Q: Crank, No Start, replaced fuel and relay.

asked by on July 15, 2016

My truck shut off on me as I was driving, after it died I turned the key and it cranks over but does not start, so I figured it wasn't the battery or alternator. I only pulled one plug wire off and tested it and I have spark. I then did everything imaginable to test the pump and relay. It came out to be the pump. I replace the pump and filter and still no fuel and the pump doesn't even come on. I get a relay and still nothing. I then tested to see if I was getting power to the pump, at the harness coming out of the tank I put a meter on those wires and I'm only getting 8 volts so I use a 12 volt battery with leads to jump the pump and it comes on but no gas come out of the line. I'm lost.

My car has 200000 miles.
My car has an automatic transmission.

When you applied power to test the pump directly, you may have had the power and ground backwards, and ran the pump backwards.

The pump connector that is only getting 8 volts should be replaced. The connectors are known to have a problem with voltage loss through the connectors due to corrosion. Replace the connector and it should fix your problem. Do not insert your big tester pin into the new connector or you may damage the female connector.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing


Experienced Mechanic?

Earn up to $70/hr

What others are asking

Runs fine but doesn’t accelerate after I step on the break

Hi Dagoberto. Thanks for contacting us tonight. Sometimes issues like you've described are caused by a worn out torque converter, while in some instances, it's as simple as dirty transmission fluid or an inner seal leak. It can also be...

2004 Nissan Xterra how much would it cost me to replace the fuse box engine 3.3 liter, speaking in mechanics installation wage?

Claimed by Robert Tomashek

Rough idle and Misfire

Engine misfires can be caused by many different problems and are generally caused by either a spark or fuel issue or in some cases, a combination of both. Spark related problems generally will result from things like ignition coils, crankshaft...

Cars light and everything turns on but won't start and no nose

Be sure not to remove the battery cables if and once the vehicle is running. Removal of the battery from the circuit at that time can cause a voltage excursion which will damage the PCM (powertrain control module or "vehicle...

Oil pan covered in oil, but no dripping

If your oil pan is covered in oil, that means you have an active oil leak that may be coming from higher up on the engine. The valve cover gaskets may be leaking and running down to the oil pan....

Related articles

Why Fuel Pump Replacements Can Be Tricky
Changing the fuel pump can be challenging, as you may first need to remove the fuel tank and other parts in the car to reach the pump.
The Best Used Cars to Buy for Senior Citizens
Everyone Everyone needs a way to get around. You need to get groceries, get to doctors’ appointments, visit with family and more. However, senior citizens have very different needs when it comes to buying a used car than other demographics....
A Buyer’s Guide to the 2012 Chevrolet Captiva Sport
The The 2012 Chevrolet Captiva Sport is a brand new vehicle and is an eco-conscious crossover SUV for the environmentally friend consumer. It comes standard with many features, but also has many available options so it can suit any buyer’s...