2002 Corolla plugs
in [Toyota]
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From: Ray O on 5 Jul 2010 16:56 "Jane Galt" <Jane_G(a)gulch.xyz> wrote in message news:Xns9DAC953E5E9AEJaneGgulchxyz(a)216.196.97.142... > "Ray O" <rokigawa(a)NOSPAMtristarassociates.com> wrote : > > >> The cover plate is supposed to make the engine look as high tech as it >> actually is, and it helps keep water from splashing on the coils. >> >> Having a coil for each cylinder or a waste spark system eliminates the >> need for a distributor which needs periodic replacement of the cap and >> rotor, needs adjustment, and which becomes a possible source or trouble >> as the engine accumulated mileage. > > And here I was just wondering if it was time to do all that. :) > >> Distributor assemblies are pretty >> expensive, they are a potential source of oil leaks, and they create >> drag on the engine. > > Well this car, weighing less than the 93 Corolla wagon, only gets about 3 > MPG more, on average, so something didn't work out so well there. I'd bet that the '02 has a larger displacement engine with better performance than the '93 while getting slightly better fuel economy. > >> Having individual coils allows the ECM to more >> precisely control spark timing and duration, which improves fuel economy >> and lowers emissions. > > Hard to see that, given my real life MPG experience with this car now. If you are getting 3 MPG better with a larger engine and a heavy foot, I'd say you were doing well. > >> A coil per cylinder is actually a pretty simple setup, it cleans up the >> engine compartment, and is a pretty reliable system. > > But they say to be careful because the connectors are fragile? Just be sure to release the locks before trying to pry the coil off. > >> The only >> maintenance item is the plug itself, and the high tension wire if the >> system uses a waste spark. If there is a coil per plug, there is no >> distributor cap, rotor, or high tension wires to change, and you don't >> have to keep track of the spaghetti under the hood. > > Cool. :) > > I'm gonna take a look and see if the plugs are iridium, and if not, put in > iridium. It was a worthwhile change in the 93, helped has mileage by about > 2 MPG and the pickup of the engine. ( not that this one needs any pickup > improvement! ) > > But this engine has been running a slight bit rough at times, so I was > wondering if the distributor cap & rotor needed changing. LOL What do you mean by "running rough?" rough at ide? rough at cruising rpm? > > It also makes almost a deisel grinding sound when you first start to > accelerate, but that may just be from the design of the engine, I'm not > sure. Diesel sounds are generally not described as a "grinding" sound so it is difficult to imagine what the sounds are caused by. I drove a friend's Corolla recently and noticed a heat shield buzzing sound on acceleration. She didn't mention it, so neither did I. > > Do the transmissions of the 2002 Corollas tend to develop problems? I've > noticed a slight sound from it, when turning corners sometimes. > 2002 Corolla transmissions are not known for developing problems. Sounds when turning corneres are generally not caused by the transmission. More likely causes are wheel bearings, CV joints, and ball joints. -- Ray O (correct punctuation to reply)
From: FatterDumber& Happier Moe on 5 Jul 2010 18:33 Ray O wrote: > "Jane Galt" <Jane_G(a)gulch.xyz> wrote in message > news:Xns9DAC953E5E9AEJaneGgulchxyz(a)216.196.97.142... >> "Ray O" <rokigawa(a)NOSPAMtristarassociates.com> wrote : >> >> >>> The cover plate is supposed to make the engine look as high tech as it >>> actually is, and it helps keep water from splashing on the coils. >>> >>> Having a coil for each cylinder or a waste spark system eliminates the >>> need for a distributor which needs periodic replacement of the cap and >>> rotor, needs adjustment, and which becomes a possible source or trouble >>> as the engine accumulated mileage. >> And here I was just wondering if it was time to do all that. :) >> >>> Distributor assemblies are pretty >>> expensive, they are a potential source of oil leaks, and they create >>> drag on the engine. >> Well this car, weighing less than the 93 Corolla wagon, only gets about 3 >> MPG more, on average, so something didn't work out so well there. > > I'd bet that the '02 has a larger displacement engine with better > performance than the '93 while getting slightly better fuel economy. > >>> Having individual coils allows the ECM to more >>> precisely control spark timing and duration, which improves fuel economy >>> and lowers