Close
True or not true
1999 Chevrolet Monte Carlo

True or not true

(1999 Chevrolet Monte Carlo)
Car makes a whining noise. Was told Fuel pump is going out. Is that true?
3 answers & 0 comments
Popular Answer
Totally agree with ProChevy. Plugging in a scan tool to see fuel trim figures, physically checking fuel pressure and delivery, and checking fuel pump amperage draw and or oscilloscope pattern are the preferred tests on a fuel pump to decide on its serviceability.
Sign in to reply
General Diagnosis
$88 - $111 Learn More
Totally agree with ProChevy. Plugging in a scan tool to see fuel trim figures, physically checking fuel pressure and delivery, and checking fuel pump amperage draw and or oscilloscope pattern are the preferred tests on a fuel pump to decide on its serviceability.
Sign in to reply
on August 26, 2009
Well it could be the pump but without hearing it's impossible to know. Suggest you have someone knowledgeable check it out.
Sign in to reply
My 99 Monte was doing the same thing. Start by changing the fuel filter. I changed mine and the whining went away. I also put a good fuel injector cleaner in on a full tank. Good luck
Sign in to reply

Similar Questions

View answers to similar questions from RepairPal's community of auto experts and enthusiasts.
Headlights flash while driving hear clicking noise coming threw the vents while idle the heater goes on and off also...
When trying to start my 2012 kia sorento sx it acts like low battery so jumped it off it started so i get a new...