Fuel pump issue maybe 93 Civic DX AT

Hi all,

My car has about 375,000 mile on it. Around 200 the relay was
resoldered and it worked fine. Somewhere around 300 (very loose
estimate) it started acting up again so I bought and installed an
aftermarket relay. Around this same time I had to replace the fuel
pump (which gave me plenty of warning of imminent failure).

Just recently it started acting up again but it's a little different
this time. One day after work about a month ago (Florida = warm
weather), with the car parked outside, it wouldn't start after a try
or two. Then on the third it did. This wasn't a 10 minute wait but
only a few. It happened again a few times within the next week. Once
while I was getting ready to go to work it happened.

I resoldered the aftermarket relay and it was still acting up. I
still had the original relay so I tried resoldering and installing
it......still acting up. I then (foolishly?) bought and installed a
new pump. Damn!

Sometimes it fails and then on the 'next' crank it start rights up.
Other times I turn the key, I don't hear the pump, and after a few
seconds without touching the key I do hear it and it will then start.
Right now it's in a no start mode and I'm hoping it will start soon.

So, I've done a little reading in my archives of this newsgroup and
have come to two possibilities. The ground for the fuel pump or maybe
the ignition switch. Just to note: Once started it does not stall (so
far).

Upon further reading on the web as I write this: maybe the ecu?

Any other ideas?

Also, I just threw my back out and can't do a lot of digging around.
Does anybody know where the ground for the pump is on this particular
year? (Upon further reading I think it's on the thermostat housing -
cleaned and still no start)

I hope I haven't left anything out.


Thanks,

John M.