Is the Stock 3.1L One wire O2 sensor the same as the TGP O2 Sensor. If not would my car run like ass or what would be the result of putting in the wrong O2 sensor?
RedZ
I just replaced mine with a Bosche, and I'm 99% sure it was the same as the n/a sensor.
get that bosch crap out of ya car asap. the o2 sensors dont read accuratly at all and will make ya mpg drop. seen it on 5 GM cars. Bosch SUCKS when it comes 2 plugs/02s.
-Jeff
:shock:
Well, it's hard for me to tell because my car was running like crap before. But I've used Bosch on previous cars, and can't really say I've had a problem.
I've heard bad about Bosch from other people as well. Just not a very good/reliable product. Mainly just cheaply made. Advance Auto's website shows all the same part numbers, but they also ALL say "universal" So you never know. If I was going to replace an O2, I would go heated like Jud did. The sensor's not that much more, and it's just a matter of a little +/- wiring.
What's the benefit of a heated O2?
W/O a heated o2 it can take several minutes (or more) to get the o2 upto temp. to start getting a reading. Although, noone should run there Turbo cars with no warmup time. There's probably other reasons, but my head hurts.
No not to save warm up time. I went to the heated 02 because the fumes were burning my eys :cry: while warming up in the garage. It takes sooo long for the 02(single wire) to warm up and start signaling to the computer to set the injector pulse time so that it isn't running rich. My condidion is low vacume (more fuel) with the cam and larger injectors.
The 4 wire heated made a huge difference. It's still a little rich but at least my wife doesn't call the fire department because she smells gas fumes in the house. :lol: The motor is leaned out in about 30 seconds from a cold start. You can also just turn the ign on for about 30 seconds and then start it which almost eliminates the fumes.
Don't know about a stock TGP but mine was always rich when cold although nothing like it was after the mods.
Jud
my car is having O2 problems as well so i figured i might as well post it here to make this thread longer.....hahahha when i cold start my car it runs good till it warms up....bout 1-2 minutes then it starts to idle rough.....like its leaning out so i pulled the plug on my o2 senosr and what do ya know the car runs good! exhaust smells rich but the idle is perfect again.....and as soon as i plug it back in the car starts to run rough again.....i think my wire got to close to the turbo housin and melted the insulation off......so untill i can get a new wire...........what damage if any would i do to my car to run it for a day or two with the o2 sensor disconnected?????
i have a brand new jeff m x over, topgun 160 chip, ac fin mod, tb bypass, custom high lift cam from comp cams, new t-28 turbo, and of course the new ac delco o2 sensor ya get with the pipe.............
HELP!!!!!!!!!!!!!!!!! :cry: :cry: :cry:
I don't think it will damage it, I think the computer has a preset fuel amout for each rpm...the o2 sensor adjusts it.
Quote from: m6ambamy car is having O2 problems as well so i figured i might as well post it here to make this thread longer.....hahahha when i cold start my car it runs good till it warms up....bout 1-2 minutes then it starts to idle rough.....like its leaning out so i pulled the plug on my o2 senosr and what do ya know the car runs good! exhaust smells rich but the idle is perfect again.....and as soon as i plug it back in the car starts to run rough again.....i think my wire got to close to the turbo housin and melted the insulation off......so untill i can get a new wire...........what damage if any would i do to my car to run it for a day or two with the o2 sensor disconnected?????
i have a brand new jeff m x over, topgun 160 chip, ac fin mod, tb bypass, custom high lift cam from comp cams, new t-28 turbo, and of course the new ac delco o2 sensor ya get with the pipe.............
HELP!!!!!!!!!!!!!!!!! :cry: :cry: :cry:
If the bare wire is kept from touching anything, no problem, a problem though if you run unplugged as the cat will plug up, just how fast I never wanted to find out :lol: Your cam has changed your VE tables so MAP signal is hard for the chip to know what to do. There was once an Adjustable MAP (NOT something most people knew about a few years ago except inside race circles, its been slowing getting known over the years now). Been too long since I knew where to get these but I know they still exist. This A-MAP will allow cam motors to be tweaked which might help things out, make sure its a 2-bar A-MAP. Again, scan tool what your fuel trim is saying when you go into close loop and it starts to surge, then after the A-Map, tweak until you can get some fuel trim numbers closer to 128, though as your engine heat soaks those values will change so need to find a happy medium, key is to get better than what you have if indeed the cam is what is messing things up.
Jeff M
hey jeff,
thanks for the help but i dont think my "cat" will plug up anytime soon! :P i dont have one 8)
but for real it could be my cam, im not sure, however the car is goin to the pontiac dealer tomorrow so they can get their hand on it and fix it for me.
