fuel pump fuse not getting power?
Thread Starter
Senior Member
Joined: Sep 2005
Posts: 303
Likes: 75
From: s.f. bay area
s500 GL450 GL63 Z71XL Yukon 67 396 SS velle 68 Vert Camaro 69 RSSS Vert Camaro 75 Blazer
fuel pump fuse not getting power?
a question re fuel pump.
So, I get the P0335 CPS code and car dies while wife is driving it. I change the CPS but car still wont start.
I hook up a fuel pressure gauge to the fuel rail and I don't get a reading while cranking the motor. I hear a continuous hum near the rear of the motor. I don't know what it is and I've never heard it before.
I check fuses 30 and 53 and I get power to those. I do not get power to fuse #57. I don't know why there are 3 fuses for the fuel delivery. I think it might possibly be the pump or the filter and Im in the process of pulling the pump now if I can find it.
Can someone maybe give me some possibilities of what it might be?
So, I get the P0335 CPS code and car dies while wife is driving it. I change the CPS but car still wont start.
I hook up a fuel pressure gauge to the fuel rail and I don't get a reading while cranking the motor. I hear a continuous hum near the rear of the motor. I don't know what it is and I've never heard it before.
I check fuses 30 and 53 and I get power to those. I do not get power to fuse #57. I don't know why there are 3 fuses for the fuel delivery. I think it might possibly be the pump or the filter and Im in the process of pulling the pump now if I can find it.
Can someone maybe give me some possibilities of what it might be?
Thread Starter
Senior Member
Joined: Sep 2005
Posts: 303
Likes: 75
From: s.f. bay area
s500 GL450 GL63 Z71XL Yukon 67 396 SS velle 68 Vert Camaro 69 RSSS Vert Camaro 75 Blazer
I posted this about 4.5 years ago. It was a combination of my fuel pump and camshaft position sensor both failing at the same time. Timing chain was fine and still is after 270000 miles.
