I have a 2000 Thunderjet Alexis Classic that has a Redline marine engine. The engine is a Ford 5.8L H.O. MFI Using EEC-IV ignition with high and low pressure fuel pumps.
I have been experiencing the following problem with the fuel pump circuit. The 20amp circuit breaker trips when I go to start engine. This breaker does not trip every time I go to start, but at least 75% of the start-up attempts. Circuit breaker trips mostly on initial startup and after running for a while(1 hour or more) and shutting the engine off and then trying to restart.
I have been through the wiring harness double checking for ground and wiring problems(none found). I have also cleaned and double checked Ignition circuit and replaced relays and all appear and test good. Batteries are fully charged.
My concern is that I have an electric fuel pump /pumps that may be on the verge of complete failure due to ethanol related fuel problems. (water in fuel). The fuel system does have a fuel water separator that I change every year but can this e-fuel be such a problem that more frequent service is required.
My hope is that you guys on this forum with more engine experience than I can help answer the following question,
Can this water intrusion cause damage to a fuel pump that would require more amps to operate pump thus tripping the 20 amp circuit. (Intermittent failure)
I have connected code reader to engine and received code 96 in ECA memory. Fuel pump circuit open-BAT-to-relay
Is my theory just completely wacked or am I on the right track. I want to know if my next step is to replace the fuel pumps.
Thanks in advance for any help
I have been experiencing the following problem with the fuel pump circuit. The 20amp circuit breaker trips when I go to start engine. This breaker does not trip every time I go to start, but at least 75% of the start-up attempts. Circuit breaker trips mostly on initial startup and after running for a while(1 hour or more) and shutting the engine off and then trying to restart.
I have been through the wiring harness double checking for ground and wiring problems(none found). I have also cleaned and double checked Ignition circuit and replaced relays and all appear and test good. Batteries are fully charged.
My concern is that I have an electric fuel pump /pumps that may be on the verge of complete failure due to ethanol related fuel problems. (water in fuel). The fuel system does have a fuel water separator that I change every year but can this e-fuel be such a problem that more frequent service is required.
My hope is that you guys on this forum with more engine experience than I can help answer the following question,
Can this water intrusion cause damage to a fuel pump that would require more amps to operate pump thus tripping the 20 amp circuit. (Intermittent failure)
I have connected code reader to engine and received code 96 in ECA memory. Fuel pump circuit open-BAT-to-relay
Is my theory just completely wacked or am I on the right track. I want to know if my next step is to replace the fuel pumps.
Thanks in advance for any help
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