emissions. >> Hard to see that, given my real life MPG experience with this car now. > > If you are getting 3 MPG better with a larger engine and a heavy foot, I'd > say you were doing well. > >>> A coil per cylinder is actually a pretty simple setup, it cleans up the >>> engine compartment, and is a pretty reliable system. >> But they say to be careful because the connectors are fragile? > > Just be sure to release the locks before trying to pry the coil off. >>> The only >>> maintenance item is the plug itself, and the high tension wire if the >>> system uses a waste spark. If there is a coil per plug, there is no >>> distributor cap, rotor, or high tension wires to change, and you don't >>> have to keep track of the spaghetti under the hood. >> Cool. :) >> >> I'm gonna take a look and see if the plugs are iridium, and if not, put in >> iridium. It was a worthwhile change in the 93, helped has mileage by about >> 2 MPG and the pickup of the engine. ( not that this one needs any pickup >> improvement! ) > >> But this engine has been running a slight bit rough at times, so I was >> wondering if the distributor cap & rotor needed changing. LOL > > What do you mean by "running rough?" rough at ide? rough at cruising rpm? > >> It also makes almost a deisel grinding sound when you first start to >> accelerate, but that may just be from the design of the engine, I'm not >> sure. > > Diesel sounds are generally not described as a "grinding" sound so it is > difficult to imagine what the sounds are caused by. I drove a friend's > Corolla recently and noticed a heat shield buzzing sound on acceleration. > She didn't mention it, so neither did I. > >> Do the transmissions of the 2002 Corollas tend to develop problems? I've >> noticed a slight sound from it, when turning corners sometimes. >> > > 2002 Corolla transmissions are not known for developing problems. Sounds > when turning corneres are generally not caused by the transmission. More > likely causes are wheel bearings, CV joints, and ball joints. > A diesel sound when first accelerating? Could be spark knock, I suppose. Could this thing has a spark knock sensor that isn't working?
From: Ray O on 5 Jul 2010 23:29 "FatterDumber& Happier Moe" <"WheresMyCheck"@UncleSamLoves.Mee> wrote in message news:4c325da3$0$11830$bbae4d71(a)news.suddenlink.net... > Ray O wrote: >> "Jane Galt" <Jane_G(a)gulch.xyz> wrote in message >> news:Xns9DAC953E5E9AEJaneGgulchxyz(a)216.196.97.142... >>> "Ray O" <rokigawa(a)NOSPAMtristarassociates.com> wrote : >>> >>> >>>> The cover plate is supposed to make the engine look as high tech as it >>>> actually is, and it helps keep water from splashing on the coils. >>>> >>>> Having a coil for each cylinder or a waste spark system eliminates the >>>> need for a distributor which needs periodic replacement of the cap and >>>> rotor, needs adjustment, and which becomes a possible source or >>>> trouble >>>> as the engine accumulated mileage. >>> And here I was just wondering if it was time to do all that. :) >>> >>>> Distributor assemblies are pretty >>>> expensive, they are a potential source of oil leaks, and they create >>>> drag on the engine. >>> Well this car, weighing less than the 93 Corolla wagon, only gets about >>> 3 >>> MPG more, on average, so something didn't work out so well there. >> >> I'd bet that the '02 has a larger displacement engine with better >> performance than the '93 while getting slightly better fuel economy. >> >>>> Having individual coils allows the ECM to more >>>> precisely control spark timing and duration, which improves fuel >>>> economy >>>> and lowers emissions. >>> Hard to see that, given my real life MPG experience with this car now. >> >> If you are getting 3 MPG better with a larger engine and a heavy foot, >> I'd say you were doing well. >> >>>> A coil per cylinder is actually a pretty simple setup, it cleans up the >>>> engine compartment, and is a pretty reliable system. >>> But they say to be careful because the connectors are fragile? >> >> Just be sure to release the locks before trying to pry the coil off. >>>> The only >>>> maintenance item is the plug itself, and the high tension wire if the >>>> system uses a waste spark. If there is a coil per plug, there is no >>>> distributor cap, rotor, or high tension wires to change, and you don't >>>> have to keep track of the spaghetti under the hood. >>> Cool. :) >>> >>> I'm gonna take a look and see if the plugs are iridium, and if not, put >>> in >>> iridium. It was a worthwhile change in the 93, helped has mileage by >>> about >>> 2 MPG and the pickup of the engine. ( not that this one needs any pickup >>> improvement! ) >> >>> But this engine has been running a slight bit rough at times, so I was >>> wondering if the distributor cap & rotor needed changing. LOL >> >> What do you mean by "running rough?" rough at ide? rough at cruising >> rpm? >> >>> It also makes almost a deisel grinding sound when you first start to >>> accelerate, but that may just be from the design of the engine, I'm not >>> sure. >> >> Diesel sounds are generally not described as a "grinding" sound so it is >> difficult to imagine what the sounds are caused by. I drove a friend's >> Corolla recently and noticed a heat shield buzzing sound on acceleration. >> She didn't mention it, so neither did I. >> >>> Do the transmissions of the 2002 Corollas tend to develop problems? I've >>> noticed a slight sound from it, when turning corners sometimes. >>> >> >> 2002 Corolla transmissions are not known for developing problems. Sounds >> when turning corneres are generally not caused by the transmission. More >> likely causes are wheel bearings, CV joints, and ball joints. >> > A diesel sound when first accelerating? Could be spark knock, I suppose. > Could this thing has a spark knock sensor that isn't working? If the knock sensor was not working, I would imagine that the OBD II system would illuminate the malfunction indicator light, or MIL. If the sound is knocking or pinging, then the sound should last less than 3 seconds on acceleration. If this is the case, the ECM is retarding the spark timing and Jane should buy a little higher grade of fuel. This could also account for lower fuel economy. -- Ray O (correct punctuation to reply)
From: Clive on 8 Jul 2010 16:14 In message <XDrYn.9708$0A5.7340(a)newsfe22.iad>, =?iso-2022-jp?q?Hachiroku_=1B$B%O%A%m%=2F=1B=28B?= <Trueno(a)e86.GTS> writes >On Mon, 05 Jul 2010 15:42:08 -0500, Jane Galt wrote: >> Gary L. Burnore <gburnore(a)databasix.com> wrote : >>> On Sun, 04 Jul 2010 16:29:17 -0400, Hachiroku ???? <Trueno(a)e86.GTS> >>> wrote: >>>>On Sat, 03 Jul 2010 22:58:28 -0500, Ray O wrote: >>>>> "Jane Galt" <Jane_G(a)gulch.xyz> wrote in message >>>>> news:Xns9DA5E652A73EBJaneGgulchxyz(a)216.196.97.142... >>>>>> Ok, this is odd. >>>>>> I mentioned getting this 02 Corolla awhile back. I just went to look >>>>>> at the >>>>>> plugs, to see if they're iridium, or what, but ( and this is the >>>>>> first time >>>>>> I've ever had this happen ) I cant find them! >>>>>> Ok, where are they hiding the plugs??? >>>>>> - Jane Galt >>>>> The plugs are in the head, hiding under the coils. Each plug has an >>>>> individual coil. Look for 4 coils evenly spaced across the head. >>>>Wow. Each plug has it's own coil? >>> Frightning, but true. >> So they're designing them to be as expensive as possible to maintain >> now??? >Must be the same coil in the Scion. They're the same price. As another poster has said, it makes for reliability, doing away with points and condenser, distributor cap and leads, the last two being very sensitive to rain. -- Clive
From: Mike Hunter on 8 Jul 2010 16:34
What manufacture today still uses a single coil or points, condenser, distributor? Modern engines are SMEFI or SMDFI "Clive" <clive(a)yewbank.demon.co.uk> wrote in message news:Y5lcuRO0GjNMFwT2(a)yewbank.demon.co.uk... > In message <XDrYn.9708$0A5.7340(a)newsfe22.iad>, > =?iso-2022-jp?q?Hachiroku_=1B$B%O%A%m%=2F=1B=28B?= <Trueno(a)e86.GTS> writes >>On Mon, 05 Jul 2010 15:42:08 -0500, Jane Galt wrote: >>> Gary L. Burnore <gburnore(a)databasix.com> wrote : >>>> On Sun, 04 Jul 2010 16:29:17 -0400, Hachiroku ???? <Trueno(a)e86.GTS> >>>> wrote: >>>>>On Sat, 03 Jul 2010 22:58:28 -0500, Ray O wrote: >>>>>> "Jane Galt" <Jane_G(a)gulch.xyz> wrote in message >>>>>> news:Xns9DA5E652A73EBJaneGgulchxyz(a)216.196.97.142... >>>>>>> Ok, this is odd. >>>>>>> I mentioned getting this 02 Corolla awhile back. I just went to look >>>>>>> at the >>>>>>> plugs, to see if they're iridium, or what, but ( and this is the >>>>>>> first time >>>>>>> I've ever had this happen ) I cant find them! >>>>>>> Ok, where are they hiding the plugs??? >>>>>>> - Jane Galt >>>>>> The plugs are in the head, hiding under the coils. Each plug has an >>>>>> individual coil. Look for 4 coils evenly spaced across the head. >>>>>Wow. Each plug has it's own coil? >>>> Frightning, but true. >>> So they're designing them to be as expensive as possible to maintain >>> now??? >>Must be the same coil in the Scion. They're the same price. > As another poster has said, it makes for reliability, doing away with > points and condenser, distributor cap and leads, the last two being very > sensitive to rain. > -- > Clive > |