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Toyota Corolla
Repair Questions and Answers

Question:
1998 Toyota Corolla mileage: 140,000. When I
bought this car 3 years ago, I noticed that when the car
had been run for 15 or so minutes at regular operating
temperature, there would be a rattling sound, like
timing being off, under heavy acceleration. I've had it
in the shop several times, and gone through a couple of
entire tune-up component changes, as well as had the
timing checked each time. Everything was said to be
fine. I tried a higher octane gas, fuel injector
cleaner, almost anything suggested, and still the timing
pinging continued, but over time, has worsened. This
spring, as warmer weather has returned, the pinging has
worsened to the place that, once the car reaches normal
operating temperature, I cannot accelerate without bad
timing pinging. I've frustrated my mechanic who's even
advanced (I think) my timing to get me off his back. It
doesn't seem to matter. Am I dealing with an engine that
has run its course and needs to be changed?
Answer:
A non-functioning EGR valve is probably causing your pinging
problem. Verify that the valve opens properly and the
ports under the valve are open.
Question:
1999 Toyota Corolla mileage: 110,000. Dear Sir, thanks
for the wonderful service you are doing! I am from India
and thus know very little about the cars out here. I
bought my Toyota when it had 104,000 and had the regular
oil changes done twice since then...one at 104,000 and
then the other 107,000. Since I was doing the regular oil
changes I was never bothered to check the oil level. Now
it has 110,000 on it so I thought to have looked at it
before I go for the next oil change. I found to my
dismay, that there is no oil at all. I do not know long
it was like that and how much I drove with that
situation. So I panicked and added half a quart of oil
with the help of my friend who knows about the cars (he
has a Toyota too and it seems he adds in between). I
drove around 10 miles on that day. Next day I found that
again dry with out any oil. I do not know what is wrong.
Help me by giving your expert opinion as to what needs
to be taken care of at this point...how to fix it? Do
you think it would have caused severe damage to the
engine....I am terribly worried because I invested quite
a bit...I am a student. Hope you will help me out. Still
the car is running good. It gets started with out any
problem...runs smooth ....no smoke coming out.
Answer:
You probably have not caused severe damage to the engine
but only time will tell. We would highly suggest
checking the oil and adding more if necessary every time
you fill the gas tank. Check where you park the car over
night to see if there is oil spots under it. If you find
large quantities under the car, you will need to have a
reputable service technician take a look at it. You may
have a gasket or a seal that has failed.
Question: 2002 Toyota Corolla mileage: 88,000
I was told by some service person that it is recommended
to change the transmission fluid completely at 30,000
and the same for the fluid in the radiator. Am I getting
smoke blown up my nose? This does not sound correct. The
transmission fluid has only slight color change and the
coolant had little or no color change.
Answer: Check your owner’s manual for the
recommended service schedule. These schedules are only
guides, however. You should be aware, service intervals
vary depending on driving
conditions and habits. Depending on where you live,
30,000 may not be unreasonable. Color change is a
criteria but it must be viewed together with driving
conditions and habits.
Question: 2002 Toyota Corolla
mileages: 60,000. I have never had any problems with my
car in the 2 years that I have owned it. Then 3 weeks
ago driving down the road the engine dies and will not
start again. I had it towed to a shop. They thought that
it was the injector module. The distributor was replaced
along with the timing belt. Computer was already scanned
for codes and injector pulse code came up. Noid light
indicates injector pulse. Basically, got spark, fuel,
and compression. No run/wet plugs. Why? Any ideas?
Answer: First, verify that the
timing belt was installed properly. If okay, you may
have one or more leaking fuel injectors which are
causing your no start problem.
Question: 1990 Toyota Corolla
mileage: 111,000. I am not getting much heat out of my
heater. I recently had the thermostat replaced and a new
water pump put in. The mechanic told me that there might
be an "air bubble" blocking the flow of coolant to the
heater core. I am also finding that coolant is always
filling up the overflow bottle and spits out the hose
that exits it. Only once in a while will I get very good
heat. The heater core is in good shape and not leaking.
I have had to add coolant a few times since the new
water pump. I attribute this to the overflow bottle
sucking out the coolant and spitting it out. There are
no leaks anywhere with the cooling system either.
