I found this two wire plug the other night when I was changing spark plugs on the '02 Grand Marquis. It's coming up from somewhere below the alternator between the rear of the alternator and the bracket. Anybody know what it is? I'm guessing it's for something I don't have, Police alternator maybe? The wires are pretty frayed and I don't believe it was connected prior to the plug swap.
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It looks like it should be attached to a bracket and something else plugged into it... so maybe for the knock sensor that should be in the valley? Should run fine without that connected as long as the fuel is good. Can't think of anything else over there that would look like that.
Only two things are infinite, the universe and human stupidity, and I'm not sure about the former. -- Albert Einstein
rides: 93 Crown Vic LX (The Red Velvet Cake), 2000 Crown Vic base model (Sandy), 2003 Expedition (the vacation beast)
Originally posted by gadget73... and it should all work like magic and unicorns and stuff.Originally posted by dmccaigOverhead, some poor bastards are flying in airplanes.
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Originally posted by sly View PostIt looks like it should be attached to a bracket and something else plugged into it... so maybe for the knock sensor that should be in the valley? Should run fine without that connected as long as the fuel is good. Can't think of anything else over there that would look like that.
Edit: I don't know how true it is but according to what I read on CVN the knock sensor didn't come out until '03 on the Panther 4.6. The parts system at work shows a dual knock sensor with a totally different connector. I'm reading that that's only for the Marauder. So I'm guessing maybe the wiring harness is compatible with another vehicle that had the knock sensor? Either way it doesn't seem like anything is missing.Last edited by mercurygm88; 07-01-2022, 02:34 AM.
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Looking through my 2008 evtm connector views, the only thing that comes close is the knock sensor connector and the cylinder head temp sensor connector, keying does not match. If they did replace the engine, the question is what engine is in it and what year it came from if they kept the engine harness with it.
Can you make out what the wire colors are?Last edited by GM_Guy; 07-01-2022, 09:57 AM.
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Originally posted by GM_Guy View PostLooking through my 2008 evtm connector views, the only thing that comes close is the knock sensor connector and the cylinder head temp sensor connector, keying does not match. If they did replace the engine, the question is what engine is in it and what year it came from if they kept the engine harness with it.
Can you make out what the wire colors are?
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Knock sensor (for 2008MY) is yellow-red & yellow.
Cylinder head temp is yellow-light green & grey-red.
The other two wire thing (besides injectors and coil plugs) is the heated pcv (which lives on the passenger valve cover, similar connector though) which is white-orange & red-yellow.
heated pcv; https://shop.advanceautoparts.com/p/...lVehicle=false
cylinder head temp sensor; https://shop.advanceautoparts.com/p/...ad+temp+sensor
knock sensor;https://shop.advanceautoparts.com/p/...7CL4*-49998132
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Originally posted by mercurygm88 View PostEdit: I don't know how true it is but according to what I read on CVN the knock sensor didn't come out until '03 on the Panther 4.6. The parts system at work shows a dual knock sensor with a totally different connector. I'm reading that that's only for the Marauder. So I'm guessing maybe the wiring harness is compatible with another vehicle that had the knock sensor? Either way it doesn't seem like anything is missing.1997 Grand Marquis LS HPP
2000 Lincoln Town Car Signature Series
- Richard
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Originally posted by GM_Guy View PostKnock sensor (for 2008MY) is yellow-red & yellow.
Cylinder head temp is yellow-light green & grey-red.
The other two wire thing (besides injectors and coil plugs) is the heated pcv (which lives on the passenger valve cover, similar connector though) which is white-orange & red-yellow.
heated pcv; https://shop.advanceautoparts.com/p/...lVehicle=false
cylinder head temp sensor; https://shop.advanceautoparts.com/p/...ad+temp+sensor
knock sensor;https://shop.advanceautoparts.com/p/...7CL4*-49998132Last edited by mercurygm88; 07-02-2022, 11:42 PM.
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Originally posted by Pvt.Hudson View PostKnock sensors were on all 98-99 TC's and ford decided to detune the engines for the 00 model year and the knock sensor didn't return until 03.
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Originally posted by mercurygm88 View PostI’m guessing they just continued to use the same harness. My question is if the engine was detuned for 2000 how does this car have a higher hp rating than a 2000? 235 vs 215.
2000 was simply a holdover year where they made a few changes and detuned (200 HP single exhaust, dual exhaust 215 HP) and just rode it out until the 2001 MY, The TC has the same power ratings as any regular CV/GM. PI intake introduction in 2001 is the reason for the HP bump.1997 Grand Marquis LS HPP
2000 Lincoln Town Car Signature Series
- Richard
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Originally posted by Pvt.Hudson View Post98-99 TC's ran a hotter tune then regular CV/GM of similar years, so 205 HP single exhaust, dual exhaust 220 HP.
2000 was simply a holdover year where they made a few changes and detuned (200 HP single exhaust, dual exhaust 215 HP) and just rode it out until the 2001 MY, The TC has the same power ratings as any regular CV/GM. PI intake introduction in 2001 is the reason for the HP bump.
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