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Postscript: Fuel Pump/Electronic Ignition Mystery 200 1989

posted by  Schneller on  Thu Apr 14 04:22 CST 2005
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Thanks to the people who replied earlier to my query. I had the Wagon towed to a friend's house (who is better equipped and more mechanically inclined) and finally had the chance to work on it.

We got under the car and removed the leads to the old fuel pump: No Juice

Put the multimeter to fuse #6 on the buss: No Juice (I believe #4 was also dead)

Checked the 25 Amp fuse under the hood: 12.3 volts there. And that is the farthest that the electricty was traced.

The fuel pump relay clicks on and off when we turn the key on and off. Even so, should we check the contacts on the relay socket?

Do we smell a bad ECU? Earlier I mentioned I got a 1-4-4 error code on the diagnostic unit, i.e "Load Signal Missing (from LH control Unit) Control unit assumes the engine is at full load" Would the LH unit assume this because there might be a short somewhere? Or that the unit is shot? (as far as shorts, I have not had a single fuse blow with this current problem)

Thank you so much for your help!

AP

--
'73 164E/'76 240SW/80 240SW/89 240SW @315Kmiles!






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