![]() ![]() Here’s a great video from ChrisFix on how to diagnose and replace a fuel pump: Here’s more on diagnosing a bad fuel pump. Before even doing that, you can listen for the hum of a fuel pump before you even turn the key. In order to test the fuel pump, you’ll need to test the fuel pressure. If the fuel pump has gone bad it will no longer be able to send enough fuel to the fuel rail to properly pressurize it and P0087 will be triggered. Here’s more on diagnosing a bad fuel filter in your Tacoma. The only difference is that the fuel pressure between it and the fuel pump will be normal, while the fuel pressure between the filter and fuel rail will be lower than normal operating specs. If it is past this window in mileage, it would be wise to replace it anyway.Ī clogged fuel filter will give all the same symptoms of a bad fuel pump. It only takes a second to look.Ĭheck to see the maintenance window that Toyota has set for your particular model year Tacoma. This could lead to low fuel pressure at all times, or when the tank is low, but not out. A good dent is enough to dislodge the sender and pump. This is more of a probably not, but check the fuel tank to make sure that it hasn’t taken a hit that would damage it on the bottom. That gives the fuel enough time to leak out, without all of the other smells overpowering it. The best way to smell for a leak is to start the vehicle cold and shut it down after a minute. If you smell raw fuel at all, that can indicate a leak. This is often caused by road debris, or even bad jack placement.Īlso, make sure to take some good sniffs. If they are going to be crimped (therefore impeding the flow of fuel) it’ll most likely be under the vehicle where it happened. Get a good flashlight and trace the fuel lines from your Tacoma’s fuel rail all the way to the gas tank. If it is echoey and hollow sounding, there may be no fuel in there for whatever reason. It should register a thud sound with no echo. This may sound like nonsense, but I’ve seen it enough to put it on the list. If it is no longer going all the way to the “E” mark, you may just be out of gas. Sometimes a fuel gauge can go just bad enough to get a person in trouble. P0087 is usually the fuel pressure sensor doing its job and telling you that there is something wrong with the fuel pressure. Typically when the fuel pressure sensor goes bad, it’ll trigger either P0191 or P0190. If there isn’t enough pressure, you could have an issue with the pump, or something is obstructing the fuel’s journey to the rail.Ī bad fuel pressure sensor should not be accompanied by any symptoms other than the check engine light. If the fuel pressure is ok, you probably have a bad fuel pressure sensor (or the fuel pump has a bad wiring connection). ![]() You’ll need to look up the fuel pressure specs for your engine and model year. Here are the most common causes of OBDII P0087.īefore doing anything, check to see if your Tacoma has a fuel pressure test port at the fuel rail or in the fuel line. It may not even be very noticeable, it just depends on the fuel pressure. Poor Fuel Mileage– Fuel mileage will suffer with low fuel pressure do to the air/fuel mixture being off.The engine will typically run rough or feel choppy when it is misfiring. As long as you fix the lack of fuel pressure, the misfire should take care of itself. If it is misfiring, you’ll likely get P0300 (random misfire, all cylinders) along with the P0087 that brought you here. Misfire– Without enough fuel pressure, your Tacoma is likely to misfire.It usually feels like it falls flat on its face, or just runs out of go. The most common ones are running at highway speeds and hard acceleration. This happens in situations where you need a lot of fuel pressure. Low Power– If the fuel pressure is too low, it will not allow the vehicle to operate above a certain performance threshold.Here are the most common symptoms of P0087 that you may be experiencing in your Tacoma. How bad those issues are going to be depends on whether the fuel pressure is staying consistently low, or if it’s fluctuating in and out of normal operating range. If your Tacoma is experiencing P0087, it is almost always going to be accompanied by drivability issues. This means that the fuel pump adjusts the pressure going to the fuel rail based on the demands of the vehicle, therefore eliminating the need for a return line. #TACOMA 3.4 FUEL PRESSURE TEST CODE#This code is most common on vehicles that use a returnless fuel system. It’s generic, which means that it has the same meaning for the Toyota Tacoma as it would any other vehicle. This code indicates that there is an issue with getting enough fuel pressure to the fuel rails. P0087 is a relatively common OBD II trouble code. ![]()
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