Where is downstream electrical connector on 2002 Sunfire 2.2L ?
- Thread starter briant
- Start date
92 Sunbird LE
Well-known member
Can be seen here where the O2 sensors go:
Doug in P.R.
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Doug in P.R.
Im sorry I didn't make myself clearer. I know where the 02 sensor goes on the exhaust pipe (thank you for thos pictures), What I can not figure out is where the downstream 02 sensor ELECTRICAL snap connection is, I have asked folks to no avbail. I've looked at the shop manual and on youtibe, but no joy. Can you, please provide a picture of exactly where it connects so I can reassemble my car. Failing that a drawing where I can find the connector would be great.
Thanks in advance. Best regards, Brian
Thanks in advance. Best regards, Brian
92 Sunbird LE
Well-known member
Downstream O2 starts at 2:05 in on this video, some where up in the upper engine compartment by the throttle body is where he connects the plug..
Doug in P.R.
Doug in P.R.
______________________________
Thanks for this video. I have reviewed it and, though the Cavalier is a sister to the Sunfire the engine is different enough as to be uninformative as to what I am looking for. For instance the air intake snorkle is of a different configuration as does the rest of the system. I appreciate this, but it is not really an answer to my question.
Please, if it exists, send me the specific location of the connector. I have the air intake off the car and also some kind of very stout metal plate that bolts on to the valve cover area which protects (?) part of the throttle body. I simply have been unable to locate the connection. I have worked on cars for many years, and replaced 02 sensors on a lot of them. I apologize, but this one just escepes me.
Please, if it exists, send me the specific location of the connector. I have the air intake off the car and also some kind of very stout metal plate that bolts on to the valve cover area which protects (?) part of the throttle body. I simply have been unable to locate the connection. I have worked on cars for many years, and replaced 02 sensors on a lot of them. I apologize, but this one just escepes me.
92 Sunbird LE
Well-known member
Guy on the J Body International Facebook group said it by the rear of the trans by the shifter cable, no pic provided though.....
Doug in P.R.
Doug in P.R.
Well I looked all over the area of the shift cable with a powerful flashlight and did not find anything that looks like the connector that I found for the upper 02 sensor. I moved the possible areas and wires, but none came up with a connector. The upper 02 connector is just loose hanging there, There is no loose connecter in the trans shift area.
I apologize for being so dense, but these things are usually obvious on cars even when they are hard to access. So, I'm going to ask again for a picture of where it is. The 2 massive OEM shop manuals (2000) do show a drawing of the connector (I think,) but there is no relation to the shift lever and only a close up of the area with no general drawing which first pinpoints the area then goes in for a closeup. Upon reading about the 02 sensors, any words are just cautions about using anti seize on the 02 sensors themselves and any mention of either upper or lower 02 sensor uses the same copy with no other clues as to where the are other than the use of anti seize.
Should this be this hard to find?
I apologize for being so dense, but these things are usually obvious on cars even when they are hard to access. So, I'm going to ask again for a picture of where it is. The 2 massive OEM shop manuals (2000) do show a drawing of the connector (I think,) but there is no relation to the shift lever and only a close up of the area with no general drawing which first pinpoints the area then goes in for a closeup. Upon reading about the 02 sensors, any words are just cautions about using anti seize on the 02 sensors themselves and any mention of either upper or lower 02 sensor uses the same copy with no other clues as to where the are other than the use of anti seize.
Should this be this hard to find?
92 Sunbird LE
Well-known member
Hang tight, might get more replys by tomorrow..
Doug in P.R.
Doug in P.R.
______________________________
Hi Doug, I really do appreciate all the help from this forum. I've worked on all manner of cars, mostly British and foreign stuff and haven't been stymied like this ever. Forums like this are the last, best bastion of DIYers.
Brian
Brian
92 Sunbird LE
Well-known member
No replys yet Brian, posted on the JBody.Org
forums today also...
Doug in P.R.
forums today also...
Doug in P.R.
