94 corolla ignition problem - Toyota Nation Forum : Toyota Car and Truck Forums

elgerahbkid · 04-06-2005, 06:06 PM

i have a 1994 toyota corolla. I'm having problems with the ignition. I know it's not the starter because it makes a starting noise. A close friend of mine took a look at it and checked the fuel pump to see it it could be the problem. The pump was ok, the he checked if there was spark on the distributor. He said there was no spark coming from the ignition coil. My question is how do i find out if the problem is the ignition coil or the ignition module. Is there a way to test them? Please let me know because i'm suffering right now i don't know what else to do.

***REN69*** · 04-06-2005, 07:54 PM

What does the car exactly do?? does it take long to start?? does it not start at all?? does the starter just sit there and click, click??

elgerahbkid · 04-07-2005, 10:14 AM

the car does not start at all. the starter works because it makes the starting sound. actually what happens is that sometimes it starts but the majority of the time it doesn't. that's why i think either the ignition coil is going out or the ignition module is. how do i test them?

Quote:

Originally Posted by elgerahbkid

i have a 1994 toyota corolla. I'm having problems with the ignition. I know it's not the starter because it makes a starting noise. A close friend of mine took a look at it and checked the fuel pump to see it it could be the problem. The pump was ok, the he checked if there was spark on the distributor. He said there was no spark coming from the ignition coil. My question is how do i find out if the problem is the ignition coil or the ignition module. Is there a way to test them? Please let me know because i'm suffering right now i don't know what else to do.

81SR5 · 04-07-2005, 11:18 PM

use a voltmeter to make sure there is power at the coil +(key on), if there is, move the + side of the voltmeter(with - side still attached to battery - ) to the negative side of the coil. Should be voltage there too. If not check coil resistance.If there is voltage there crank engine with voltmeter still atached between coil- and battery -. If voltage varies between battery voltage and 0 volts ignitor is fine,replace the coil. If voltage does not vary,problem could be ignitor, crank/cam sensor, computer, wiring.(I'd bet on the ignitor)

81SR5 · 04-07-2005, 11:24 PM

by the way, make sure you ground the coil secondary terminal with a jumper while doing the cranking tests.