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Revving issues

585 Views 2 Replies 2 Participants Last post by  requiem240sx
im not sure what is going on? but if i rev up when in neutural or the clutch all the way in. and watch the rpms it slows down every ounce in a while as its on its way up to 7000. i think my 240 might also be running slower then most. it doesnt rev up very quickly and is choppy when it does rev up. does anyone have any ideas on what this could be?
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my 91 was doing the same thing it wouldnt go past 2000 rpm and it was very choppy and backfired alot. I replaced the alternator cuz it wasnt charging the bat enough and it fixed the problem.
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