juan214
Full Access Members
Replaced my 5.4 L been running for over three weeks now no issues. Doing other repairs to the truck including re-soldering to fix odometer. Worked great for over two weeks then started jump around odometer still read OK then got worse back normal. Starting the engine at least once a day. Starting when I think battery may be dying out starts every time. Today the usual except that it cranks now but no start. It started ran then died out, second time same thing now it just cranks. The Odometer reads --------
1) No CEL not today or prior, OBD II Scanner shows no codes.
2) Checked crank sensor connection, and wires leading to it for wear (entire harness re-wrapped).
3) Checked fuel pump fuse even switched with another 30 Amp fuse. Checked every single fuse while I was at it, both under the hood and under the dash. All checked out fine.
4) Tested the fuel delivery system replaced Fuel Pump Relays twice and back to original relay still the same. Checked relay sockets for power. Constant power is there on terminal 30, ignition power is there on terminal 86 when ignition is turned on. Did the thumb test relay clicks when ignition is turned on. Checked Inertia switch it was not tripped for a reset. Banged on the fuel tank. Turned on the ignition to listen for click and whine from fuel pump from tank and fuel inlet seems to be working. Fuel pump replace around two years ago.
5) Injectors: All eight replace two days ago and truck was running then. Tested number one with NOID light (no light) today.
6) COP: All eight replaced.
7) Fuel pressure test: connected tester cranked no pressure. Checked connection restart still nothing.
8) PCM: I pulled the battery cables and discharge the system waited for over five minutes see in PCM resets. Still nothing.
If pressure fails I will Hot wired the Fuel Pump straight to the battery and see what we get. But it sounds like its working though.
Any other ideas anyone???
1) No CEL not today or prior, OBD II Scanner shows no codes.
2) Checked crank sensor connection, and wires leading to it for wear (entire harness re-wrapped).
3) Checked fuel pump fuse even switched with another 30 Amp fuse. Checked every single fuse while I was at it, both under the hood and under the dash. All checked out fine.
4) Tested the fuel delivery system replaced Fuel Pump Relays twice and back to original relay still the same. Checked relay sockets for power. Constant power is there on terminal 30, ignition power is there on terminal 86 when ignition is turned on. Did the thumb test relay clicks when ignition is turned on. Checked Inertia switch it was not tripped for a reset. Banged on the fuel tank. Turned on the ignition to listen for click and whine from fuel pump from tank and fuel inlet seems to be working. Fuel pump replace around two years ago.
5) Injectors: All eight replace two days ago and truck was running then. Tested number one with NOID light (no light) today.
6) COP: All eight replaced.
7) Fuel pressure test: connected tester cranked no pressure. Checked connection restart still nothing.
8) PCM: I pulled the battery cables and discharge the system waited for over five minutes see in PCM resets. Still nothing.
If pressure fails I will Hot wired the Fuel Pump straight to the battery and see what we get. But it sounds like its working though.
Any other ideas anyone???
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