2002 Corolla plugs
in [Toyota]
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From: Jane Galt on 10 Jul 2010 17:39 =?iso-2022-jp?q?Hachiroku_=1B$B%O%A%m%=2F=1B=28B?= <Trueno(a)e86.GTS> wrote : >> >> 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? Actually found the problem. We bought the car used a few months ago, with 114,700 miles. I took it to the mechanic to look at first. Dont know if he checked the oil ( they since fired the guy from this shop, for missing things like this ) but I assumed that any car broker selling a used car, and the way they had this detailed, would have new oil in it too. May have been a wrong assumption. They just checked, now at 118k miles and the oil was below the bottom of the dipstick, which was why the light was coming on at times and we were hearing slight rattling sounds when braking hard, accelerating hard or turning corners hard. The problem is, the car passed emissions by about half the standard allowed, doesnt smoke and there's no oil in the driveway. SO either the previous owner didn't change it in a long time and the broker didn't check it, or we got a problem. My mechanic says he checked it on the rack and it looks like some kind of plate on the back of the engine may have a slightly leaky seal, but it's not a head gasket or anything. I'm guessing the previous owner just quit changing it for awhile. <sigh> But my mechanic ( I QUIT dealing with Midas and now have an honest neighborhood mechanic ) said to bring it back in next week. He wiped that plate area clean and wants to see if it gets oil on it again. Are there any characteristic oil leaks in the 2002 Corollas, anyone know? -- - Jane Galt
From: Jane Galt on 10 Jul 2010 17:46 "Ray O" <rokigawa(a)NOSPAMtristarassociates.com> 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. Nope. Both are 1.8L engines, but I assume the 93, being a wagon, weighs more. The 02 gets a few MPG more than the 93. My foot is the same on both, I'm a light footed driver. But I woulda thought the 02 would get more than 3 mPG more. When we first got the 02, the first tankful got me 34 MPG if I recall, but then it started going down some, to the 29-30 range ( could be the AC in warmer weather now ). But since finding this low oil problem ( last post - the oil had gone below the bottom of the dipstick ) in the 02, and getting the oil and filter changed, the MPG seems to be going up again. I cant for the life of me figure out WHY. How could oil affect MPG a lot? >>> 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. No, engines are both 1.8L, same foot. But I hear the 02 is a completely redsigned, more efficient engine ( you guys said ) so I'd expect more than 3 MPG more with the 02 when the 93 is a wagon? >>> 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. I'm an ET. >> >> 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. Very low oil. <sigh> -- - Jane Galt
From: Jane Galt on 10 Jul 2010 21:47 FatterDumber& Happier Moe <"WheresMyCheck"@UncleSamLoves.Mee> wrote : >> 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? > Maybe I can record it and upload it. -- - Jane Galt
From: nm5k on 11 Jul 2010 00:20 On Jul 10, 4:46 pm, Jane Galt <Jan...(a)gulch.xyz> wrote: > > Nope. Both are 1.8L engines, but I assume the 93, being a wagon, weighs > more. The 02 gets a few MPG more than the 93. My foot is the same on both, > I'm a light footed driver. But I woulda thought the 02 would get more than > 3 mPG more. I don't think there would be a huge difference. But also it will vary to the type of driving, and also things like how much air is in the tires, are the tires a low rolling resistance tire? And yes, even the oil can have an effect. I have the same 1.8 L in an 05 Corolla, and it uses energy saving oil, "5w-30", of which I use Castrol Syntec, and the car has low rolling resistance tires which is how it came from the factory. And I keep the pressure at 32 psi or so. The MPG will vary a good bit. City driving with the A/C on? Maybe 30 or a little higher if not a lot of stops. On the highway, I can get up to about 43 mpg doing 65 mph with the cruise on. A couple less if I do 70 mph. But it's pretty much a 40 mpg car on the road unless you drive like speed racer. I noticed on a Toll turnpike at a legal 75 mph, I'd get 37-38 mpg with the A/C on. But at night in TX, I can only do 65 mph. When I refill during my trip, it almost always calculates out to about 43 mpg at 65 mph. BTW, I wouldn't expect the older wagon to be much heavier. In general the Corollas of a few years back were slightly smaller than the 2000's models.
From: Ray O on 12 Jul 2010 00:46
"Jane Galt" <Jane_G(a)gulch.xyz> wrote in message news:Xns9DB19F5AE41C5JaneGgulchxyz(a)216.196.97.142... > =?iso-2022-jp?q?Hachiroku_=1B$B%O%A%m%=2F=1B=28B?= <Trueno(a)e86.GTS> wrote > : > >>> >>> 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? > > Actually found the problem. We bought the car used a few months ago, with > 114,700 miles. I took it to the mechanic to look at first. Dont know if he > checked the oil ( they since fired the guy from this shop, for missing > things > like this ) but I assumed that any car broker selling a used car, and the > way > they had this detailed, would have new oil in it too. > > May have been a wrong assumption. They just checked, now at 118k miles and > the oil was below the bottom of the dipstick, which was why the light was > coming on at times and we were hearing slight rattling sounds when braking > hard, accelerating hard or turning corners hard. > > The problem is, the car passed emissions by about half the standard > allowed, > doesnt smoke and there's no oil in the driveway. SO either the previous > owner > didn't change it in a long time and the broker didn't check it, or we got > a > problem. My mechanic says he checked it on the rack and it looks like some > kind of plate on the back of the engine may have a slightly leaky seal, > but > it's not a head gasket or anything. > > I'm guessing the previous owner just quit changing it for awhile. <sigh> > > But my mechanic ( I QUIT dealing with Midas and now have an honest > neighborhood mechanic ) said to bring it back in next week. He wiped that > plate area clean and wants to see if it gets oil on it again. > > Are there any characteristic oil leaks in the 2002 Corollas, anyone know? > > > -- > - Jane Galt Engine oil seals are more likely to leak if oil changes are neglected. Fuel economy will suffer from low or old oil. -- Ray O (correct punctuation to reply) |