SrMichi Posted May 14, 2009 Report Share Posted May 14, 2009 How hard is it to change one on a 3.1? do i have drain any fluids out before i take out? how do you get to it? Quote Link to comment Share on other sites More sharing options...
ns87 Posted May 14, 2009 Report Share Posted May 14, 2009 The best way to do it is to rock the engine forward (you can find out how in the FAQ section). Once you do that, you can reach behind the engine and get a deep socket on that sucka. Why do you have to replace it though? The sensors don't tend the fail, just the plastic breaks away on the sensor and wiring harness. Quote Link to comment Share on other sites More sharing options...
SrMichi Posted May 14, 2009 Author Report Share Posted May 14, 2009 I dont know i guess i just want to try changing something new and learn from it. OH and also i saw the wire on it and some parts on it where just bare. Quote Link to comment Share on other sites More sharing options...
ns87 Posted May 14, 2009 Report Share Posted May 14, 2009 A friendly suggestion is try replacing something else, easier to reach Change your oil! Much more straight forward. If there is something wrong with the sensor, it WILL throw an engine code on your car. The car will feel a lot slower too, when the timing is set back. Quote Link to comment Share on other sites More sharing options...
Crazy K Posted May 14, 2009 Report Share Posted May 14, 2009 I dont know i guess i just want to try changing something new and learn from it. OH and also i saw the wire on it and some parts on it where just bare. next time you are at a junkyard find a 94 or 95 3100 car. the knock sensor is on the front of the engine, try taking it off. btw, you say your wire is bad? take the wire from the same car and replace the end of your wire with it. (the wire is part of the engine harness, not the sensor) Quote Link to comment Share on other sites More sharing options...
SrMichi Posted May 14, 2009 Author Report Share Posted May 14, 2009 A friendly suggestion is try replacing something else, easier to reach Change your oil! Much more straight forward. If there is something wrong with the sensor, it WILL throw an engine code on your car. The car will feel a lot slower too, when the timing is set back. I do have to change the oil this weekend . ill just try to change it i all ready order the sensor and the wire and it should be arriving today. I dont know i guess i just want to try changing something new and learn from it. OH and also i saw the wire on it and some parts on it where just bare. next time you are at a junkyard find a 94 or 95 3100 car. the knock sensor is on the front of the engine, try taking it off. btw, you say your wire is bad? take the wire from the same car and replace the end of your wire with it. (the wire is part of the engine harness, not the sensor) Yeah i know i order new wire and it should be here today. the one currently on looks like the previous owner took it to the shop and they cut it by accident and crimped it together with something and left it there hanging Quote Link to comment Share on other sites More sharing options...
RobertISaar Posted May 14, 2009 Report Share Posted May 14, 2009 The sensors don't tend the fail, just the plastic breaks away on the sensor and wiring harness. i know all about that, had to epoxy it back on there after i knocked it apart while changing the oil filter... it occasionally disconnected, threw a code and ran like shit. stopped plugged it back in, good as it was before. Quote Link to comment Share on other sites More sharing options...
w-bodys_are_the_best Posted May 14, 2009 Report Share Posted May 14, 2009 You're probably going to be kicking yourself, the 3.1 knock sensors tend to be brittle and break off in the block, and you do not want that to happen. My GF's dad's 91 euro has sat for 2 months now because of that, I tried buying it off him cheap, but he won't give. Quote Link to comment Share on other sites More sharing options...
SrMichi Posted May 15, 2009 Author Report Share Posted May 15, 2009 You're probably going to be kicking yourself' date=' the 3.1 knock sensors tend to be brittle and break off in the block, and you do not want that to happen. My GF's dad's 91 euro has sat for 2 months now because of that, I tried buying it off him cheap, but he won't give. [/quote'] Quote Link to comment Share on other sites More sharing options...
Crazy K Posted May 15, 2009 Report Share Posted May 15, 2009 You're probably going to be kicking yourself' date=' the 3.1 knock sensors tend to be brittle and break off in the block, and you do not want that to happen. My GF's dad's 91 euro has sat for 2 months now because of that, I tried buying it off him cheap, but he won't give. [/quote'] I know the plastic nipple on the end is brittle... but the sensor actually broke off leaving the part in the block stuck????? Quote Link to comment Share on other sites More sharing options...
spiderw31 Posted May 15, 2009 Report Share Posted May 15, 2009 I know the plastic nipple on the end is brittle... but the sensor actually broke off leaving the part in the block stuck????? If I had to guess, I'd say he was thinking of the CKP when posting. Quote Link to comment Share on other sites More sharing options...
SrMichi Posted May 15, 2009 Author Report Share Posted May 15, 2009 You're probably going to be kicking yourself' date=' the 3.1 knock sensors tend to be brittle and break off in the block, and you do not want that to happen. My GF's dad's 91 euro has sat for 2 months now because of that, I tried buying it off him cheap, but he won't give. [/quote'] I know the plastic nipple on the end is brittle... but the sensor actually broke off leaving the part in the block stuck????? that shit made me think twice about doing it. it would really realllly suck if that did happen i could imaging how hard it would be to take off . if the plastic part breaks off no problem right? i could have swore when i had the sensor on my hand yesterday that it was metal. Quote Link to comment Share on other sites More sharing options...
Hairdo12 Posted May 15, 2009 Report Share Posted May 15, 2009 You must have alot of cash to throw around if you're replacing perfectly good parts for the hell of it. Take that money and buy yourself a K&N air filter, or at least something productive. If its not broken, don't fix it. You might get away with it a few times, but it just takes one time where you really screw things up and then you're really thinking wtf did I do this for? If you wanna do it for the sake of learning, go to the junk yard, take a knock sensor off of a car there... stand up, take a pee and then reinstall it. Won't cost you a thing, you learned how to do it, and if you screw up - who cares. Quote Link to comment Share on other sites More sharing options...
RobertISaar Posted May 15, 2009 Report Share Posted May 15, 2009 You must have alot of cash to throw around if you're replacing perfectly good parts for the hell of it. Take that money and buy yourself a K&N air filter, or at least something productive. If its not broken, don't fix it. You might get away with it a few times, but it just takes one time where you really screw things up and then you're really thinking wtf did I do this for? If you wanna do it for the sake of learning, go to the junk yard, take a knock sensor off of a car there... stand up, take a pee and then reinstall it. Won't cost you a thing, you learned how to do it, and if you screw up - who cares. you pee in the junkyard??? Quote Link to comment Share on other sites More sharing options...
Hairdo12 Posted May 15, 2009 Report Share Posted May 15, 2009 you pee in the junkyard??? If ya gotta go, you gotta go. I don't often see the classiest of people there. I just find a van or some big clunker to go behind. Quote Link to comment Share on other sites More sharing options...
SrMichi Posted May 15, 2009 Author Report Share Posted May 15, 2009 You must have alot of cash to throw around if you're replacing perfectly good parts for the hell of it. Take that money and buy yourself a K&N air filter, or at least something productive. If its not broken, don't fix it. You might get away with it a few times, but it just takes one time where you really screw things up and then you're really thinking wtf did I do this for? If you wanna do it for the sake of learning, go to the junk yard, take a knock sensor off of a car there... stand up, take a pee and then reinstall it. Won't cost you a thing, you learned how to do it, and if you screw up - who cares. Not really but another reason is im still getting crappy mileage. What do you mean by the K&N air Filter? The drop in replacement or the whole set up? Quote Link to comment Share on other sites More sharing options...
AWeb80 Posted May 18, 2009 Report Share Posted May 18, 2009 I have a K&N filter drop in you can have for shipping if a 94 GP and your car's airbox are the same. Quote Link to comment Share on other sites More sharing options...
Crazy K Posted May 18, 2009 Report Share Posted May 18, 2009 I have a K&N filter drop in you can have for shipping if a 94 GP and your car's airbox are the same. good question. i'm not sure if the 94 lumina got the 93 or 94 style airbox, which is different. but I'll take that deal on that K&N if he doesn't... Quote Link to comment Share on other sites More sharing options...
SrMichi Posted May 18, 2009 Author Report Share Posted May 18, 2009 if its the drop in replacement i have one already. my air box is almost square shape. on my old 92 it was rectangular shape. Quote Link to comment Share on other sites More sharing options...
RobertISaar Posted May 18, 2009 Report Share Posted May 18, 2009 I have a K&N filter drop in you can have for shipping if a 94 GP and your car's airbox are the same. good question. i'm not sure if the 94 lumina got the 93 or 94 style airbox, which is different. but I'll take that deal on that K&N if he doesn't... i'd take a guess that it has the older box, since everything else from 93 carried over into it as well. Quote Link to comment Share on other sites More sharing options...
AWeb80 Posted May 18, 2009 Report Share Posted May 18, 2009 The Lumina's seemed to get all the left overs. Quote Link to comment Share on other sites More sharing options...
Hairdo12 Posted May 18, 2009 Report Share Posted May 18, 2009 I have seen 94 luminas in the jy with the newer style air box. I've also seen them with R134a from factory. Quote Link to comment Share on other sites More sharing options...
SrMichi Posted May 18, 2009 Author Report Share Posted May 18, 2009 I have seen 94 luminas in the jy with the newer style air box. I've also seen them with R134a from factory. yeah mine has the newer style air box (the air temp sensor is on the tube not on the box) and it also has R134a Quote Link to comment Share on other sites More sharing options...
RobertISaar Posted May 18, 2009 Report Share Posted May 18, 2009 well it looks like the lumina did get an improvement or two for 94... Quote Link to comment Share on other sites More sharing options...
Crazy K Posted May 18, 2009 Report Share Posted May 18, 2009 luminas got the 94+ front radiator clip. so that would make sense. Quote Link to comment Share on other sites More sharing options...
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