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Fuel PUmp Problems/solution
Okay, I been there and done that, and learned what to do and NOT do.
Step1, verify the fuel pump is not working. THis can be done somewhat just by listening for the pump to run, but check fuel pressure at the fuel rail.
Step2 If the pump is not working, it might not be the pump, but an electrical problem. Remove the trim-gaining access to the pump assembly's wires, there is a TWO prong connector that supplies power, the other wires are for the float and the low fuel switch. Verify 12volt DC at this plug. OPTION: install a simple switch while there and use this as a theft deterrent device! If no voltage- you have an electrical issue. U can properly fix, or simply run the pump off a key-on 12 volt source.
If U have voltage and the pump is not running, U need a new pump! DUH
Two long shots which might solve problem.....
Temporarily Reverse the polarity-causing the pump's motor to run backwards, this might "unfreeze" the motor. 2nd Longshot, give pump a shot of 24 volts! The added voltage might cause motor to unfreeze-be sure the 24 volts ONLY goes to pump and not car's electical system.
Chances are U will be replacing the pump. My 1987 sat for awhile, 2-3 years?
Replacing the pump is not really difficult but time consuming, have to remove a lot of stuff in the way. My BIGGEST MISTAKE: I took off a hose at the wrong end. The Haynes manual clearly stated to remove the (Main?) hose off the (tank?) and not the (Car?). This slight flaw made the tank very difficult to remove and IMPOSSIBLE to re-install. Haynes manual, pg 112 section 5:9 take hose off the TANK!!!
Safety: Be sure vehicle is PROPERLY raised and supported, U will be spending a lot of time under car. Years ago, I had my car somewhat-almost- properly supported, about 15 minutes after I got out from underneath the car-it slid off one of the jackstands!!!!!!!!!
Best wishes
Kerry
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