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#1
10-30-2004, 02:24 PM
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RPM reving going down hill????
The RPM's in my 92 7.4 rev up and down as I go down hill. I have replaced the ignition modual and put new ignition wire on it but it still does it. It does not sound good. Thanks in advance.
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#2
05-16-2008, 11:14 AM
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Re: RPM reving going down hill????
FYI, My '91 7.4 started doing exactly the same thing when I replaced the stock exhaust system with a custom dual system (H-pipe, flowmasters, low-restriction cats). Been several years now & it still does it. A bit annoying, but doesn't seem to have any otherwise negative effect.
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#3
05-23-2008, 03:12 AM
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Re: RPM reving going down hill????
possible coil issue? Throttle position sensor?
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