90 L98

I was running errands last night and when I fired up the car to leave the last stop, the engine started but idled very poorly and couldn't make enough power to go over 2mph. Didn't feel like a miss... just very down on power.

After I was towed home, I put the fuel pressure gauge on and while running I was getting maybe 20psi.

The fuel filter and pump have under 2k miles on them. The old pump died about 2 months ago. and I changed the filter at the same time

I installed a new pump (warranty replacement) last night and now I get no pressure with the key on but the pump does run for the normal 2-3seconds. It does spray out some fuel from the output line of the tank assembly (rubber hoses off) during the 2-3 second run. Also, no pressure builds while cranking and the car doesn't start.

I plan on changing the filter again when I get home from work to rule it out although a plugged filter this quick seems odd. Any other ideas on what to check?

Thanks!

I would check the filter... the pump was a logical first check.

I would also make damned sure the Fuel Pressure Regulator hasn't blown up.

How do I check that the FPR is OK?

Quote:

You can pull the vac line off and smell for fuel leak, but that may not tell you. There is also a fsm check for seeing if it's leaking. Otherwise you pull the plenum and remove/inspect it.

I would change the filter, some have been known to be bad out of the box.

Matthew

Well, it was the filter. Put on a new Wix (same as before) and all is well. I am a bit curious as to why it lasted less than 2k miles - Wix is supposed to be a decent brand, I thought.

Even tho the pump wasn't the problem, the accessories that came with the new one included replacement wires to redo the in-tank power wires which were not in great shape. Silver lining and all that

Thanks for the help!

You ought to cut apart the new one you took off just to see what happened.

OK







Looks like a filter. I don't see anything obvious. I can blow through it with no resistance - in fact I blew the gas out of it before cutting.
(These pics brought to you by Felpro )

Doesn't make much sense, does it? Especially if you could blow thru it before you cut it apart.

Sometimes things don't make sense but as long as you running now, so what.

Quote:

It would seem the wires, not the filter, were the problem.

Quote:

There was no pressure after those were fixed yesterday. Didn't start working until the new filter was in.

That's very bizzare..

Pull the element off and see if something is blocking the side we can't see.

Not much inside but an empty cavity.