Answer: Check for exhaust in the
cooling system as you may have a head gasket that is
starting to leak.
Question: 1989 Toyota Corolla
mileage: 125,500. I found a little trick to help me pry
out a stubborn passenger-side drive axle from the 3
speed automatic transmission of my 89 Corolla.
Unfortunately, I'm now having trouble installing the new
one. The axle makes it past the seal and I can feel it
contact the gear inside the transmission. While holding
the drive axle in place, I slowly rotate it while
maintaining a firm and constant pressure until I feel
the spline on the axle match up with the gear in the
tranny. At this point, I try to push the shaft in, but
it just won't go. I can see no foreign objects in the
pathway. I cannot see any damaged splines. There is no
key way forcing the shaft to go in only one way. I don't
want to damage any bearings or splines etc, so I'm
reluctant to try the hammer. However, I don't have the
body strength to just push the axle back in place,
either. Could you give me any hints as to how to install
the new drive axle in my Corolla? Jim
Answer: Remove the axle assembly and
inspect the wire snap ring on the end of the assembly.
If it has been stretched out of shape and is hanging
loose, it will prevent you from putting the axle in.
Remove the snap ring and reshape it so that it is not
hanging loose on the axle assembly. Then you should be
able to install the axle assembly.
Question: 1995 Toyota Corolla
mileage: 65,500. What is the problem with my
distributor? I have heard repeating noise from it when
the engine running. I opened it and saw the rotor edge
was damaged, so I replaced a new rotor that I bought
from a local Toyota dealer. But the noise still won't go
away. I also check ignition coil's primary resistance,
which was 0.7 ohm [within specification?]. The secondary
resistance was 12.51 K ohms. Additional information: 1.
In Aug 2000, a local Toyota dealer installed new timing
belts and new starter for my car. 2. Only the silicon
portion that was connected to spark plug in engine # 1
turned to dark orange color. It was black color before
the noise symptom. 3. My car had a new distributor at
32,500 miles.
Answer: The problem with your
distributor may be a bad bearing allowing the shaft to
wobble. In addition, check the ignition system, it may
be time to replace the cap and plug wires.
Question: 1997 Toyota Corolla
mileage: 40,000. Sometimes when I turn my car to the
left it becomes very hard to steer, like it has been
turned too far but it hasn't. This is at slow speeds
like in a parking lot. It becomes almost impossible to
turn like it has no power steering. Also, you can hear a
noise like a hiss like noise from the left side. Never
happens turning right. Seems to happen the more you turn
it. Checked the fluid seems to be full.
Answer: The problem with your power
steering is probably due to faulty valves in the
steering rack. The
steering rack will have to be replaced to solve your
problem.
Question: 1997 Toyota Corolla
mileage: 150,000. My condenser-cooling fan and
engine-cooling fan both stop working at the same time. I
jump both fan motors straight from the battery and they
work. When I turn the air conditioner on the fans, they
do not come on. I check all my fuses and relays and they
seem to be all right. What else could cause both fans
not to work because the engine-cooling fan will not come
on to keep the engine temperature stable?
Answer: Check the relays again for
the electric fans because from what you describe, we
would bet this is your problem.
Question: 1985 Toyota Corolla
mileage: 165,000 km. How can I tell whether it is okay to
use Lead free petrol for my relatively old car ?. Sri
Lanka has recently introduced a higher-octane Lead free
petrol at a few outlets. Will this suit my 1985 Corolla
wagon? I have heard it said that older models actually
need Leaded petrol to lubricate the valves and that in
these cases transferring to lead free may actually cause
harm. Is this true? I think when the car came from Japan
it had a catalytic converted which got blocked with time
and had to be discarded. Does that suggest that this
engine was designed for Lead free and that it was the
use of Leaded fuel, which ruined the catalytic
converter? I ask this advice because considering the
slightly inferior type of Leaded fuel (two star) we use
here I have no doubt that the car would run better with
the Lead free alternative provided it is considered to
be compatible with the design of the engine. Some years
ago we had three star leaded on which the engine ran
beautifully. Then they replaced three star leaded with
unleaded forcing me down to two star leaded - which is
my problem! I would greatly value some clarification -
i.e. can I go ahead and pump unleaded fuel?
