2002 Corolla plugs
in [Toyota]
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From: Jane Galt on 5 Jul 2010 16:40 "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. > 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. > 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? > 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 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. Do the transmissions of the 2002 Corollas tend to develop problems? I've noticed a slight sound from it, when turning corners sometimes. -- - Jane Galt
From: Jane Galt on 5 Jul 2010 16:40 =?iso-2022-jp?q?Hachiroku_=1B$B%O%A%m%=2F=1B=28B?= <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? My '95 Tercel had two coils with a wire > coming off them and going to the adjacent plug, so you had > coil/wire/coil/wire. > > Now I'm gonna have to go look under the Scion's engine cover and see > what's there. These coil packs arfe notorious for going bad, and I don't > want to think of replacing four of them. The ones for the Tercel were $135 > each! > > > AHHHHH!!! -- - Jane Galt
From: Jane Galt on 5 Jul 2010 16:42 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??? -- - Jane Galt
From: Hachiroku ハチロク on 5 Jul 2010 16:54 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.
From: Hachiroku ハチロク on 5 Jul 2010 16:56
On Mon, 05 Jul 2010 15:40:15 -0500, Jane Galt wrote: > "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. > >> 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. > >> 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? > >> 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 > > 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. > > Do the transmissions of the 2002 Corollas tend to develop problems? I've > noticed a slight sound from it, when turning corners sometimes. As Ray says, sounds are hard to diagnose. What kind of a sound is it? Do you know what a bad CV joint sounds like? |