Electricity to fuel pump keeps getting cut off

Asked by Oct 20, 2012 at 12:50 PM about the 1979 Chevrolet Monza

Question type: Maintenance & Repair

Will drive car and at times it suddenly stops pumping fuel to carbuerator, wait about half hour and retry and car starts like nothing happened, doesn't always do this.  Had oil pressure switch replaced, replaced fuel pump three times, had carbuerator rebuilt.  Checked connections to fuel pump their ok.  Don't know what else to check or do ????????  Any suggestions out there ? ? ? ?

3 Answers


What is the temp of the engine and how close are the fuel lines to the exhaust?


And the fuel pump is mechanical if it has a Carb not electric.

The fuel pump in a 1979 Chevy Monza is electric, and yes, it does have a carburetor. I have the '79 Spyder version with a V-6 and I had a similar problem. The fuel line routes very close to the heater hose, and without good fuel pressure, the car will vapor lock. I could hear the fuel pump running, but would still stall when hot. after cooling for a bit, it would run again for a while. Finally, I decided it was time to drop the fuel tank and get at the fuel pump to see if it needed to be replaced. It turns out that there is a 1.5" rubber hose inside the tank that connects the fuel pump to the fuel line, and the side of that hose had ruptured. This was enough to keep the full pressure from the pump from delivering to the carburetor. Replaced the hose, and no more problem.

Your Answer

Add photo

Related Questions


Looking for a Used Monza in your area?

CarGurus has thousands of nationwide listings and the tools to find you a great deal.


Search Chevrolet Monza Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Chevrolet Monza Experts

#1 dandyoun
Reputation 50
#2 John Sturman
John Sturman
Reputation 30
#3 Js08016
Reputation 20
View All