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Nothing abnormal when taking of or downshifting. Just when up shifting normally at like 2000 rpms

2008 speed3. is there any remedy for the bucking when releasing the clutch at low rpm under normal driving condition. its almost embarrasing. seems like its loaded up with fuel or something?

i had the same problem with a cel light for fuel rail pressure sensor voltage low. replaced the sensor with another 140 bar sensor and fixed the issue

One another thought, i read on a thread while searching for help with fuel pressure about getting rid of the annoying load up of fuel or the rough engaging in gear while shifting between gears... i cant find that thread again. does anyone know what Im talking about? I know Im not good at...

I'll get some new plugs this week and put them in in and order hpfp internals. Thanks for the help. Much appreciated.

Ok. So just for some info. If you plug in the fuel pressure sensor upside down" and it will plug in" you will get that code. New 140bar sensor and I'm getting 1700 or 1800 and some psi wot. Little backfires here and there driving. No cats. Maybe plugs will fix that

Installed the new fuel rail pressure sensor 140bar from finjector. Now I get a p2122 code saying accelerator pedal ckt low voltage and the car barely idles my ap will not clear the code. Any and all help appreciated.

On my ap cold car koeo it's holding 131 psi on hpfp guage

Iam not with the car now. I'll have to take a look when I get home on the 3rd. I'm new ro the ap also. Is there a way to read the pressure from the itp on the ap? And yes brand new oem prv

The car was warm , but being that it took like 15 mins to get to where it did and it was like 25 degrees it was pretty cooled down at that point. Also thanks for all the help given thus far. I'm about to go on vacation so I guess it'll be a week before I can mess with it again.

Is there a reason no1 will answer me now?

Ok. I got the spill valve broken down cleaned and out back in the car. Still doing the same thing. Did the prv test again and the pressure only goes up to 1305. Took forever in that time the car cooled down almost. I put a new prv in it before.

i dont really see how a low battery could cause only the hpfp to act up and nothing else. i know some wierd things could happen but..... is this even possible?

The ground is good. Looks good. I'll hit it with multimeter tomorrow maybe to be sure. Would a low battery case these issues?

Put it all back together. Didn't make a wot "pull", but I cruised around a little. About 2 miles. Car is just as it was before I pulled the pump. Low rpms wot fuel pressure in the 12-1300 psi range. Also just took notice that the lights dim and get brighter when o turn the heat on and off...

i was able to get the spill valve off the pump. just couldnt get it apart to get to the internal oring and all to clean it.

i tried everything to get it apart. pumps mounted again. ill try with it in the car and see if i can get it apart. yup thats the sensor. guess ill also be looking for a donor harness..

installed the corksport o ring kit last night. well as much of it as possible and cleaned everything as i went. couldnt get the spill valve torn apart. it has stock internals i will replace with corksport internals when i get it back to running correctly. i have not gotten it all put back...

Ok so I babies it to work the past 2 days. It seems like it's loading up." With fuel". When I hit the clutch to shift at like 2300 rpms the fuel pressure is at like 1230 and it does not drop while granny shifting and is a very rough ride.. "jumps when letting out on the clutch" I ordered the...

Yea I was telling my wife that. I'll have to make an adapter to do this I guess? There are no tuner shops near me.