6G Celicas Forums

I replaced the ignition coil today and that seem to have fixed the problem. It also makes sense. coming off of idle the ALT is not making full power and has a hard time supplying juice to the make spark. as the engine heated up the coil gets warm and changes resistance thus making the spark weaker than what is required, hence the stalling out. Hopefully this can help someone else in the future.

Symptoms
car stalling at operating temp and only coming off idle
car revs to redline and maintains throttle response in the upper rpm range
Poor idle

Problem
Ignition coil going bad/ overheating

Fix
New ignition coil, Dist cap, rotor buttom $80.20 @ Advance Auto

7afe 134,000 miles

the hessitation and sputter is only intermittent, It is not all of the time. wheather the car is under load or not the car will stall out. but rarely stalls to the point that the engine dies. I can't imagine the plug wired being on wrong due to the fact that they have never been removed from the dist cap and the car revs to redline once i get past the hessitation at 1200- 1500 rpm

thanks for the reply.
I think i know what you mean by jumping the terminal. how will this tell me what is wrong though?
over the past week i have narrowed down what it it not
New spark plugs.
New fuel filter.
Fuel pump works just fine.
Entire intake was removed, cleaned and checked for leaks
Throttle body was cleaned

I tood the distributor cap off today and saw that the rotor was badly pitted and slighly corroded. i cleaned the rotor and the 4 points to remove corrosion.

It seems to stall more when the car is up to temp, and it only stalls coming off idle, once i reach 1500 it will rev with great response.
What would cause a car to loose the ability to rev at low rpm but not at high rpm?

She is a '94 st 1.8 7afe. I have not had a single CEL. i know the light works when i put the key to pos 3, so the dash light is not out. i unpluged a number of things while the car was idling and still did not get a CEL. the srs fuse has been removed due to the airbags being gone.

"Little Black" started to misbehave. when i backed out of the driveway, she died, it was early so i just assumed i let the clutch go too fast. i tried to restart the car and nothing happened . Here is what i found after some extensive spark plug pulling. The plugs were shot and corroded. so i replaced them. the car started fine after the new plugs were in. but when i accelerate the car started to stall out between 1000 and 2200 rpm. foot to the floor and nothing!!! i could get up to the higher rpm range and she did just fine. there sounded like a misfire at idle. At this point i decided it was time to change the fuel filter with my thoughts being that there was a fuel delivery problem. the filter was dirty and needed to be replaced but was not the problem. I thought maybe an injector cleaning was in order, that's when i was sure that i found the problem. the entire intake was caked in carbon soot, I've seen chimneys with less soot. everything from the back of the throttle blade to the intake gasket was a thick film of black, 2 days and 1 gallon of mineral spirits later the intake was clean and all of the carbon removed. surely this was part of the problem seing that 2 of the vacuum ports in the TB were blocked. NOPE!!!! After reassembling the freshly refurbed intake and TB the car started and reved great, i removed the car from the lift and took it for a drive, great throttle response, perfect, for about 14 minutes and then the sputter and stalling started again. I could use some opinions here.

The car is an ST. It only clicks one time when i hold the key in the start possition. If I "pump" the key it will one time for every pump and occasionally turn over the engine. I'll put a good charge on the bat and see what happens.

Thanks a million for the help guys.

SIUformula

When i try to start my '94 ceilca i just get a click every time i try. I think this is the solenoid. or the relay. I'm just not sure where either of these are located in the engine bay. If someone could kindly post a pic or a good description I would appreciate it very much

Thanks