Engine will not stay running?

1999 GMC YUKON

126,000 MILES • 5.7L • V8 • 4WD • AUTOMATIC

YOURMAMA1975

MEMBER
2 POSTS

I just replaced my fuel pump fuel sending unit. The engine starts then shuts off. Fuel pump is kicking on because I could hear it. Error code came up saying I have a bad MAP sensor fault. Could my map sensor cause this? Because I really don't want to drop my gas tank again to replace another fuel pump fuel sending unit. Any help would be greatly appreciated.

Nov 5, 2022 at 3:25 PM

JACOBANDNICKOLAS

✓Experienced Mechanic
110,244 POSTS

Hi,

If the MAP is bad, yes it could cause this to happen. Check to see if there are any issues at the connector. Check for corrosion or damage to the connector.

I attached the directions below showing how it's replaced.

Let me know what you find.

Joe

Take care,

Joe

See pics below.

Images (Click to enlarge)