Engine will not start and run?

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The Cold Start Injector, located on the intake manifold plenum, is a solenoid operated injector, similar to the main port injectors. However, the cold start injector is designed to stay open for seconds of operation rather than milliseconds. Operation is controlled by the Cold Start Time Switch and the ignition switch and takes place only at cold start, in order to aid in faster starting of a cold engine.

When cranking a cold engine, (below 60° F), the ignition switch applies power to terminal STA of the Cold Start Injector and terminal STA of the Time Switch, which grounds the Cold Start Injector and allows fuel to be delivered into the intake plenum. Fuel delivery stops when the ignition switch is released from its cranking mode and the port injectors take over all fuel delivery.

See pics 1 and 2

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Here are the testing procedures for the cold start time switch, which I suspect it the problem:

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1990 Toyota Celica L4-122 1998cc 2.0L DOHC Turbo (3S-GTE)
Component Test
Vehicle Powertrain Management Fuel Delivery and Air Induction Sensors and Switches - Fuel Delivery and Air Induction Thermo Time Switch Testing and Inspection Component Tests and General Diagnostics Component Test
COMPONENT TEST
1. Unplug connector from Cold Start Injector Time Switch.
2. Connect a voltmeter to terminal STA on the harness and ground, while an assistant turns the ignition switch to the start position (crank mode).
3. Measure the voltage while the starter is operating.

Voltage: 9.5 - 12.5 volts

4. If no voltage is present, check ignition switch and harness wiring for an open circuit.
5. Using an Ohmmeter, measure the resistance of the Cold Start Injector Time Switch.
Measuring Cold Start Injector Time Switch Resistance

Pic 3




TERMINALS: RESISTANCE:

STA - STJ 30 - 50 Ohms below 50°F (10°C)
STA - STJ 70 - 90 Ohms above 77°F (25°C)
STA - GROUND 30 - 90 Ohms

6. If not as specified, replace the Cold Start Injector Time Switch.
7. Remove Ohmmeter and reconnect the Time Switch connector.

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I hope this helps. Let me know if you have other questions.

Take care,
Joe

Other Category problem
1990 Toyota Celica 4 cyl Manual 232 km miles
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i have a 1990 toyota celica GT. now we bought a new battery and the car won't start it sounds like it is trying to but doesn't we know there is a torn in the timing belt but would this stop the car from starting and if not what else could it be. we also smell gas when we try to start it. please help

The timing belt is stripped and also you have a valve and ignition timing off-you can crank it all day and it will not start. It doesn't matter if you have spark and fuel. When you turn the key to the on position without cranking the engine over can you hear the fuel pump run in the tank for 5 seconds?

https://www.2carpros.com/articles/car-cranks-but-wont-start

Please run down this guide and report back.

Girl friend's car died suddenly on freeway and has not started since. No spark at the plugs. Cap, rotor, plug wires all test good. I have spark at the coil, Have good fuel pressure, injectors do not leak, timing belt not broken, compression good all 4 cylinders. Fuses and relays all test good. Any ideas.

Spark at the coil and from the coil to the coil plug tower on the cap? Pop the cap and crank the engine. My money says the rotor isn't turning. Probably the gear at the end of the distributor shaft broke or came loose.

Thanks, you were right. Picked-up 2 distributers at junk yard for $25 for both, pop 1 in and car started up fine. Now just have to take care of all parking tickets.

Opa! LOL. Can't help ya there!

My pleasure. Good luck.

While driving 65mph the cars check engine light came on and I had a total loss of power. I coasted to the side of the road. When turning the ignition, I do not get any belt rotation, but it sounds like the starter is running. I have a good battery. I have a good coil - within resistance ratings and I tried a new one without effect. I get codes 12 and 21 with the blinking engine light test. Code 12 is leading me to the distributor. I do get a pos. voltage 12v at the coil when in start position. My guess is the ignition control module is bad, but I don't have a way to test this (and I don't know if that would cause the car not to start?) I don't have a spark at the plugs. Would the belts move a little from the starter even without a spark?

