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Fuel pump problems? 200 1978

posted by  ekimyar on  Sun Aug 15 18:18 CST 2010
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last visit: Sun Oct 7 12:50 CST 2012
[RELATED]

Yup, Lucid was right-- jumpered 5 and 7 and the pumps appeared to run. Mine's a California 1978 with the O2 sensor also.

Curious what it was doing with 4 and 6... oh well.

So, I crawled under the car, and I saw that the ground wire for the main fuel pump was mostly torn off the terminal. I was excited-- haha, easy! I cleaned up the wire, crimped a new connection on there, and tightened everything up. Woohoo!

Except when I reconnected the battery, and started the car... same old problem. By that time, I was frustrated, so I cleaned the fuses and fuse panel with my dremel tool and called it day.

Anyway, next step, after talking to Dave/Volvo from Heck and confirmed by Machine Man Phil above, is to pull apart the fuel distributor, check the air flow plate and needle. I also plan to clean the throttle body, since that's on my list also
and I haven't done it yet.

I also checked my O2 sensor, and the bakelite plug pretty much disintegrated, but underneath it all, it had a good looking, clean connection. I did not check its function though.

Thanks to everyone for all the help! Brickboard and all of you have been great!






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