Blowing fuel pump fuse
- Thread starter Fang
- Start date
Per instructions - "30 amp fuse to replace the stock 20 amp fuse in the underhood fuse box"
Did you do that?
Did you do that?
2011 Sterling Grey VMP Gen II blower w/2.4 pulley, ATI 15% lower, NGK Iridium TR7IX, VMP boost a pump, 56# injectors, JLT 127 Carbon Fiber, VMP dual 67mm throttle body, JLT catch cans, VMP triple pass HE, Reische 170 degree thermostat, Ngauge tuner (Tuned by VMP). Kooks long tubes with Kooks green cats, Big Daddy O2 extenders, Borla Supersnake sport axle backs
Yes
Check your fuel circuitry wiring around the FPDMs as well as the FPDMs itself. Relays ect.
You may need a wiring upgrade.
Contact VMP
Sent from my SM-N986U1 using Tapatalk
Sent from my SM-N986U1 using Tapatalk
1. Excessive amperage drawing
The first step is to find out if the fuel pump is the only device on the circuit. If not, you will have to check every device found on this fused circuit and identify the one drawing excessive amperage.
If you are not familiar with this, finding a wiring diagram for your make and model is easiest.
After monitoring the pump’s current draw, you will need to find out the specified limits given by the manufacturer. If the fuel pump is drawing excessive amperage, it can mean a higher load than normal on the pump.
This can indicate a restriction in the fuel delivery line, which a specialist should further investigate. This can range from a clogged filter to other restrictions in the fuel delivery line, putting pressure on the pump.
2. Wiring harness problem
If you have measured the current draw of the fuel pump and you can match it within limits provided by the manufacturer, you most likely have a wiring issue.An easy method to test this without spending hours meticulously going over the entire circuit is to bypass it.
You literally try to create an alternative circuit, in this case, re-wiring the fuel pump. After you finish, ensure that everything is set up correctly and give the car a try.
If everything works as normal, then your problem is the wiring circuit.
The solution to this is to replace your fuel pump wiring circuit.
(or check these connectors and make sure there secure and the pins are making good contact C4331 (FUEL PUMP (FP) MODULE) , C4033 (FUEL PUMP CONTROL MODULE) , C4336 (FUEL PUMP CONTROL MODULE 2)
3. Bad fuel pump relay
While not very common, a bad fuel pump relay can cause your fuel pump fuse to blow out. To test this, you will need to have a multimeter.- Locate your relay and pull it out.
- Give the prongs a good clean, ideally using a wire brush
- Check out the relay for a diagram, which will tell you what prongs to connect the power and multimeter to.
- If you have not done so already, set your multimeter to ohm setting.
- Use jumper wires to connect the relay terminals to the battery of your car. At this stage is important to listen for a clicking sound, which indicates if the relay is still functioning.
- Connect your multimeter probes to the remaining 2 prongs on the relay.
- Now you should be able to see if there is any resistance in the relay. A reading of 0 or close to 0 (e.g. 0.001 – 0.003) will confirm there is no resistance, while anything bigger will tell that you have a faulty fuel pump relay.
Lightning Fast
Electrical Automotive RepairPM Me or [email protected]
Website:https: Lightning Fast Electrical Automotive Repair LLC
Remote or Local (On Site) Technical Repair
Wow, that's a lot of info. Thanks for taking the time to post that.1. Excessive amperage drawing
The first step is to find out if the fuel pump is the only device on the circuit. If not, you will have to check every device found on this fused circuit and identify the one drawing excessive amperage.
If you are not familiar with this, finding a wiring diagram for your make and model is easiest.
After monitoring the pump’s current draw, you will need to find out the specified limits given by the manufacturer. If the fuel pump is drawing excessive amperage, it can mean a higher load than normal on the pump.
This can indicate a restriction in the fuel delivery line, which a specialist should further investigate. This can range from a clogged filter to other restrictions in the fuel delivery line, putting pressure on the pump.
2. Wiring harness problem
If you have measured the current draw of the fuel pump and you can match it within limits provided by the manufacturer, you most likely have a wiring issue.
An easy method to test this without spending hours meticulously going over the entire circuit is to bypass it.
You literally try to create an alternative circuit, in this case, re-wiring the fuel pump. After you finish, ensure that everything is set up correctly and give the car a try.
If everything works as normal, then your problem is the wiring circuit.
The solution to this is to replace your fuel pump wiring circuit.
(or check these connectors and make sure there secure and the pins are making good contact C4331 (FUEL PUMP (FP) MODULE) , C4033 (FUEL PUMP CONTROL MODULE) , C4336 (FUEL PUMP CONTROL MODULE 2)
3. Bad fuel pump relay
While not very common, a bad fuel pump relay can cause your fuel pump fuse to blow out. To test this, you will need to have a multimeter.
The obvious solution to this is to get a new fuel pump replay.
- Locate your relay and pull it out.
- Give the prongs a good clean, ideally using a wire brush
- Check out the relay for a diagram, which will tell you what prongs to connect the power and multimeter to.
- If you have not done so already, set your multimeter to ohm setting.
- Use jumper wires to connect the relay terminals to the battery of your car. At this stage is important to listen for a clicking sound, which indicates if the relay is still functioning.
- Connect your multimeter probes to the remaining 2 prongs on the relay.
- Now you should be able to see if there is any resistance in the relay. A reading of 0 or close to 0 (e.g. 0.001 – 0.003) will confirm there is no resistance, while anything bigger will tell that you have a faulty fuel pump relay.
Lightning Fast
PM Me or [email protected]
Website:https: Lightning Fast Electrical Automotive Repair LLC
Remote or Local (On Site) Technical Repair
I forgot to mention @Fang if you discover there is wiring or harness issue check this company out if you need help with making or repairing fuel pump harness.
racecarservices.com
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