Starts then dies

I have a 2010 Tacoma 4.0. Yesterday it died in my driveway. Upon restart it dies after 2-3 seconds.

I unplugged the fuel pump resistor and crossed it out with wire and it seemed to run fine. Now I am trying to narrow down if it is the resistor or fuel pump.

I have put the multimeter on the resistor and the attached pic is the reading I get on the 2000 setting. I’m wondering is this the correct setting on the multimeter? If so this should indicate a faulty resistor correct?

thank you for any help

 

Here is how you check it. Note that the normal resistance is between 0.70 ohms and 0.760 ohms at 68 degree F.
2000 is too high you will probably need a better meter to get a reliable reading.

If it runs fine with the resistor shorted it tells me it is defective.

You would probably be fine running with the resistor shorted and the pump running full speed all the time until you can get a replacement resistor.

 

thank you for the response. I think this is the culprit as well just wanted to confirm before getting the part. On the “200” setting I don’t get a reading so I am thinking it’s defective.

any insight on best place to get a replacement? Cost wise

 

Here is the Part Number: 23080-31010 Fuel Pump Resistor.

Every place I looked it was between $ 60 and $ 70 dollars....

 

Just went through this myself (last week). since the truck does start, your fuel pump is very very likely A-OK.


the resistor is needed to get the fuel pump to operate in "Low" mode, basically what's needed at idle.

Test your fuel pump if you wish...., fire up the truck, before it dies, give it a boot full of throttle pedal. Aim for 3,000rpm, it will tell the ECU you need "High pressure", and bypass the fuel pump resistor circuit. As soon as you let off the throttle, truck will die.

I paid $204 after tax from the local dealership

 

Awesome! Great idea. I will def try that! I figure I will have to hit the dealer as well, not sure this is something generic parts stores will carry and I need the truck asap lol

 

I would also like to add, I’ve been having a mid throttle stumble when you get in between 2/3k rpm. Low throttle good, WOT good. Could this too be a result of the resistor?

 

You can also check the fuel pressure regulator.

 

Theoretically yes. If your resistor failed internally, then yes it makes sense that the resistance went too high, causing the fuel pump to run too slow. It Could make that transition (when ECU activates the FPR) to be less than seamless, resulting in a stumble that you feel.
Practically speaking, can't say for certain. Good luck, hope the Resistor solves both your concerns

 

Let’s hope so, new resistor going in tomorrow!