Nissan Frontier Forums: horrible gas mileage and engine codes

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Nissan Frontier Forums : Problems / Technical

Topic: horrible gas mileage and engine codes

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joshf78
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Posted: Apr 27 2011 at 11:37am \| IP Logged

the trucks cel has been on since i got it, because of the evap canister soleniod being fused in the open position. no i havent replaced it yet. however, lately the truck has been horrible on gas and sometimes when its damp, a cold start causes it to stall, run super rich, not stay running if you tap the gas, and just be a pig in general. at first i thought it was spark related, but distributor, wires and plugs are all in great shape, replaced recently. a spray bottle misting the wires didnt cause any issues either. i also replaced the oxygen sensor in the summer, oem.
so here are the codes:
0446 (charcoal canister vent, i know about this one)
0180 fuel temp sensor a circuit
0135 o2 heater circuit(though it still threw the code after replacing the sensor)
0110 intake air temp sensor
1400 egr circuit low input pressure (part of the charcoal canister issue?)
and then repeats 0110, 0180, 0446, 1400, the only one not repeated is o2 heater.
why set the code twice? and what is going on with my truck?!?! i looked at and made sure the intake air temp sensor was clean, i cant get the sending unit off my tank without breaking all the bolts, so unless absolutely nescessary i am not going further on that. if i have to i'll just drive some self tapping screws in to hold it together afterwards.
is there a possibility that i have a bad ground wire somewhere that might affect these sensor readings?
anyways, i need help! i cant keep filling the truck up at these prices and getting crap mileage!

lakota
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Posted: Apr 27 2011 at 4:54pm \| IP Logged

It would be a good idea to state what model Frontier you have. And put it in a SIG like mine.

Have a good one.. Don S..

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PLEASE >>> A SIG similar to mine can be VERY HELPFUL to all the members!
'99 4x4 3.3 Frontier Se KC Auto, 48,000 miles
'76 4x4 401 Wagoneer QT
'04 FWD 1.8 Sentra '08 FWD 2.4 Camry LE
Fort Worth

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