Answer: If your car was originally
equipped with a catalytic converter, then the engine was
designed to run on unleaded fuel (petrol). Using leaded
fuel will definitely ruin the catalytic converter. You
should be able to run the three star unleaded fuel
without any problems.
Question: 1991
Toyota Corolla mileage: 135,000. High beam
does not work. All headlights originally fine,
then high beams started flickering going over bumps, and
finally quit entirely when pulling into driveway
(moderate bump). Low beam and flash work (flash
works both with headlights on and off, as it should).
All wires, relays, fuses connectors and 2 separate
grounding connections checked with continuity checker.
Headlight switch and dimmer switch also TEST good with
continuity checker. Dealer "recommends changing dimmer
switch", but has not examined car, and seems reluctant
to take on this problem. Had I not already tested
the dimmer switch with the VOM, I would have concurred
based on the schematic (Haynes Repair Manual) alone, but
if wrong, that is an $84 mistake. Recommendations?
Answer: Assuming you did not test all
the switches and circuits under load, (headlights on) we
would recommend doing this now to pinpoint your problem.
Question: 1993
Toyota Corolla mileage: 97,500. My air
conditioning stopped cooling again. I had it charged
last year and it worked fine all of last summer. I
guess there might be a slow leak. I bought a
converter kit "R-134a Retrofit & Charging Kit" and a
canister of "R-134a Stop Leak & Detector". Since
my car was charged by a licensed auto shop, am I to
assume they used R-134a. Or is my 1993 corolla
already R-134a equipped. What are the specific steps
going about recharging my car because I never did this?
Answer:
We do not recommend recharging your own automobile
air-conditioning. If done improperly, you can
injure yourself and damage your car. A licensed
auto shop would have used R-134a if that were what the
manufacturer required. The test ports are
different sizes for the two different types of Freon.
Question:
1999 Toyota Corolla mileage: 71,000.
The key to the car has broken off in the ignition; half
of it is still inside. How can I get it out?
Answer:
You need to replace the ignition lock. A Mitchell,
Chilton or Haynes auto repair manual or a specialty
repair book for your make of car will have diagrams
showing what you are looking for. The manuals and
books give step-by-step instructions.
Click here to find out more
Question:
1986 Toyota Corolla mileage:175,000. I
recently bought this car and whenever it rains, the car
doesn't run once I have been driving for about ten
minutes. It runs fine after I put in a can of dry
gas. I was wondering if I have a hole in my gas
tank. Someone had told me that it might be the
distributor cap but since the dry gas helps I don't
think that is the problem. Will the dry gas damage
my engine?
Answer:
A reasonable amount of Dry Gas added to the gas tank
should not hurt your engine. It sounds as if you
have a gas tank vent that has somehow opened allowing
rainwater to get in. Check all vent gas hoses to
if any are split or disconnected. Also,
check the gas fill pipe for a leak.
Question:
1990 Toyota Corolla mileage: 120,000. Dear
Bob and Ken, Recently my car went down so fast. A
few weeks ago, I had my radiator, alternator and starter
replaced to keep me from being stuck in the snow.
Last week, I smelled a strong smell in my car and I
found some kind of oil leaking from somewhere behind the
dashboard down to my brake pedal. I took the car
to garage and they said the oil is from gearbox via
speedometer cable. They replaced the o-ring and
seal and charged me 85 bucks. Now here comes
the worst: It starts leaking again! Before I go
back to the garage, I am wondering if you could help me
out by answering the following questions at your
earliest convenience? This car is the only one my
wife and I are using for everyday living, so PLEASE.
1. Is the oil really from gearbox, have the garage guys
really made the correct judgment and done the right
thing? 2. According to your experiences, what will
be the next thing that will go down most likely or what
things I should specially keep an eye on as for
preventive maintenance?
Answer:
If gear oil is being forced up the speedometer cable,
there is a good chance that the small air vent in the
top of the transmission has somehow gotten plugged.
As for your second question, a good thing to check, as
preventive maintenance, would be the battery; have it
load tested.

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