Ecoopr05@gmail.com wrote:
> My 1990 Civic Si stalls as I am coming to a stop less than 25 mph when
> the gas tank is at half or less than half. When it is over half it
> runs perfect. So far I have replaced the fuel pump and fuel filter.
> One thing I noticed which was weird my friend got diagrams from our
> local honda dealer for replacing the fuel pump. It is supposed to be
> located under the rear seat under a silver panel.

not on that vintage civic - the pump can only be accessed by dropping
the tank.

> I disassembled this
> and all I found was the fuel gauge.

the sender unit, that's correct.

> After dropping the tank I located
> the fuel pump on the back left side of the gas tank.
> My suspiscion is that an aftermarket fuel pump was put in the wrong
> area of the tank thus when the tank is less than half full then pump is
> not pulling fuel.

possible, but the pump is correctly located. make sure the feed pipe's
not bent and goes to the bottom of the tank properly. is the tank
dented at all?

> This makes sense to me because when coming to a stop
> the gas would shift to the front of the tank(where the fuel pump should
> be located) and since it is located at the back of the tank the fuel
> pump is just sucking fumes and very little gasoline.

i'd make sure there are no other problems first.
>
> Does this make sense, any suggestions? My next step was to relocate
> the fuel pump at the OEM location(under the rear seat) and perhaps it
> would reach the bottom of the tank better and would fix my problem?
>
again, look for other problems first. has the idle been set correctly
and does the iacv work properly? if you do all that, drop the tank and
check the pump. in fact, you may as well replace it since dropping the
tank is a real pita and you don't want to be doing it again any time soon.