WTB O2 Sensor Harness November 07, 2008, 11:25:41 AM I'm looking for an O2 sensor harness out of an 88, 5.0 automatic tranny Bird, or Cougar. The harness needs to have the low-oil sensor plug on it for the oil pan too. If you have one, let me know. Thanks. Quote Selected
WTB O2 Sensor Harness Reply #1 – November 07, 2008, 12:13:36 PM The ones for the cast manifolds are too short for the tube headers... You'll need one from a Stang or LSC Lincoln...I seem to remember the low oil sensor wire in the main harness on the TC, could be wrong, I never hooked mine up... It only functions when switch is first turned on, not while engine is running... Quote Selected
WTB O2 Sensor Harness Reply #2 – November 07, 2008, 05:14:20 PM I think the oil sensor comes right in with the fuel injector and distributor harness. Quote Selected
WTB O2 Sensor Harness Reply #3 – November 07, 2008, 09:36:21 PM I figured I'd have to just use extensions for the O2 pigtails, but if O2 harnesses offMark VII's are long enough to work on long-tubes, I'll try to find a Mark VII forum. If I can find a forum like that, I'll try to find someone with a parts car.The low oil sensor is on the H.E.G.O. Harness. I've seen them on harnesses and that's where the Ford manual shows it. Quote from: TurboCoupe50;242053The ones for the cast manifolds are too short for the tube headers... You'll need one from a Stang or LSC Lincoln...I seem to remember the low oil sensor wire in the main harness on the TC, could be wrong, I never hooked mine up... It only functions when switch is first turned on, not while engine is running... Quote Selected
WTB O2 Sensor Harness Reply #4 – November 08, 2008, 01:29:55 PM Here's a pic of an O2 sensor harness for our cars with the low-oil sensor plug. Pretty, isn't it? This harness was made for use with long-tubes. It has an extra 2 feet of length added to the O2 sensor pigtails to accommodate the LT's. I just might say the heck with it and buy this new harness. At least I wouldn't have to worry about the EEC getting bad signals from the O2 sensors that way. Quote Selected
WTB O2 Sensor Harness Reply #5 – November 15, 2008, 01:28:22 PM Quote from: TurboCoupe50;242053The ones for the cast manifolds are too short for the tube headers... You'll need one from a Stang or LSC Lincoln...I seem to remember the low oil sensor wire in the main harness on the TC, could be wrong, I never hooked mine up... It only functions when switch is first turned on, not while engine is running...Thanks as always for the help Tom. I found a guy with an 88 Mark VII that is selling me his O2 harness. I'm left wondering though, why would an 88 LSC like his car have a longer O2 harness than an 88 T-Bird? Their both basically the same car powertrain-wise, aren't they? I know the LSC is a little longer, body-wise, but since it has the same engine and tranny, why is the O2 harness longer. Please educate me on this. Are the O2 sensors in the H-pipe on the LSC's, or something? I didn't think LSC's came with factory headers like Mustangs. Quote Selected
WTB O2 Sensor Harness Reply #6 – November 15, 2008, 06:59:07 PM I believe the '87+ LSC's came with factory headers. I have a set of these headers on my car that came off a '91 LSC Quote Selected
WTB O2 Sensor Harness Reply #7 – November 26, 2008, 08:27:12 PM Can anyone tell me what the year range would be of LSC's that would have an O2 harness that would be compatible with our cars? I thought any 89 and newer LSC would be an MN12 chassis car. If that's so, the O2 harness off those cars wouldn't work on my car would it? Quote Selected
WTB O2 Sensor Harness Reply #8 – November 27, 2008, 09:24:41 AM 93 and up mark viii is mn12 chassis. Quote Selected
WTB O2 Sensor Harness Reply #9 – November 27, 2008, 04:00:38 PM your car is an 88 right? ... that would make it a fox... Quote Selected
Yep. It's an 88 Reply #10 – November 27, 2008, 04:14:27 PM Since I've read that wiring harnesses in 89-93 Mustangs are a lot different than the harnesses in our cars (87-89 T Birds), I didn't know if an O2 sensor harness out of an 89-93 Mark 7 would work in my 88 Bird. I figured the wiring would be different. If I could use the O2 harness out of any Mark 7 up to 93, that would definitely help tremendously. Quote Selected
WTB O2 Sensor Harness Reply #11 – November 27, 2008, 11:43:54 PM you should be able to. If you want a stock harness, I think I have one. Quote Selected
WTB O2 Sensor Harness Reply #12 – December 16, 2008, 12:15:07 AM Quote from: Haystack;245063you should be able to. If you want a stock harness, I think I have one.Thanks for putting that offer out there Haystack, but I found one that I'm gonna use. I apologize for it taking me so long to see that you made an offer. Like a dummy, I didn't notice your post until now. Quote Selected
WTB O2 Sensor Harness Reply #13 – December 16, 2008, 07:57:23 AM Quote from: Haystack;242092I think the oil sensor comes right in with the fuel injector and distributor harness.On the Cougarbirds.....AFAIK, yes. Quote Selected
WTB O2 Sensor Harness Reply #14 – December 16, 2008, 10:24:51 AM Quote from: V8Demon;247742On the Cougarbirds.....AFAIK, yes.My EVTM for 88 CatBirds came in the mail yesterday. On page 54, Figure 1 shows that the low oil sensor wiring on TC's like mine, went from the plug in the oil pan, to the 4 cyl. Engine harness. A 4-pin, grey connector from the dash harness connects to the engine harness. This completes the ground circuit, from the sensor plug in the oil pan, to the low oil level relay under the dash.On page 79 of the EVTM, figure 2 shows that on V8 CatBirds, wiring from the sensor plug in the pan runs forward along the oil pan rail, loops up over the front of the exhaust manifold and then is routed back toward the master cylinder area of the firewall. Page 128 has a schematic which shows that V8 cars have just one connection between the plug in the pan and the inside of the passenger compartment where the low oil relay is located. That connector is "C2001.". This same schematic shows that the wire in the dash harness for the low oil level sensor is white with a pink stripe (wire #258).On page 236 of the EVTM, the location of connector C2001 is stated as being "LH fender apr0n, near dash panel.". That confirms it's in the dash harness.Having said all this, it seems, that both V8 and 4 cyl. CatBirds have connectors for their low oil level sensors in their dash harnesses. For guys like me that are doing a 5.0 swap in their TC's, the aforemention information is what you need to know, if you want to retain a functioning low oil warning system (which I do). The "How The Circuit Works" paragraph on page 129 states that the low oil warning light will remain ON when the ignition switch is in the run, or start position if there is an inadequate amount of oil in the pan. I see that as a really good feature to have. If the light only worked briefly, when starting the car, I wouldn't bother hooking the system up, but since that's not the case, I think the system's a keeper.On my car, I removed the white/pink wire from the 4 pin connector in the dash harness and am going to pin it into the plug in the EEC harness that the O2 sensor harness connects to. From there, I'm going to run a wire out of the other side of the O2 harness plug and on down to the low oil plug in the pan. Now all I need to do is find someone with a low oil sensor plug to sell. Lol Quote Selected
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