Remove the distributor cap and observe the rotor if its turning while cranking it over if not-Check the timing belt could be broken. If its turning could be the distributor pick-up coil and ignitor to include the cap and rotor.

my celica wont fire up. i was told it may be the eps or somthing with the fuel injection system im looking for another opition

check for spark and then for fuel pressure.

i replaced the spark plug and it seems there is to much fuel being put into them

Could be a leaky injector/s, fuel pressure regulator-excessive pressure

Car starts fine when cold; however, when parked, will not start. Could this be vapor lock?

Try checking the fuel pressure-fuel pump could be weak and on its way out-also go to this walk thru link:

https://www.2carpros.com/articles/car-cranks-but-wont-start

I drove car home 1 week ago, no it has no start i have no fuel pressure or spark, i have voltage going to positive and negitive side of coil pick up in the distributor, would this cause the fuel to cut out as well?? I checked fuses and relays they are good, not sure about grounds. is it posssible that fuel pump and coil went at the same time... I wired in after market stereo as well 1 thing i noticed is the yellow 12 constant wire switched off with the ignition may be related by ground somehow?????

Fuel pump requires ignition spark signal to operate. You need to find out why it is not sparking. It could be a failed timing belt, igniter, ignition coil or wiring.

Check engine light blinks twice stops and the blinks four times.

Hello, I'm Danny.

That sounds like you might be having diagnostic code 24. That has to do with communication between the air temperature sensor-meter and communication with the ECU. I've attached 2 pictures below that show how to test. Hope this helps and let us know what you find. Thanks for using 2CarPros.

My car is 3 sge first generation. The car will start fine once cold and drive until it reaches operating temperature, once it does it will just die and wont start until it is cold again. The gas tank is half with fuel, the spark plugs are brand new, the coil is brand new. also, today i tried starting it cold and it only cranks. I checked for sparks at the plugs and there was none. Where do i start?

Remove the coil wire from the distributor and ground it then crank engine over-do you have spark?

Can you please explain a little? Am i to disassemble the distributor and take the wires off the coil? And which of the two wires am i to ground?

Hello, the one going to the distributor here is a guide that will help you.

https://www.2carpros.com/articles/how-to-test-an-ignition-system

Let us know what you find

Best, Ken

Yes i have spark... Grounded the negative side of the coil with a test light to negative terminal then crank the engine and the test light blink as i crank... That's a test for the igniter i think

Yep it sounds like the igniter has failed, they had big problems with those on that car.

Computer problem
1987 Toyota Celica 4 cyl Wheel Drive Type unknown Manual 160000 miles
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I have a 87 toyota celica that just will not start..it turns over but will not start.. The CAR DOES HAVE SPARK

I have already done the following

new timing belt with correct timing
Checked fuel pump
distributor
spark plugs and wires
replaced mass air flow sensor
replaced ignition igniter
checked all fuses
replaced the battery for a new one...
New EFI relay
all the fuses have been checked and good


did the diagnostic code and i received a 5-1 for the tps or computer.... I do not know if i need to replace the computer also I am not sure if this one needs to be reprogrammed because I am replacing parts for resale shops due to the price of these parts....Most of these parts range in the 400-500 dollar range....I really need to get my car running and I really do not know what to do next..

Did all the starting problem start after the new timing belt or before? If after, double check that timing again, you may be off 180 on the placement of the distributor, then try unplugging the TPS to see if it will start without it....

the timing belt was changed before all the problems with the car and the timing was checked on the car and everything is correct.. Will the tps cause the car not to crank?

Engine Mechanical problem
1986 Toyota Celica Front Wheel Drive Automatic

I need a list of things to check as to why it wont start.
It turns over, barely almost fires, but nothing. I'm not a car person,and of course the husband can't figure it out. He's in no hurry because he HAS a working car. I'm stuck with the celica. So, I intend to prove that I can fix it. I don't have a book that has all the pictures of the parts of the engine. Please help me do this and show him up!!

start with the basics, fuses, spark plug wires, spark plugs, spark, cap and rotor, coil, igniter, compression. You can go to autozone.com and register to use their repair manual section. I found it to be an excellent, FREE, repair resource. Let me know how it goes.