Running on cylinders 1 & 3 only... |
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Running on cylinders 1 & 3 only... |
AnthraxBird |
Sep 20 2016, 09:29 AM
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#1
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Newbie Group: Members Posts: 5 Joined: 20-September 16 From: Indiana Member No.: 20,417 Region Association: None |
Hey guys, new here. My buddy and I are working on a 72 1.7L and it's only running on 1 and 3. Cleaned and checked the trigger points, still no dice. Now, when you unplug the connector for the trigger points, it runs on all 4, for about 3 seconds til it starves of fuel. Input?
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TheCabinetmaker |
Sep 21 2016, 12:52 PM
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#2
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I drive my car everyday Group: Members Posts: 8,304 Joined: 8-May 03 From: Tulsa, Ok. Member No.: 666 |
Yes. The fuse to the rear is for the pump. There is also a relay there for the fuel injection. I "think" its the middle one. Don't just look at the fuse. Roll it in its holder or take it out and check it with a meter. Check the holder for continuity too.
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pbanders |
Sep 21 2016, 01:23 PM
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#3
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Senior Member Group: Members Posts: 939 Joined: 11-June 03 From: Phoenix, AZ Member No.: 805 |
Yes. The fuse to the rear is for the pump. There is also a relay there for the fuel injection. I "think" its the middle one. Don't just look at the fuse. Roll it in its holder or take it out and check it with a meter. Check the holder for continuity too. +1 If the relay and fuse are good, check to make sure you're getting 12V to the board for 1.5 seconds when you turn the key to "on". The relay boards are old and the undersides are often in poor shape, as well as the connectors. If it were me, I'd start at the ECU fuel pump relay pin (#19), and trace it until you find where it goes open. |
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