Fuel Pump Wiring Harness

[hpracing10]

Is it necessary to replace the wiring harnesses going to the fuel pump when a new fuel pump is installed? I was just curious if these ever go bad. Thanks for any replies.

[ryan_hermanutz]

No it's not completely necessary, but do it anyways it will save you time, money and a major hassle.

[rodram]

... general wisdom is to replace the harness at the same time as a fuel pump

... there is sometimes corrosion that builds up on the wiring and contacts, so the price of the harness is well worth the investment in preventative maintenance

... saves the hassle and time of dropping the fuel tank again when you could have looked after it all at one time.... and saves getting stranded somewhere if the truck won't start for you.

[WaterGuy]

Replace the relay as well.

Cheap insurance.

Cheap peace-of-mind.

[jblakeney]

Yeah, most new pumps has a new connector on top of the pump.

 

I know on my old pump the connector was like

- -

- -

 

and the new one was

- - - -

 

So I had to change the wiring harness, when I changed my pump. The Carter Rep. told us that the harness should be changed every time on GM's trucks and cars. As, they tend to gather oxidation (corrosion) on the terminals causing a low voltage problem. Which leads to the death of the pump.

 

Jbo