How to tell if hpfp is failing?

[Grinchxvx]

Last week my car was throwing me into limp mode and running really bad with both my tune on and off with the codes 2cab 2ca7 which are o2 codes and also some 3100 and 30ff ones. Come this weekend it started running fine again and I cleared codes and its back to normal with just the d0wnpipe codes present. I did some logs and last week the hpfp dipped as low as 7-8 but now it's fine and doesn't go lower than a 10. Do these things go out intermittently? My car already had the recall done in 2009 but that was 5 years ago.

[mike@x-ph.com]

More often than not, the fuel pump will start showing signs of weakness rather than just fail.
It will start getting worse and then fail completely
I recommend you take it to the mechanic and test it.

[Grinchxvx]

Originally Posted by mike@x-ph.com

More often than not, the fuel pump will start showing signs of weakness rather than just fail.
It will start getting worse and then fail completely
I recommend you take it to the mechanic and test it.

It's going into the dealership Thursday that's kind of why I posted it now but if it's not the hpfp I have to pay 120
Bucks for the diag and then I can go from there. maybe a fuel injector? My car stutters on cold starts too

[Grinchxvx]

Update, turns out it was O2 sensors hpfp still going strong!