IHADAV8.com - Turbo Buick Tech, and Nonsense
Tech Area => General Buick Tech => Topic started by: shmed on July 15 2018, 03:47:09 PM
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ok so I go to start the #@#$@ car\no start...
check 0 on fuel press gauge..
ok check fuses all good.
ok follow the chart from steves site.. power to relay yep power to relay with key on yep (signal )
applied power to pump from alternator pump turns on..
hmm ok changed out oem relay still nothing...
whats strange is when I turn the key ahead I get a rattle type sound coming from the dashboard?
ideas...
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Normally, it would seem the relay is no good but? Both fuses are good....
Is there a hot wire to the pump on the car?
Okay, when the connector is off the relay, you should be able to jump the connector with a paper clip or wire, and the pump should run. Does it? (pink/black to gray)
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ok found it I swaped out the ecm now it works I don't understand why I had power an signal power ? #$@#$@ buick
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Me either...my next suggestion would have to start it with the jumper in place and then check the green/white wire to see if it still had power on it with it running...
good you solved it! We may all have to suck it up and go to aftermarket if the factory ecms get too flaky
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ok found it I swaped out the ecm now it works I don't understand why I had power an signal power ? #$@#$@ buick
I was going to mention that! I had the same issue and would jumper the pump to get home from the track or where ever it would stall. Putting in a new ECM fixed that for me.