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Po171, 2002 chevy Tahoe 5.3 40 psi fuel pressure. Changed…

Customer Question
2002 chevy Tahoe 5.3...

2002 chevy Tahoe 5.3 40 psi fuel pressure. Changed filter, plugs and wires and maf

Mechanic's Assistant: How many miles are on the vehicle? And when was it last serviced?

356,000 and I self service it all year

Mechanic's Assistant: Are you fixing your Tahoe yourself? What have you tried so far?

My initial problem was an cold air intake that allowed water to be pulled up into intake. I have changed plugs, wires, tps sensor and maf.

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

It runs fine but after a while of driving it starts to hesitate upon inclines. Also getting lean codes

Submitted: 11 months ago.Category: Chevy
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Answered in 2 minutes by:
8/2/2017
Chevy Mechanic: Gunvir Singh,
 replied 11 months ago
Gunvir Singh
Category: Chevy
Satisfied Customers: 2,013
Experience: Master Tech at Kennesaw Auto Tech
Verified

Hello, let me review your request. Please stand by.

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Chevy Mechanic: Gunvir Singh,
 replied 11 months ago

Is p0171 the only code present?

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Customer reply replied 11 months ago
Po174 also
Chevy Mechanic: Gunvir Singh,
 replied 11 months ago

Ok. Need to start with fuel pressure. The fuel pressure you have is too low, it is supposed to be 55-62 psi.

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Chevy Mechanic: Gunvir Singh,
 replied 11 months ago

Do you have any other questions?

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Customer reply replied 11 months ago
No
Chevy Mechanic: Gunvir Singh,
 replied 11 months ago

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