| Re: Smoke under hood poof fuel pump stops working |
Subject: Re: Smoke under hood poof fuel pump stops working by Schrade on 2016/8/8 18:35:28 NO pressure? There should have been some residual fuel pressure. Pumps don't usually fail while running. Whatever test you do for pump, don't hold the connection for longer than 2 seconds - it will cook in short order. For relay test (ONLY relay, not pump itself (and you will need FSM to ID the 4 leads): IF FP Relay is like cooling fan relays, test for INCOMING 12V to relay. Then test 12V ground. Then put in a paperclip to close THAT circuit. Then test the other 2 sockets for continuity. Here's a schematic for CF Relays - never mind my notes - I didn't know what I was doin' (still don't most times). You'll need to determine which circuit is 'master' circuit (D-F), and which is 'slave' circuit (A-E). |
