Electical Draw ? Lowers RPM ? 914 and 912E, Pull light switch and drops RPMs? |
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Electical Draw ? Lowers RPM ? 914 and 912E, Pull light switch and drops RPMs? |
thompson-mfr |
Dec 17 2013, 02:20 PM
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#1
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Thompson, Ryan Group: Members Posts: 198 Joined: 30-September 08 From: Silverton, OR Member No.: 9,598 Region Association: Pacific Northwest |
Hi All,
Finally got my car running better 74 914 2L FI. Thanks to all for suggestions. It turns out it was most likely the main power wires loose to my battery (fixed). Fuel was on and off. I noticed something else when setting my idle. When I turn on my headlights my RPM's drop. I recently acquired a 912E and it does the same thing, though not quite as much. I attached some pictures, just because I like threads with pictures better. A. Could this be my Battery? B. Grounds? C. All the above? D. Other_________? |
Mike Bellis |
Dec 17 2013, 05:09 PM
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#2
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Resident Electrician Group: Members Posts: 8,345 Joined: 22-June 09 From: Midlothian TX Member No.: 10,496 Region Association: None |
Most likely your electrical systems (both cars) need some cleaning and freshening. Resistive grounds and corrosion on terminals will increase the amperage of normal loads.
Disconnect all ground terminals, clean and reassemble. Wire brush the fuse panel terminals. Check the alternator wire for lumpyness under the insulation. This will indicate corroded wire. Wire has a life span. It is less than 40 years... (IMG:style_emoticons/default/poke.gif) If you do not know the date of the last time the battery cables were replaced... Replace them. Put in a new ground strap on the tranny. Do all this and the alternator should work better along with the rest of the electrical system. Basically you do an electrical tune up... (IMG:style_emoticons/default/smile.gif) |
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