Engine will not start and run?

Tiny
GKPASI
  • MEMBER
  • 1990 TOYOTA CELICA
  • 2.0L
  • 4 CYL
  • 2WD
  • MANUAL
  • 110,000 MILES
What makes the cold start valve spray?
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Wednesday, October 16th, 2019 AT 9:43 AM

30 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,005 POSTS
Welcome to 2CarPros.

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

__________________

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

________________

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.

________________________________________________

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

Take care,
Joe
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Wednesday, October 16th, 2019 AT 8:14 PM
Tiny
KAS87
  • MEMBER
  • 1 POST
  • 1990 TOYOTA CELICA
Other Category problem
1990 Toyota Celica 4 cyl Manual 232 km miles

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
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Tuesday, December 29th, 2020 AT 9:33 AM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
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.
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Tuesday, December 29th, 2020 AT 9:33 AM (Merged)
Tiny
WALKFAST
  • MEMBER
  • 2 POSTS
  • 1990 TOYOTA CELICA
  • 2.1L
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 200,000 MILES
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.
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Tuesday, December 29th, 2020 AT 9:33 AM (Merged)
Tiny
RIVERMIKERAT
  • MECHANIC
  • 6,110 POSTS
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.
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Tuesday, December 29th, 2020 AT 9:33 AM (Merged)
Tiny
WALKFAST
  • MEMBER
  • 2 POSTS
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.
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Tuesday, December 29th, 2020 AT 9:33 AM (Merged)
Tiny
RIVERMIKERAT
  • MECHANIC
  • 6,110 POSTS
Opa! LOL. Can't help ya there!

My pleasure. Good luck.
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Tuesday, December 29th, 2020 AT 9:33 AM (Merged)
Tiny
WITOLD
  • MEMBER
  • 1 POST
  • 1990 TOYOTA CELICA
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 368,000 MILES
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?
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Tuesday, December 29th, 2020 AT 9:33 AM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
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.
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Tuesday, December 29th, 2020 AT 9:33 AM (Merged)
Tiny
THEFALLOUT2
  • MEMBER
  • 2 POSTS
  • 1990 TOYOTA CELICA
  • 150,000 MILES
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
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Tuesday, December 29th, 2020 AT 9:34 AM (Merged)
Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
Check for spark and then for fuel pressure.
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Tuesday, December 29th, 2020 AT 9:34 AM (Merged)
Tiny
THEFALLOUT2
  • MEMBER
  • 2 POSTS
I replaced the spark plug and it seems there is to much fuel being put into them
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Tuesday, December 29th, 2020 AT 9:34 AM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Could be a leaky injector/s, fuel pressure regulator-excessive pressure
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Tuesday, December 29th, 2020 AT 9:34 AM (Merged)
Tiny
2CP-ARCHIVES
  • MEMBER
  • 4,544 POSTS
  • 1989 TOYOTA CELICA
  • 102,000 MILES
Car starts fine when cold; however, when parked, will not start. Could this be vapor lock?
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Tuesday, December 29th, 2020 AT 9:36 AM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
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
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Tuesday, December 29th, 2020 AT 9:36 AM (Merged)
Tiny
SQUIGGS12
  • MEMBER
  • 1 POST
  • 1988 TOYOTA CELICA
  • 148,000 MILES
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?
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Tuesday, December 29th, 2020 AT 9:36 AM (Merged)
Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
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.
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Tuesday, December 29th, 2020 AT 9:36 AM (Merged)
Tiny
NICKY92
  • MEMBER
  • 1 POST
  • 1987 TOYOTA CELICA
  • 2.0L
  • 4 CYL
  • 2WD
  • MANUAL
  • 197,457 MILES
Check engine light blinks twice stops and the blinks four times.
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Tuesday, December 29th, 2020 AT 9:36 AM (Merged)
Tiny
DANNY L
  • MECHANIC
  • 5,648 POSTS
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.
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Tuesday, December 29th, 2020 AT 9:36 AM (Merged)
Tiny
KEMOY28
  • MEMBER
  • 28 POSTS
  • 1987 TOYOTA CELICA
  • 2.0L
  • 4 CYL
  • FWD
  • MANUAL
  • 2,000,000 MILES
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?
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Tuesday, December 29th, 2020 AT 9:36 AM (Merged)

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