NGK/NTK. https://www.ebay.com/itm/36260635684...Bk9SR57OhaX3Yg Look for one that has the yellow plug like ours. I got a set of 6, 2-3 years ago with really long wires for $40 - $50. I stay clear of the 4 wire without connectors. Unless you solder the old connector with the new and put an environmental seal on it would I trust it for any length of time.

 

Thanks for the response. My wiring harness has the circular black plugs so I'll have to remove the yellow ones from the new sensors and solder on the old ones, after checking that they're serviceable of course.

Out of curiosity is there any reason why these yellow plug ones are better? Does it just boil down to an issue of quality?

 

Stay away from ebay for parts!!! Unless you know the # to look for. As it says on ebay...
Features Direct Fit

Manufacturer Part Number
Does Not Apply
Hmmmm? How is it a direct fit without a part #? Oh, I went on ebay for parts! Well i went to the ntk website and looked up the part #'s for your truck. NONE OF THEM ARE LISTED IN LINK ABOVE! They list 3 part #'s, I assume they are the same for both banks. They didn't list what bank they are for.

 

Thanks for the comment. I double checked the NTK website and it appears that they've stopped production on the specific upstream/downstream sensors and only supply one (#23179) for all four sensor locations. Supposedly they're in stock so I'm going to order four of these bad boys and report back once they've been installed.

 

Nothing wrong with ebay, I get most of my OEM parts there. I'm out.

 

As long as you know what to look for with a part # it's not. There was another post where someone was looking for a fuel pump there. They listed a manufacturer # but i could not find that # anywhere! I wouldn't be surprised if they put china made parts in well known brand boxes and try to pass then off. Crap from china is known to mimic well known brands and try to sell it in the states. Ever watch "to catch a smuggler"? They look at the supplys coming in to the US from overseas and catch this kind of stuff. Fake i phones, Gucci bags and anything you can think of. Ebay was awesome back in the 90's and early 2000's. There wasn't any of this cheap china crap that it is bombarded with today.

You might want to check again using the specific 02 sensor button, They list left/right front and the 23179 witch is the downstream one. Not using the button lists no location description.

 

So I got the new sensors installed and fired up the truck. I apparently no longer have any P0132, P0135, or P0138 codes but immediately upon startup I got the P505 code for the IAC valve circuit. Additionally, the truck idles in closed loop at around 1000 RPM. I checked the following on the harness (PCM C1 connector) and the IAC sensor connector (Pin 19, Pin 10, Pin 11, Pin 20 on C1): Voltage with key in ignition and engine off (12.46v, 0v, 12.49v, 0v), Continuity to ground at connector (No, yes, no, yes), Continuity to ground at harness connection to PCM (No, no, no, no), Continuity from harness connection to PCM and connector (Yes, yes, yes, yes). To my knowledge everything checked out, so I went to get a new IAC sensor from Autozone but to no avail I still have the code and disconnecting the negative battery terminal and turning on the headlights to drain energy from the system does not reset it. I recently redid the climate control system and thought I might've had a vacuum leak somewhere there so I capped that off, nothing. I also sprayed starter fluid around the throttle body, intake manifold, and other vacuum connections, but there was no increase in RPM. Out of frying pan and into the fire...

 

Might try removing the throttle body and thoroughly cleaning the well in the back of the throttle body where the IAC piston extends into, along with the entire throttle body. While there, install a fresh throttle body intake gasket, too.

 

Sounds like you are using aftermarket iac. There are a lot of issues with the aftermarket ones. Have you checked the pcv valve to see if it's leaking? Vac lines broke?

 

The throttle body was completely cleaned about a month ago and a fresh gasket was also installed; I just checked with well with a shop towel and there was virtually nothing. Thanks for the suggestion and reply though!