had it towed and pulled the distributor shaft, which looked normal, and reinstalled it with correct timing. The spinning sound was gone but grinding sound was back when I tried to start it again. This engine only has about 30,000 miles on it. Does anyone have any ideas about what type of problem I might be looking at? I would very much appreciate any help. Thank you.
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Feb 1, 2016, 3:41 AM
Post #2 of 5
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Re: Help With My Suburban
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Moved this thread to Transmission section as site has an expert trans guy who I think will be by. This trans just got redone and starter acted up right away. First move should have been go right back and have that checked if done professionally.
Starter's mount to engine is placed to the gear on the torque converter and matters. Few things possible there including just installation of trans went wrong or starter was harmed in the replacement.
Please allow some time for "gsferraro" is his user name to come by as the trans specialists. It still involves the starter and more to simply R&R a trans and need to zoom in on what went wrong,
T
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gsferraro
Veteran
Feb 1, 2016, 5:38 AM
Post #3 of 5
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Re: Help With My Suburban
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Hello,
It almost sounds like you have a starter problem, first thing i would do is have the starter and flywheel checked. Gary
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kev2
Veteran
Feb 1, 2016, 7:13 AM
Post #4 of 5
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Re: Help With My Suburban
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X 2 - starter was my knee jerk suspect.
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Feb 1, 2016, 7:33 AM
Post #5 of 5
(1678 views)
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Re: Help With My Suburban
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Ditto again but happened right when trans was installed? Kinda sounds like a starter drive if a humming sound?
Cameron - you can't set timing or pull distributors on "R" code Vortecs without the equipment to set the timing. Best you can do is get it close enough to run at all. You don't turn it like lots older ones. Add that to your list when this noise is found + fixed, T
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