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Dan, Technician
Category: Chevy
Satisfied Customers: 24212
Experience:  Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database
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Surging when going up a, 04 Chev impala 3.4, Yes I am the

Customer Question

Surging when going up a hill
JA: What is the model/year of your Chevy?
Customer: 04 Chev impala 3.4
JA: Are you fixing your Impala yourself? What have you tried so far?
Customer: Yes I am the one fixing it. I have done spark plugs
JA: How many miles are on the car? When was the last time the plugs were changed?
Customer: 160,000. I just did the plugs
JA: Anything else you want the mechanic to know before I connect you?
Customer: No
Submitted: 9 months ago.
Category: Chevy
Expert:  Dan replied 9 months ago.

Hello, my name is ***** ***** I'm here to help get your problem solved.

Expert:  Dan replied 9 months ago.

Is the check engine light on? Have spark plug wires been replaced recently? Thanks.

Customer: replied 9 months ago.
No check light. I have not done wires
Expert:  Dan replied 9 months ago.

This is a common symptom of worn wires, replace wires and problem should be taken care of. Let me know if there is anything else I can do to help. Thanks.

Customer: replied 9 months ago.
When drive the long term fuel trip is at 15 sometimes at 20. The short term fuel trip is at -2
Expert:  Dan replied 9 months ago.

That points toward possible mass airflow sensor. Disconnect sensor to see if it runs better, if so you can try to clean first with approved cleaner but if that doesn't help replace. Let me know how it goes, thanks.