Question about 1990 Chevrolet Suburban
Check for a blown fuse,also,the oil pressure switch has a cut off for the fuel pump,and if the oil sending unit is bad,or the oil pressure has dropped,the fuel pump will not come on,
Posted on May 09, 2010
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Mar 05, 2016 | Dodge Cars & Trucks
Jan 31, 2015 | Geo Cars & Trucks
Apr 07, 2014 | Volkswagen Microbus Cars & Trucks
Jan 07, 2013 | 2000 Kia Spectra
Dec 13, 2012 | 2000 Ford Windstar
Jul 15, 2012 | Cars & Trucks
· Fuel Pump secondary circuit shorted to power
· Fuel pump relay contacts always closed
· Open in fuel pump monitor (FPM) circuit between ECU and connection to POWER TO PUMP circuit
· Heated Exhaust Gas Oxygen (HEGO) sensor shorted to power
· faulty ECU
Engine Does Not Start:
· Open inertia switch or inertia switch circuit
· Open in or between ECU and fuel pump (This includes open in fuel pump brushes/windings)
· faulty ground connection at fuel pump
The easiest way to check this circuit is to go to the fuel pump relay. If the relay clicks when the key is turned to the "RUN" position, then the inertia switch circuit is ok.
The Pink/Black wire starts from the fuel pump relay and goes two directions. One side goes back to the fuel pump. The other side is the fuel pump monitor circuit and goes to pin #8 at the ECU. This wire should only be hot for a second or two when the ignition is turned to the RUN position.
The fuel pump relay receives power on the Black/yellow wire. It comes from a fusible link at the power distribution center. This wire should be hot at all times.
If all the above is working as designed, them you probably have a bad fuel pump.
Feb 13, 2011 | 1992 Ford Thunderbird
May 06, 2009 | 2000 Chevrolet S-10
May 06, 2009 | 1999 GMC Safari
Mar 30, 2009 | 1993 Mercury Topaz
101 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: