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Not your usual HPFP issue. Or is it?

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Old 05-15-2015 | 10:53 PM
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StanThePorscheFan's Avatar
StanThePorscheFan
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Default Not your usual HPFP issue. Or is it?

My '11 CS is 3 months out of warranty and this happens:
Three days ago I experienced sudden loss of power, engine light on, PSM failure light on, engine shaking and vibrating badly, long crank on restart, etc.... All the usual signs if HPFP failure.
Today I replaced the sucker just to find out that was not the problem. I still have all the same symptoms.
I searched RL, Pelican and the net and did not find any answers.
Any idea what it might be?

Thanks in advance

Stan
Old 05-16-2015 | 10:27 AM
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Did you check codes before replacing parts?
Old 05-18-2015 | 12:19 AM
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Originally Posted by ubermich
Did you check codes before replacing parts?
I did not. Will check on Tue. Was 100% sure its the pump.
Old 05-22-2015 | 04:39 PM
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Mine is in the shop right now. Had PSM Failure..workshop come on several times the past couple weeks. Finally my CTT shut down and engine light came on as I coasted into our driveway. Started it back up and it just started revving to about 4000rpm and back down. Flat bedded to dealership and awaiting diagnostics.
Old 09-16-2015 | 05:41 AM
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Default HPFP

What ended up being the problem?
Originally Posted by StanThePorscheFan
My '11 CS is 3 months out of warranty and this happens:
Three days ago I experienced sudden loss of power, engine light on, PSM failure light on, engine shaking and vibrating badly, long crank on restart, etc.... All the usual signs if HPFP failure.
Today I replaced the sucker just to find out that was not the problem. I still have all the same symptoms.
I searched RL, Pelican and the net and did not find any answers.
Any idea what it might be?

Thanks in advance

Stan



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