20 Most Recent 2003 Toyota Corolla - Page 9 Questions & Answers

Order one from your local toyota dealer and replace it

dodge or toyota. and what ever, no engine stated, every car has engine options.

It could be a very expensive mistake. Easy to destroy certain parts of the alternator that way. But even with a bad alternator, it could still start and run-until it runs the battery down. It is cranking over, isn't it? And more worrisome is the health of your computers on the car. Begin by testing the ignition system-that is controlled by the computer. You need to check for spark on the spark plug wires. If you have a blue, snapping spark, the ignition system is probably good. If no spark, you had better have a person with a digital volt- ohm meter and a wiring diagram of the car examine it, and check the pcm. I'm not sure about that alternator fuse. Some cars even have an in line fuse, and some still use fusible links as protection between the alternator and the battery. Sorry I can't help you more. Check for spark.

If you have clean fuel and your air cleaner is not completely clogged, you're going to have to get help figuring out what might be wrong. A friend to start with, and if they cannot help, you'll need a mechanic to check out the engine error codes and determine the problem. I'm sorry I cannot help you from here.

An engine needs at least 3 things to run, gas, air and spark. Your car has electronic fuel injection and virtually everything is computer controlled. If you have good fuel in the tank, and it is getting air through the filter, about the only thing you can do is get help from a mechanic.

Hi I have 2003 toyota corolla and it has the airbag light is ON with the code error B1100 . what can I do to make disappear or fix it ? thanks

Pull the fuel sender/pump and clean with electric contact cleaner and you should be good to go

Good morning! I would suspect a defective light control sensor...see images below...Cost is approx. $150.00 Guru...saailer I’m happy to help further over the phone at https://www.6ya.com/expert/david_6df67de3b14de867

No more than 4 quarts since it is a 4 cylinder car. The best way to know how many quarts is to go by how many cylinders the car has.

seems? (why guess?) (fuses are black/white deal) 3 non related systems failed, hummmmm check fuses with a walfart $10 meter, on low OHMS> Rx1.

1. 0 ohms is good
2. infinity is bad.

fuses that look good, can in fact be bad. (hair line cracks) so test them and avoid, SEEMS? Rear glass heater is a hot wire heater. if it has 12vdc to the wire and no heat the grid is bad (open) if no 12v there, then the relay/fuse or switch to it is bad, the voltmeter finds this in 5min work. Hazard not working (but are blinkers> dead? on either sided?) again fuses. Dash board dead, (cluster) FUSES. A.C. not working (the FSM and alldata.com cover this) 1: fuse , check fuese 2: if heater fan is dead, so will be AC. 3: A/C clutch not engaging for 6 reasons , ask. for list of tests. all tests are in the FSM. BTW. my wild guess, is you are working on car that has not run right for a long time? accumulated, issues?

Check for short circuit in the wiring and relays.

the FSM for my car ,is 7300 pages long this car is about 1000? what part you want. why not buy the FSM. or login to alldata.com

wow, no engine option stated, !!!how cold is cold, we dont know, ALASKA -50F or Keywest at +80Fwhat temp sensors , there can be many.my 08 has 3 on engine,. one in tranny, and 1 in front corner for my outside airtemp option with compass.the one that counts is the ECT, and this sensos is screwed deepinto the waterjacket or in the thermostat housing, vastly hard to heat up by hand that. for sure heating up the thermal mass of and enginewith a heat lamp is near impossible. so where is it. EXACTLY.are you running old fuel.?running summer fuel?Is CEL (MIL) lamp glowing when it does run?????hard cold starts are caused by many things.Just too cold is one (spend time in alaska and see)Weak spark, check it at each you connect scan tool, early in the morn. and see if the ECT and IATread near the same and near outdoor (where car is parked) temperature. if yes, he ECT and IAT are working.once started the ECT will rise to 180F or more and hOLD; does it?if in fact you did by change warm the ECT artifically and start easythat means the engine is flooding.my guess is you didnt do diagnosis at bad start time.(spark tips soaking with fuel) leaking injectors on one or more cyl?check all sparks for flooding, not just one, if it is flooded, the operators guide says (RTM) top crank with the throttle held open and this cuts fuel and flood engine starts.other causes aplentytoo high fuel pressureleaking injectorsweak spark at any cylinder, got P030x DTC codes from scan tool?weak compression on any cyl. (sticking valves? cold) (gage it)if the engine is good, good compression that leaves 2 more.weak spark (if all spark plugs are strong cranking) then....or bad fueling, bad fueling can be.bad fuelleaking injectors, (for 3 reasons) ECU is overfueling, (ECT reads way too low than reality)The engine has 2 more sensors that can cause over or under fuelingTHE MAP or MAF, you didnt say which engine so cant guess.MAP vacuum port clogged with PCV cloud of death , gunk,.MAF hot wire coked up, clean it.the maf coked will cause lean starts.the mAP can fail 2 ways, stuck at high or low pressure.stuck high is way more common, this causes flooding.there are other reasons.1: EGR main stuck open ( bad news. it floods the intake with exhaust gases and that really wrecks combution to start any engine.2: ISC stuck closed, (flooding)or a MAF based engine with any form of induction leaks (vacuum leaks)i think i hit them all (hope), and there are tests for each case.ask.