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Cars > Crazyfast79TA’s Garage > Blog > Not The $300 Fuel Pump!

 

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Crazyfast79TA

M –47
Bovey, Minnesota
United States

 

Crazyfast79TA’s Blog Posts 1 – 5 of 227

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Not The $300 Fuel Pump!

By Crazyfast79TA

Monday Michelle stopped by work about lunch time so Amy could print off something she needed for her Red Box route. When she got ready to leave, her Sport Trac wouldn't start. Dustyn plugged in the Mac scan tool to trace down the problem. The fuel pressure was too low or none at all. Inertia switch kicked? No. Fuel pump fuse blown? No. Power to fuel pump out of inertia switch? Yes. Fuel pump runs with key switched on? No. Bad fuel pump. Called O'reilly Auto to check for price and availability. Next day for $293 with Dustyn's employee discount. Okay. Didn't have the extra cash (do I ever have $300 extra?) but shuffled money in the bank accounts to come up with it. Tuesday we had a funeral to go to, but picked up the pump after that. Went to the shop and worked on changing it. Got it installed by 5:00. Still no fuel pressure. Dammit! Started tracing down wires further than before. Found out somebody had been there before. Let's just say it wasn't a virgin. Hacked and spliced in several places. There were wires comimg from the fuel pump to a control module on the crossmember above the spare tire. Without a wiring diagram, we didn't know what it was or how to check it. Tried looking up a wiring diagram online and in the books at the shop. Not much luck. We gave up about 11:15. Wednesday after work we pulled it in the shop and got it up on the hoist and pulled the tank back out. Started pulling the harness out. Got it out from the tail lights to where it goes up through the floor. Yes, it's all one harness. Things were all connected together. It's a wonder we didn't have to diconnect the horns and head lights, too! Damn, what a mess! I was too worn out Thursday to even try working on it. I came home and tried looking things up online. Found out what the control module on the rear crossmember is. It's a fuel pump driver module. Often times misdiagnosed as faulty fuel pump. The wires that ran from the pump to that were the ones that were hacked up the most. The yellow/green stripe wire was corroded. The white/brown stripe wire was hacked off. A blue wire was spliced in and ran outside the conduit. There was a bare wire run along side those two wires covered with corrosion and the three wires wrapped in a foilized scotch tape. The bare wire wasn't connected to anything on the fuel pump end. Couldn't find it anywhere else in the harness. No pulled off or corroded off terminals anywhere to be found. Left me scatching my head. Today when I got off work and went to the bank to cash my check, I stopped by the Ford dealer and had them copy the page from the service manual with the wiring diagram for the fuel curcuit. The bare wire is supposed to be bare. The foilized tape is a shielding tape (not available anywhere in town) and the fuel pump is special order (even though it's used on multiple vehicles). It only costs $149. We are going to Duluth tomorrow for Michelle and Tammy to celebrate their birthdays at Red Lobster. Sunday we have church in the morning. The shop is full of dump truck and paper mill projects, so I couldn't get the Sport Trac in anyway. Maybe Monday after work. This thing is killing me!

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Cars > Crazyfast79TA’s Garage > Blog > Not The $300 Fuel Pump!

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