No worries Doug, I know you didn't mean a literal day. Life doesn't work like that. We all have to learn that the rest of the world does not exist on our timetables. Eve the Jaguar forums which seem to be very busy have some time lag on answers.
Also this particular questin of mine seems to be something of an orphan. It would seem that folks would have replaced their 02 sensors several times in a protracted ownership, but what do I know?
Brian
Also this particular questin of mine seems to be something of an orphan. It would seem that folks would have replaced their 02 sensors several times in a protracted ownership, but what do I know?
Brian
Updat ... of sorts ...
I have had a couple of problems so far with trying to find this connector using the information I have so far. First, I have tried looking under the car towards the engine/trans/brakemaster area where it was supposed to be. I can only determine that it does not SEEM to be in those areas. My search is compounded by the fact that I do not have a lift and have to crawl under the car for such a view. I am 78 and have health problems so this has proven difficult. Add that to the fact that the car is pretty much obstructed under there with engine and trans stuff and that makes any but a direct upward view pretty much impossible and I have not been able to get that view yet. From what I've been able discern the connector probably comes out under the throttle body area which is pretty much closed off to any inspection unless I pull that item.
I have ordered a Haynes book but have little hope that we be very helpful. We'll see.
I reviewed the Cavalier video again, but the enginedoes not resemble the one in my car at all so I am unable to figure out where it should be, though it does SEEM to be in the area as in the video - just not visible. Also by reviewing what other Cavalier/Sunfire videos I could find I'm pretty sure my car is of an older type J body - say 97 - 2001. So perhaps any downstream videos will more accurately match those year cars.
I have had a couple of problems so far with trying to find this connector using the information I have so far. First, I have tried looking under the car towards the engine/trans/brakemaster area where it was supposed to be. I can only determine that it does not SEEM to be in those areas. My search is compounded by the fact that I do not have a lift and have to crawl under the car for such a view. I am 78 and have health problems so this has proven difficult. Add that to the fact that the car is pretty much obstructed under there with engine and trans stuff and that makes any but a direct upward view pretty much impossible and I have not been able to get that view yet. From what I've been able discern the connector probably comes out under the throttle body area which is pretty much closed off to any inspection unless I pull that item.
I have ordered a Haynes book but have little hope that we be very helpful. We'll see.
I reviewed the Cavalier video again, but the enginedoes not resemble the one in my car at all so I am unable to figure out where it should be, though it does SEEM to be in the area as in the video - just not visible. Also by reviewing what other Cavalier/Sunfire videos I could find I'm pretty sure my car is of an older type J body - say 97 - 2001. So perhaps any downstream videos will more accurately match those year cars.
______________________________
92 Sunbird LE
Well-known member
Or the driver's door tag........
Doug in P.R.
Doug in P.R.
Well. lets see.I've always trusted the stated information about licenses, etc and have never found it to be in error. Therefore I've never had to resort to figuring out what year the car was registered as.
However, having said that, why didn't you explain how to decipher the VIN number instead of just post a useless answer to my question. In fact, the registration year of the car is 2001, but that would not have helped any as all the information I was able to come up with is for newer cars and the older cars do not address the downstream 02 sensor at all. Additionally the shop manuals I was able to get (2 heavy, hefty volumes) are for the 2000 model year and the VIN info only lists the year of that car - a "Y" notation. My VIN lists a "1" notation in that position. I do not have the driver's manual.
Further, I have been unable to find any reference to any year that they changed to configuration of the engine area, snorkel, etc. I suppose we're all just supposed to know those things OR alternatively, take it to our toy dealer to fix/understand. I have never in all my years of working on complicated, sophisticated cars (Jaguars, Audis, Porsches, etc. since 16 or so) had to take a car to the dealer to fix. I would not do it this time either.
In fact I have just raised the entire front end of the car and scooted under it to steal a glimpse of the connector. Before I had only raised one side - the side it was supposed to be on. As I suspected in my previous post it is, in fact, at the center area of the engine under the throttle body and is further roughly inaccessible for any but children hands from below and it defies any logical intent to get at it in any way from above as is usually the case for all the various makes of cars I've dealt with.
