'88 Civic starting problem

likewise....

 

I'm wondering the same thing...

If the pump is providing adequate pressure and has worked fine before then
what happens to the voltage if the fan blower is on max after the pump turns off?

 

I'm wondering the same thing...

If the pump is providing adequate pressure and has worked fine before then
what happens to the voltage if the fan blower is on max after the pump turns off?

 

I've wondered that as well... I figure it's probably pretty marginal. Thing is,
the pump is normally on for only a couple seconds until you start cranking, at
which point the voltage drops a lot more because of the starter.

All major grounds are checked and solid - at first there was no standard ground
wire from the battery to the block, so we use a set of jumper cables, both from
the negative terminal, one to the block, one to the body.

 

I've wondered that as well... I figure it's probably pretty marginal. Thing is,
the pump is normally on for only a couple seconds until you start cranking, at
which point the voltage drops a lot more because of the starter.

All major grounds are checked and solid - at first there was no standard ground
wire from the battery to the block, so we use a set of jumper cables, both from
the negative terminal, one to the block, one to the body.

 

I don't know that it's providing ADEQUATE pressure... only that it's providing
SOME pressure.

 

I don't know that it's providing ADEQUATE pressure... only that it's providing
SOME pressure.

 

Oh, and... power readings at the injectors were tested with meter grounded to
battery, block, and body, at different times (whichever was most handy for that
particular instance).

 

Oh, and... power readings at the injectors were tested with meter grounded to
battery, block, and body, at different times (whichever was most handy for that
particular instance).

 

It might be just a clogged fuel pickup.

 

It might be just a clogged fuel pickup.

 

If that was the case, there'd be no pressure on the pump and it would spin
freely; it wouldn't be drawing a ton of current.

 

If that was the case, there'd be no pressure on the pump and it would spin
freely; it wouldn't be drawing a ton of current.

 

No,a pump trying to pull on a clogged line draws more current.
It spins freer under normal loads.Simple hydraulics.

 

No,a pump trying to pull on a clogged line draws more current.
It spins freer under normal loads.Simple hydraulics.

 

Matt, hold off until you know for sure that this is the issue. Posting
as-it-happens is an invitation to severe -- and likely inaccurate --
speculation.

Your thesis is intriguing. I await the synthesis, empirically arrived at,
of course...

 

Matt, hold off until you know for sure that this is the issue. Posting
as-it-happens is an invitation to severe -- and likely inaccurate --
speculation.

Your thesis is intriguing. I await the synthesis, empirically arrived at,
of course...

 

Did ANYBODY attempt the particular procedure I prescribed? (To answer my
own question: evidently not.)

And does ANYBODY here EVER trim their posts?

 

Did ANYBODY attempt the particular procedure I prescribed? (To answer my
own question: evidently not.)

And does ANYBODY here EVER trim their posts?

 

I don't know if he tried any of the ECU readings. First thing I did when I got
there was test for the injector power, since he already had the meter out, and
noticed the excessive voltage drop... and proceeded to find the source of that.