Why is there no power to the fuel pump?
Confirming power to the fuel pump (with a multimeter) also verifies that the fuel pump has failed and needs to be replaced. If no voltage is present, as your helper cranks the engine, then the cause of no fuel condition is due to either a bad fuse, fuel pump relay.
How to know if your engine has no spark?
First Confirm Your Engine Has No Spark. 1 Disable the fuel system by removing the fuel pump fuse or relay. 2 Insert a spark plug tester into the plug boot and ground it on a piece of metal on the engine. 3 Finally, Have someone crank the engine and watch for spark.
What to do if there is no spark or fuel?
If there is no spark or fuel, then the first thing I would do is check the vehicle’s fuses and relays, particularly the EFI main and ignition relays. It may be possible that one of these components has failed and is cutting off power to the vehicle’s ignition and fuel systems.
What makes an engine not start or run?
All engines require three things to start and run: spark, fuel and compression. If any one of these is missing, your engine will not start. The fuel pump is running and delivering normal pressure to the engine
The leaking cooling system is not causing BHG unless engine is allowed to overheat. Not sure about 5sfe, but on 3sfe the drive pin is 5mm and is made of hardened steel. I can speculate that on your car someone broke half of it before and installed cam pulley without replacement of the pin.
How can I check the power of the fuel pump?
To check for power at the fuel pump, you need to be cranking the engine (probably a bad idea), have the key in the “On” position while holding the door to the AFM open (air flow meter, on the top of the air box), or by putting a jumper between B+ and Fp in the diagnostics connector.
Where is the fuel pump relay on a Toyota?
The relay you are talking about is called the “Circuit Opening Relay” and is located on top of the ECU, which is between the driver and passenger footwell behind the radio. You can get to it by pulling back the front inner corner of the passenger carpet.
When to connect the B + Terminal to the fuel pump?
The B+ terminal in the diagnostic connector should only have power when the key is in the ‘On’ position. Also, the fuel pump will only receive power (when B+ and Fp are not connected) when the key is in the Start position or the AFM flapper door is open (air is flowing into the engine).
Ignition switch would explain no power when the key is turned but not why theres no power at the fuse box. Also installed a new fuel pump after it wouldn’t start (was pretty certain it was going to be the issue) but still no go.
What to do if your Jetta won’t start?
If it’s cold and you have a 2009-2012 Jetta CLICK HERE for information. This is by no means a comprehensive list of problems, just some of the most common. Use common sense when doing any testing and be sure that you won’t get run over if the car suddenly and unexpectedly springs to life.
How does a diesel engine start a TDI?
The basics. First, here is a post with much of the basics of the diesel engine. For the TDI to start, electrical power needs to flow from the battery through fuses and relays to the key switch and ECU.
Where is the ground wire on a fuel pump?
There is a brown wire ground wire at the bottom right of the fuel pump relay socket that tends to push back instead of connect when inserting the relay. Reaching behind the relay box will indicate whether the spade connector has pushed back or not.