This is just an UNFORGIVABLE placement of manufacturing unless it is solely designed to get the dealer more money which, I suspect, is the case.
However, having said that, why didn't you explain how to decipher the VIN number instead of just post a useless answer to my question. In fact, the registration year of the car is 2001, but that would not have helped any as all the information I was able to come up with is for newer cars and the older cars do not address the downstream 02 sensor at all. Additionally the shop manuals I was able to get (2 heavy, hefty volumes) are for the 2000 model year and the VIN info only lists the year of that car - a "Y" notation. My VIN lists a "1" notation in that position. I do not have the driver's manual.
Further, I have been unable to find any reference to any year that they changed to configuration of the engine area, snorkel, etc. I suppose we're all just supposed to know those things OR alternatively, take it to our toy dealer to fix/understand. I have never in all my years of working on complicated, sophisticated cars (Jaguars, Audis, Porsches, etc. since 16 or so) had to take a car to the dealer to fix. I would not do it this time either.
In fact I have just raised the entire front end of the car and scooted under it to steal a glimpse of the connector. Before I had only raised one side - the side it was supposed to be on. As I suspected in my previous post it is, in fact, at the center area of the engine under the throttle body and is further roughly inaccessible for any but children hands from below and it defies any logical intent to get at it in any way from above as is usually the case for all the various makes of cars I've dealt with.
This is just an UNFORGIVABLE placement of manufacturing unless it is solely designed to get the dealer more money which, I suspect, is the case.
Well, apparently I needed ore than luck- perhaps divine intervention. I even tried to take some pics of the tucked away connector, but no joy. I tried to get my hands in the allotted spaces under the car and through the wheel well, but could touch it and nothing more. I have since given up and will let the next masochist try it. Thanks for all of you trying to help me, but evidently it was not meant to be.
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Well, just to reprt on the upshot ... I finally got the car inspected. It turns out that I had to drive 164 miles all told (like I stole it) full of high test to reset the 02 sensor that was one of the things keeping it from passing. The "evap not ready" never reset. I bought a new gas cap, performed a smoke test on the car with no results so I don'y know what is wrong. I guess I'll never know.
Well, t's been another year and it's inspection tine I had to use the car for a visit to a sick friend. So since I didn't want to get a ticket I took the car to get inspected assumng it would fail. It did fael and the trip to the friend was about 30 miles away so I drove it hard and as fast as I dared for a while (traffic) and hit 80 for a brief time. At the end of the etir I put my Autel scanner on it and it showed no improvement. If I took it back for the free re-inspection it would have failed again,
Has anyone figured out where the electrical connectior (plug in) fir the downsream O2 sensor is? This is realy gettin to be ludicrous. Please help!!
Has anyone figured out where the electrical connectior (plug in) fir the downsream O2 sensor is? This is realy gettin to be ludicrous. Please help!!
Sorry. Dad long since gone bought this new in 2001 and had had it ever since until I inherited it. I suppose what you say could happen to a car, but it never did on this one. It's only got 43K original miles on it and it hasn't been abused or messed with since I got it. I simply (HAH!!) want o change th downstream O2 sensor, but cannot. I don't know why this car suddenly passed the test last year or why it has the same problems this year. It has foor not ready monitors and it is only allowed two.
I would have imagined since a year has pased some professional Pontiac tech would have gotten wind of this topic and seen his way clear to help out this fool. I guess not. I do have and have had and worked on Jaguars in the past and he on line Jaguar forums are chock a block with info on nearly everything you can think of. Those forums are very, very helpful about any type of problem.
I will keep looking and referencing all manner of info till I find this or get rid of the car.
I would have imagined since a year has pased some professional Pontiac tech would have gotten wind of this topic and seen his way clear to help out this fool. I guess not. I do have and have had and worked on Jaguars in the past and he on line Jaguar forums are chock a block with info on nearly everything you can think of. Those forums are very, very helpful about any type of problem.
I will keep looking and referencing all manner of info till I find this or get rid of the car.