Recent content by suchamoneypit

I had an automotive locksmith come out who was capable of reprogramming keys, ECUs, body modules, ect. We did full clears of all codes on both ECUs when testing.

I have a 2010 speed3 that won't start, been sitting for a while in my garage. I bought the car knowing it had an issue starting, got it started bypassing at the fuse box, and it died halfway home. It idled for around 5 minutes and drove for around 3-5 before it presumably immobilized itself...

Correct , I'm talking about the HPFP housing itself, not internals. Even the mazda dealer told me they dont see many of those pumps sold, but failure is possible.

What RPM range is this occurring in? For example, I had a similar issue, and it was <3000rpm. This would be the case if you were cruising on the highway and tried to accelerate. I had a similar issue resolved here For me, it was always <3000rpm, and the stuttering/hesitation perfectly matched...

Unfortunately since it took me ~3+ months to get this resolved I am well past the refund window for it. I only paid like $100 for it. Lesson learned, don't try and save money and be cheap on such an important component. I'll save it to scavenge certain (working) parts off in case I ever need them.

Update: Problem solved Before I tried this, I also started see fuel rail pressure drop to ~1400psi during WOT, this prompted me to start swapping around HPFP internals and housings. I got a working VCM II and Mazda IDS working, and followed the dealer steps to troubleshoot my P0089 CEL. The...

I actually picked up two separate fuel rail pressure sensors on top of the one in the car , and the issue persists when using all 3 sensors. I'm no expert either , but I don't think it's an o2 sensor , why would the car operate fine above 3000rpm everytime ? I think it would be weird for the o2...

I did. I tried two different HPFP housings, each with CS internals and Autotech internals (so 4 different setups tested). Autotech internals were confirmed working and in my car previously. CS were brand new.

So this adventure has continued, my car still has the hesitation/stuttering and with P0089. I may make a new post, but my car still stutters and I have done the following: -replaced spill valve (off ebay good condition used HPFP) -replaced fuel relief valve (brand new) -replaced fuel rail...

I only disconnected some PCV lines, and my intake, so it should be pretty isolated to the HPFP housing (and even then, I replaced the fuel relief valve). I wouldn't think a problem like this would be a problem at the fuel tank level like the in-take fuel pump, I haven't replaced anything there...

EDIT: Problem solved, both my HPFP housings were bad. New HPFP housing solved the problem. More detailed explanation in a response posted below. Hey everyone, been pulling my hair on this one. Here's the scenario. Car is running fine (2011 speed3), for 1.5 years. I buy brand new Corksport HPFP...