'03 v70 Base cranks, no start, no codes, pump's audible

Post by **olpossum** » 20 Mar 2024, 12:55

Went out one morning last week, it cranked but didn't start. The pump ran for about a third of a second, like always when you start it. There's no gas in the fuel rail. 270K miles, pretty original, seems to be the PEM, which I'm not finding. And that removable lid behind the driver's seat, I removed it, and there's nothing else there to remove. Replaced the fuel pressure sensor. Anybody know where the PEM is in this car?

Post by **jonesg** » 21 Mar 2024, 05:39

olpossum wrote: ↑20 Mar 2024, 12:55 Went out one morning last week, it cranked but didn't start. The pump ran for about a third of a second, like always when you start it. There's no gas in the fuel rail. 270K miles, pretty original, seems to be the PEM, which I'm not finding. And that removable lid behind the driver's seat, I removed it, and there's nothing else there to remove. Replaced the fuel pressure sensor. Anybody know where the PEM is in this car?

probably has no pem.

Post by **RickHaleParker** » 21 Mar 2024, 08:02

olpossum wrote: ↑20 Mar 2024, 12:55 Anybody know where the PEM is in this car?

Check passenger side of fuel tank near fuel filter.

Post by **olpossum** » 23 Mar 2024, 18:07

Thanks for the reply, I found it, hidden. Got it out, unseen, with the aid of quite a bit of profanity.

Post by **jonesg** » 23 Mar 2024, 20:04

olpossum wrote: ↑23 Mar 2024, 18:07 Thanks for the reply, I found it, hidden. Got it out, unseen, with the aid of quite a bit of profanity.

if the pump primes, the pem is responding.

reading the fuel pressure at the rail is the test i'd do.

Post by **olpossum** » 07 Apr 2024, 13:16

The fuel pump runs when you turn the key to position II--the one right before it cranks, anyway. I appreciate you responding, this is a problem for me. It appears the fuel pump relay is on a little board up under the dash near the driver's door. Judging by the length of the bundle of wires running to it, it can be removed for access, do you know how it gets released? Can't even get a phone up in there.

Post by **jonesg** » 07 Apr 2024, 14:16

olpossum wrote: ↑07 Apr 2024, 13:16 The fuel pump runs when you turn the key to position II--the one right before it cranks, anyway. I appreciate you responding, this is a problem for me. It appears the fuel pump relay is on a little board up under the dash near the driver's door. Judging by the length of the bundle of wires running to it, it can be removed for access, do you know how it gets released? Can't even get a phone up in there.

if its part of the cem there are plenty of youtube videos showing removal.

Post by **erikv11** » 07 Apr 2024, 22:33

Cycle the key four times to position two, instead of just one time. Still no fuel pressure at the rail?

Post by **olpossum** » 17 Apr 2024, 07:37

Checked the fuel pressure with a gauge, no pressure at the rail. Cycled the key 4X, no fuel, no pressure at the rail. I had replaced the fuel pressure sensor. I just removed the PEM & its components, no corrosion found, no evidence of moisture, ever. The sound of the fuel pump is odd, it revs up and then makes a winding-down sound, every time, rather than the normal holding-pressure type abrupt stop.

Post by **abscate** » 19 Apr 2024, 13:08

Did you open the PEM? The corrosion damage is on the inside

See here

viewtopic.php?p=556647&hilit=2005+v70+PEM#p556647