Skip the auto shop - Our mechanics make house calls

Q: Can't start, hot relays

asked by on

About two months ago, my vehicle wouldn't start. Or it might start, but then run a while and die. Three different mechanics told me it would be the fuel pump, but I couldn't afford to replace it at the time, so I decided to wait. One of my friends took a look, though, and noticed the fuel pump relay was hot, and replaced it for me. For two months since, my car has started just fine. Recently, though, the problem started again. I replaced the relay, and that did the trick again for the time being. Would a bad fuel pump cause my relay to run hot? Is it a reasonable bet that if I replace the fuel pump, I won't be wasting money?

It could be that the fuel pump is worn and drawing enough current to get the relay hot, causing it to fail. Fuel pump failure is quite common on vehicles such as yours, so if three mechanics have told you the pump is bad, it probably is. I suggest having a trained professional inspect your vehicle and replace the fuel pump if needed.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. Can't start, hot relays

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

Get a quote

What others are asking

Q: Car won't start, engine ticking

Hello. It sounds like the battery is weak and does not have enough power to start the car. Even though the lights come on in the dashboard, it does not mean that there are enough volts for the battery to...

Q: Car starts but runs uneven, ignition module and coils replaced, battery fairly new

Hello, thanks for writing in about your 2003 Pontiac Bonneville. Make sure all of the connections the the ignition module are tight. If one of the wires are loose you will have a rough running engine. I'm sure its something...

Q: I have a 98 Blazer (4x4); it will not start unless I smack/hit the gas tank. Already replaced fuel filter.

Hey there, thanks for writing in about your 1998 Chevrolet Blazer. It sounds like you may have a problem with the fuel pump. Sometimes when they wear out, they develop a dead spot. By hitting the tank, it jolts the...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...