HOPEFULLY THEY WILL BE DONE WITH IT IN A DAY OR TWO!!!!! cause i have 5 days of vacation next week and i would be bored shitless all week if i dont have my car to get out of the house!!!!
hahhahahahhahahhahhahas
one other thing while im thinkin about it..........my car sounds like it has a small leak between my x over and my turbo........should i have a gasket in there? cause at this point there isnt one and i didnt think it had one before but maybe it did............ :?
Quote from: gp90seget that bosch crap out of ya car asap. the o2 sensors dont read accuratly at all and will make ya mpg drop. seen it on 5 GM cars. Bosch SUCKS when it comes 2 plugs/02s.
-Jeff
I have heard from a lot of people that the 02 sensors are crap and the car will run bad and get bad mileage and everything, but the other day I was looking at the 02 sensor on my STE and noticed that it said Bosch right on it (I have never replaced it, so it was a previous owner who did). However, my STE idles pretty smooth and gets just a litle over 30mpg on the freeway, which isn't bad IMO, so it SEEMS like my o2 sensor is good. I haven't put a scantool on it and looked at the 02 readings, but my car runs pretty good with the "junk" sensor in it. I'm not gonna agree with people that it is bad or good yet, because I'm not sure, but if I ever do change to a different one, I will tell you which one I thought was better...but right now I have no complaints about the Bosch that I have.
Quoteone other thing while im thinkin about it..........my car sounds like it has a small leak between my x over and my turbo........should i have a gasket in there? cause at this point there isnt one and i didnt think it had one before but maybe it did............
Yes, there should be a gasket there.
And as for the heated 02 you are talking about...where can I get one and how much more than the regular 02 are they? Also, how difficult is it to power it? It should just be ground and switched 12v, correct?
Shawn
Quote from: m6ambamy car sounds like it has a small leak between my x over and my turbo........should i have a gasket in there? cause at this point there isnt one and i didnt think it had one before but maybe it did............ :?
there should not be a gasket there.
Quote from: malibuoldsQuote from: m6ambamy car sounds like it has a small leak between my x over and my turbo........should i have a gasket in there? cause at this point there isnt one and i didnt think it had one before but maybe it did............ :?
there should not be a gasket there.
When I pulled the turbo off our TGP Coupe to get it rebuilt there was a gasket there (but not on the downpipe side), and when we got the turbo back from the rebuild shop it came with a new gasket for it as well. So I'm pretty sure its supposed to have one...unless for some reason somebody put on in there, but I'm pretty sure the turbo had never been off before so I doubt it.
Shawn
Quote from: malibuoldsQuote from: m6ambamy car sounds like it has a small leak between my x over and my turbo........should i have a gasket in there? cause at this point there isnt one and i didnt think it had one before but maybe it did............ :?
there should not be a gasket there.
Correct, no gasket there stock, none every used stock. NOT that it's a bad idea, just not one that has been needed, but some turbo shops offer this to sell or include with rebuilds. The crossover pipe turbo flange gets checked for flatness, and milled or replaced if necessary, but the metal will give enough for small variations in the turbo flange itself not being flat, same goes for the downpipe to turbo, some give can occur and help to seal those flat surfaces. I would start the engine cold and look for white smoke/condensation to confirm a leak, tighten bolts in that area, and if you followed the directions, the anti-seize will help allow tightening of the bolts without undo stress and chances of breakage while achieving a tight enough clamp.
While at the dealer, tell them what myself and others told you to check, REALLY good idea to show them you are not a stranger to the workings of your ca, they will be more forthcoming with the info they find and in the honesty and determination of their resolve with your problems. The will check for any old or existing Service Engine Soon Codes, check the readings of the MAP and the fuel trim (those being called BLM/Block Learn Multiplier i.e. long term (memorized) fuel trim and INT/Integrator or short term fuel trim (constantly changing when o2 is warmed up and ECM is in what is called Closed Loop then)). They should (I always do) check all the values, looking for anything out of range or odd looking (signal changing too much or when it should not change). I had one odd problem with a TGP here, ran good then ran like shit, idle, cruise, power, all bad so checked the above and looked fair, but there was a constant 7 degrees of knock retard (no SES Code), and this at idle, cruise and under power (not much power with 7 less degrees), replaced knock sensor, nope, swapped ECM, nope, checked knock wire, all good??nothing left (no plug wires in the area or unhappy) so ran a new wire, nope, so ran a shielded wire grounding one end at the ECM (not both ends or risk making a ground loop), fixed?.weird but took care of this fussy female. Anyways, have them run their CAMS tool or whatever their favor and read the readings, should get them to nail things down for you pronto, but good to let us know what they find so we can help you confirm (I mean dealers often say ?a Turbo Grand Prix??, I knew they made a Turbo Grand AM?)?.well we are the most knowledgeable TGP mechanics out there, if we could just get our scan tools hooked to your car we would of had you fixed long time ago :) though its nice to get our eyes and hands on an engine we are fixing.
Good luck!!!
Jeff M