Fuel pressure regulator

[The_Duckslayer]

I got this from my son tonight....

Its a 2002 Nissan Sentra SE-R Spec-V with a 2.5, 4cyl. Even Friggin Nissan doesnt know where its is

.............Im getting sick of walking / riding my bike to work

Can any of you guys tell me where the fuel pressure regulator is on this car so that I can let him know? Thanks for the help!!! Take care and N Joy the Hunt././Jimbo

[Jeremy airjer W]

According to the Nissan parts diagram its part of the fuel pump module.

[The_Duckslayer]

Thanks airjer... I really do appreciate all the info that I have learned from you over the years. Thank you for sharing your knowledge and expertise with all of us! Take care././Jimbo

[Jeremy airjer W]

Its more than just me. Not to mention without all of you asking the questions I would have anything to do.

So I say, thanks to everyone who asks, shares, and helps out in here!!!

[The_Duckslayer]

Its more than just me. Not to mention without all of you asking the questions I would have anything to do.

So I say, thanks to everyone who asks, shares, and helps out in here!!!

I understand that... just wanted ya to know that I appreciate the drawing that you posted. It will prolly help him out a lot. I have learned a lot of things here from a lot of people. Heck a couple times I chimed in with the answer when I knew it! Have a good one././Jimbo

[The_Duckslayer]

Well as it turns out it is not the fuel pressure regulator or a lot of other things. I got this from my son today... any of you guys have any idea? We are stumped! he is the story from him:

Pj Schmitz December 14 at 9:45pm

Long, long, long story short...

2002 Nissan Sentra SE-R Spec-V, 2.5 liter, 130K miles

Here is a list of parts I have replaced as new in the last 6 months

Fuel Pump / Canister assembly

Spark Plugs (OEM NGK)

MAF

CPS and CAM Sensor

New Air Filter

Checked all 4 coil pack with OHM meter. All passed

Compression test passed, although hydro carbon was found in the coolant. (Head gasket / head issue)

The car comes up with the "random cylinder misfire" check engine light.

The car acts like its misfiring. Sputtering at low speeds and all through the RPM range. Check engine light comes on, and at some points, FLASHES! If I turn the car off while coasting, and turn it back on, it (misfiring) will stop momentarily.

New issue today shows that the car only does it at low speeds. City driving, stop light to stop light, and UNDER 50MPH. I tested it several times. If I get on the highway, the sputtering and misfire stops and the engine runs smooth. When I exit and going below about 30MPH, it will sputter, misfire, and has loss of power.

Anyone, please chime in if you have any ideas as to what this may be. Anything at all

Thanks guys for all the help!!!! Take care and N Joy the Hunt././Jimbo

[Macgyver55]

Jimbo, I'd still be suspect of the coil packs. Coils can misfire under load and still check ok for ohms.

[Eric Wettschreck]

I had something very similar happen to my daughters car a while back. Coil packs ohm'd out good but were still misfiring.

[Jeremy airjer W]

What are the codes making the check engine light come on and flash?

I would guess that there is more than just a P0300 stored.

I agree that your symptom sounds like an ignition problem.

[The_Duckslayer]

Son is extreemly happy! It turned out to be a coil pack! Got 4 new ones in the thing now and some spares for future reference. Runs like a top! Thanks to all that offered suggestions it was a bear to find. At the end the coil pack failed completley rather than intermittently so it was easy for him do determine which one it was. Thanks again for all the tips! Take care and N Joy the Hunt././Jimbo