84 fuel pump has no power - Corvette Forum
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post #1 of 3 (permalink) Old 11-21-2008, 04:46 PM Thread Starter
Join Date: Nov 2008
Posts: 1
84 fuel pump has no power

My 84 Vette does not get power to the fuel pump. Replaced the fuel pump relay, jumped D & E and the car started and ran for 2 days normally. Car died while driving under normal conditions. Replaced relay again and replaced the connector to the relay, still no power to fuel pump.

Alternative source of 12 volts to fuel pump directly and the fuel pumps works, vehicle started but ran rough and died would start again too.

Jumped the oil pressure sending unit too.

I am leaning towards ECM.

Can anyone help ???

Thank you
jimjakmc is offline  
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post #2 of 3 (permalink) Old 02-22-2009, 09:48 PM
Join Date: Feb 2009
Posts: 13
not sure about an 84, does it have a VATS system? on an 86 if the VATS is armed it shuts down the fuel pump (no 12v)

look at the c4 starting sequence you can see what triggers the fuel pump
tdr1919 is offline  
post #3 of 3 (permalink) Old 06-16-2014, 11:08 PM
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Join Date: Jun 2014
Posts: 3
this last week, pulled combo send-pump unit from fuel tank.... cleaned up the contacts to ground ( corrosion ) solved no pump problem and yes the fuel pump relay already new.
As these cars get older, think corrosion.... particularly on ground return circuits to chassis.
FBryantHawkes is offline  
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