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Fuel Pump & charging problems

posted by  Big Harry on  Mon Jul 11 04:51 CST 2005
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last visit: Sun Sep 21 11:06 CST 2014
[RELATED]

Where to start?/

Well, first of all, I would check the resistance across the positive and negative wires on the old main fuel pump. If it is not the same reading as placing the meter wires together, then it is not shorted and will not cause an excessive draw on the system. Check the new pump the same way. The resistance should be close to the old one provided that it isn't shorted out (same reading as touching the two meter wires together.)

Turn on the key, turn on the headlights, jumper the fuel pump to run. If the headlights dim excessively, the pump should be replaced. Personally, I would go back to the original pump as a datum point(provided it is not shorted)and trouble shoot from there.

I hope it helps, kind of hard to troubleshoot from a desk chair.

Regards,

--
Will Dallas, www.willdallas.us, www.willdallas.org, www.willdallas.com 86 245 DL 205K miles, 93 940 250K miles, 88 765 GLE 149K miles, 86 244 DL 200K Miles, 88 744T 200K miles






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New Fuel Pump & charging problems
posted by  sweedforspeed  on Mon Jul 11 04:37 CST 2005 >


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