Still having problems with FI airgap WTF
Administrator
Joined: Apr 2010
Posts: 87,483
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From: Clayton MI
Make sure your rear O2 is getting power for the heater circuit, and its 5 volt reference signal. Verify the ground on the heater circuit.
Check continuity of the signal wire from the O2 sensor, to the PCM.
If the code is resetting after you hook the battery back up, and start the engine..... it really shouldn't be doing that.
Try reflashing your PCM. (go back to stock, reset, put back in whatever tune you are using. or, even try a different tune, and see if the problem persists.)
Check continuity of the signal wire from the O2 sensor, to the PCM.
If the code is resetting after you hook the battery back up, and start the engine..... it really shouldn't be doing that.
Try reflashing your PCM. (go back to stock, reset, put back in whatever tune you are using. or, even try a different tune, and see if the problem persists.)
Champion
Joined: Aug 2010
Posts: 2,697
Likes: 3
From: Cape Carteret NC
is the o2 sensor new?
what brand of o2 are you using?
Did YOU look up the part number to make sure it was the right one, or did you rely on a counter person looking it up for you?
if it's the rear one, and it's the wrong one- the fouler trick isn't going to help you..
if it's the same one that was fine before, then the fouler trick is the easiest and cheapest way out- unless it is on another level like Zman and HeyYou are suggesting- if it's a ground you failed to put back, or on a PCM level- you've got issues I can't make any suggestions for..
what brand of o2 are you using?
Did YOU look up the part number to make sure it was the right one, or did you rely on a counter person looking it up for you?
if it's the rear one, and it's the wrong one- the fouler trick isn't going to help you..
if it's the same one that was fine before, then the fouler trick is the easiest and cheapest way out- unless it is on another level like Zman and HeyYou are suggesting- if it's a ground you failed to put back, or on a PCM level- you've got issues I can't make any suggestions for..
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Joined: Jan 2011
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Joined: Jan 2010
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From: hickville WI
Ok this is ganna be long, I put the IAT sensor in the mopar round filter, temp is normal and t stat is good. I disconnected the battery and it sill popped up, I can clear the code and a second later it popped back up (truck wasnt running). IDK what brand I bought them at weavers, the counter guy gave me them, I did notice that the rear sensor was smaller then the one that was in it. The truck runs great I have to adjust my TV cable a lil yet it jumps in to 4 then drops back to 3 and then back to 4. The truck sounds just lik lastrights but a lil louder cuz of exhaust. I moved the ground wire and it didnt change anything. I dont think I missed anything.
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Veteran
Joined: Jan 2010
Posts: 485
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From: hickville WI
PROBLEM SOLVED, 
went to the local mechanic he plugged into my truck and first thing he says is you cant always believe what those tuners tell you. He got a completely different code My IAT sensor had a high input told me to check the wires and then sensor. Got home tonight took the tape off on the wire and hear to find out one of the wires came apart put it back together cleared the code and wat do you know the light doesnt come back on 
. Thanks everbody for helping me, NEXT step custom front bumper 
went to the local mechanic he plugged into my truck and first thing he says is you cant always believe what those tuners tell you. He got a completely different code My IAT sensor had a high input told me to check the wires and then sensor. Got home tonight took the tape off on the wire and hear to find out one of the wires came apart put it back together cleared the code and wat do you know the light doesnt come back on . Thanks everbody for helping me, NEXT step custom front bumper
