Noticing my mileage is getting worse

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Apr 17, 2014 | 10:48 PM

Swamy21

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Joined: Feb 2014

Posts: 31

Noticing my mileage is getting worse

So my 95 GlE seems to be having ****ty gas mileage , I did a tune up last october ( air filter , sparkplugs , fuel filter , seafoam.) My injectors sound okay , not sure what should be done ?
Suggestions?

Apr 17, 2014 | 11:17 PM

asand1

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From: Reedsport, OR

Any codes?

Apr 18, 2014 | 01:03 AM

dwapenyi

Supporting Maxima.org Member

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If you've done every other maintenance item, then it's your primary O2s....even without a check engine light. Replace them.

Apr 18, 2014 | 01:23 AM

asand1

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From: Reedsport, OR

Its more likely the KS. If we knew what any codes were it would help. The KS will not trigger a CEL either.

Apr 18, 2014 | 01:26 PM

Swamy21

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Posts: 31

No codes that I know of , does the max have one or two sensors?

Apr 18, 2014 | 02:36 PM

asand1

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From: Reedsport, OR

Just one knock sensor. You need yo have it scanned or read the stickies and do it yourself.

A bad ks will cause the ecu to go full retard on the timing, and power and economy suffers.