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It was a COP on the number 5 cylinder. It runs like a champ now. thanks to everyone

Ok thanks. I replaced IAC 6 months ago. It was acting up at 1/4 tank so i filled it up from different gas station and I still have same issue. i will get it tested this morning and keep u all posted. many thanks for your comments and help.

Ok, The "cop's" are $50 a piece and ford will diagnose for $80 so i think i will wait until then to replace the COP's or whatever else might be wrong. I don't have oscilliscope, but i do at UMKC. Let's go hypothetical in case someone does have oscilliscope. what should they look for on the...

No i mean the coil pack on the COP, to be more technical. That is a common failure for LS's also. thanks but i'm sure we all knew what i was talking about. I'm needing some ideas of what else to check.

Ok i just replaced the fuel pump (free- warranty) and it still has what i would call a miss but no codes. I recently changed the spark plugs and put dielectric grease in the coil pack tips.. I have no idea on how to check the PCm for proper operation. I beginning to believe i have a failed...

Ok i just checked the fuel rail pressure. It is 42 psi with key on and engine off. I put on the gauge and drove around with it. It sporadically jumped around between 27-31 psi and no vacuum. any ideas?? possibly a bad fuel injector?? It has died just running at idle around 5 times now. i...

I'll try to gently press the ring together to see of i can release the lines. If i can't get the lines to release my only option is to cut the fuel line to the pump and replace with proper fuel line hose and clamps. I just replaced the fuel pump about 4 months ago. The issue i"m having is...

Hi. I;m wanting to replace my 2000 ls 3.9L fuel pump. It has two ( red and white) quick disconnects on the white cap to the fuel tank. the tabs you press in are broke and missing, should i cut the lines on the inside of the tank and replace with fuel hose and hose clamps?? i tried to pry up...