Sparky83

Hey all, I've got my 86 720 D pickup, and I've had the sensor light on for a while now. And just recently, I've noticed my gas mileage has gone to crap... My first question is, what exactly does the sensor light mean? Is that the O2 sensor? And if that was bad, would it affect my gas mileage? I appreciate any help!

Sparky83

No ideas? Anybody?

spec240sx

YES and YES.
You can have the O2 bad and/or the Water Temp bad also...

aaronford

Isn't there a way to check the codes on this model. I think I recall running them on an 84 Sentra?

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Aaron Ford
95 2WD Nissan PU E
2002 Oldsmobile Intrigue GX
"The hard part about playing chicken is knowing when to flinch" Scott Glenn in The Hunt for Red October

Sparky83

My truck is the early 86 model, and from what I've heard before on this forum, I can't check the codes. But the light is on, and my temp guage works, so that only leaves the o2 sensor right?

88pathoffroad

I do believe you've answered your own question...

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