Here is a link to live sensor data for 4.7 engine. I have replaced both the ckp and cmp and the rf wheel speed sensor and still have the same problem.

http://www.youtube.com/watch?v=-t6kDh6UifA

 

So what sensor are you having issues with? And why is your IAT sensor reading 132*? Thats pretty high and pretty hot.

 

The code that is on is the p1391. I can not seem to fix. I have measured all the connectors at the sensors which read corretly.

Do you think that I have a bad iat sensor which is telling the pcm the wrong temp. And the causing the engine to have a slight back fire or studder when I push on the gas. I thought I might have a bad o2 sensor which is cauing my problems but I am lost right know on how to fix it.

 

try this

B/C/P/U 2004-2006 codes in full details from AllData

 

I know what the code means and what the fixs are but all the fixs I have tired with no luck. So I am looking at other problems.

I think that my IAT is telling pcm that the temp is way too hot causing the pcm to lean the condition which then is causing the timing to be to far off and is then triggering a p1391 code because the pcm is thinking my timing is off.

The reason why I orginaly thought it was a bad o2 sensor is because I am getting a small back fire which a bad o2 sensors can cause. But you brought to my attention that my IAT is way to hot which after looking into can cause a back fire also along with a hesiatation or studder when I push on the gas because it is either getting way to much fuel or not enough fuel. That is what I am think is the problem right now.

What do you think?

 

I don't know why it is reading so high. I don't think it's working like it is suppose to.

 

On a hot day and you sitting there at idle and not moving you are building heat under the hood and it is possible to get temps that high. My suggestion is to to try driving and reading temps and record outside temps and see what you get.

That link for Alldata not only explains what is it but also gives trouble shooting steps

 

The vehicle was sitting there for awhile when I went out to scan it, so the vehicle was not that hot and has been sitting there for awhile. When the vehicle was sitting their warmed up the iat didn't move stayed the same. The ect went up to about 190 and the iat actuallu went down one degree.

I think am gonna take the iat out and do some testing on it. Put the iat in hot water read ohm and then put it in some very cold water and read the ohms. I should be able to till if the Iat is bad by doing those test what do you think.

 

According to the verbiage of the Service Manual, that might just work. I wouldnt know for sure until I get home and can get on Alldata for testing porcedures.

 

When I took the iat out the sensor was black and smelled like gas. I don't if that means anything but I thought I would share.