Alright guys and gals,

i have a 2007 r56 MCS. Recently, if you look at my other started treads you will see, that I have been having issues with starting my mini up in the mornings.

My local Mini-specialist shop said that it was most likely the HPFP. I consider myself mechanically inclined, so I bought the HPFP and installed it myself. Everything went smoothly, I had no problems with the install at all. When I went to start it up after clearin the codes, BAM the half engine power light came on.

Also, keep in mind that it started up first try after sitting for 2 weeks, it never did that until I replaced the HPFP. The car idles perfectly, nothing sounds or acts funny.

Does anyone know what this could possibly be??? All suggestions are appreciated!

Thanks!
Tyler

 

Correction, just drove it around the block. It's definitely experiencing a lack of power but WHY?? There's no fuel leaks, i triple checked. Recently changed the spark plugs as well.

 

Any codes? Is it misfiring? When did you change coils last?

 

No CELs and no codes at all. Before I changed the pump out I had misfire codes and the car would idle really rough. Now it idles fine but while driving only half power. I haven't change the coil's in a long time they probably need to be changed, but at the same time it would be weird for a coil to be bad without misfire codes.

Thanks for for the reply btw

 

how is it when you are on boost? another thing to consider is the bypass valve on the turbo. if the diaphragm is torn that would cause issues. from what i've read, however, you need a replacement on hand if you plan to check it since it needs to be replaced if the diaphragm is broken and you can't just put the old one back in.

 

I don't know where the diaphragm is, is there a drawing somewhere I could look at? If it's a simple fix than I'm willing to do it! I just want my mini fixed!

 

http://www.jscspeed.com/images/catal...ndary/2260.jpg

this is a picture of an aftermarket replacement, its the part with the 3 screws. you can just get an oem part and replace it, it has an electrical connector. you can do it with allen wrenches in your garage with a little patience.

 

also see this thread for the new part number

https://www.northamericanmotoring.co...e-upgrade.html

 

awesome! Yeah I mean since the car is in limp mode there is pretty much no boost. Ive never heard of the diaphragm before, is it a common issue? I already spent $1000 on a fuel pump so I'm a little scared to just keep throwing money at it unless I know what's wrong with it.

 

Since there are no codes, is there any way to figure out if the DV is toast without taking it off?

 

Help me save it!!

 

it's a common issue, so much so that there is a new factory part that does not have a diaphragm. it's $65 so i'd just change it out, there won't necessarily be a code thrown if it is broken. last thing to do is change all 4 coils.

 

Ok thanks again for the advice! I'm gonna go ahead and replace the DV. I'll report back when I've done that.

 

confirm that your HPFP is plugged correctly. also, since you did the work yourself, check the little hoses going to the vacuum pump and the turbo.

i once for got the little hose going to the turbo and it took me a while to discover the issue...lol but i noticed when i rev the car i dont hear the waste gate.

 

thanks for the reply! Yeah I've had the hose thing happen before to me as well, that's the first thing I checked. They're connected both front and back. I double checked the connections for the fuel lines and electric plug for fuel pump and theyre all connected. I don't smell any fuel at all so I know they aren't leaking. Is there somethin I could have missed while plugging it in??

thanks

 

mmm...if this is the only thing your car is exhibiting, i would drive it for a bit and then scan it for codes.

when you rev the car, do you hear the turbo spooling?

where you located by the way?

 

I'll take it on a quick drive after work today and see, but when I drove it around the block I don't recall hearing any turbo spool, but I wasn't really listening for it.

Im in Maryland!

 

I'm curious as to what you find. I get the reduced power light after heavy throttle... doesn't appear to have any other issues. No codes for me either, it just seems to take away all the boost. Frustrated it detects a fault but wont share with me what it is.

 

yeah it sure is weird. I'm just waiting for my parts to arrive from ECS Tuning (they're great btw I highly recommend them for their prices, customer service, and speed of shipping). I bought a diverter valve and all four coils to replace. We will see if it helps after installing them.

 

UPDATE :

The new coils arrived along with the Diverter Valve. I installed both of them but THE LIGHT IS STILL ON. I'm at a loss here guys I'm so close to just giving up.....if anyone could chime in with some ideas that'd be great!
I wanna save it!

 

also, I want to let you know that the waste gate is working. The blow off valve still went off, pretty loudly, after heavy throttle. I checked all the hoses again while I did the DV and coils.

 

wow, i wonder if it's the LPFP in the tank then.

 

I'm starting to think that as well.....this car is way too expensive for me

 

Did you scope the valves for carbon buildup yet as suggested on 6/19. That will cause misfires like crazy and driveability issues you describe.

 

I haven't scoped the valves yet, would I need to change the intake manifold gasket when I do? Wouldn't the misfires be showing as readable codes? I've read misfire codes in the past, but at the moment I'm still showing up 0 codes