Help - Toyota Nation Forum : Toyota Car and Truck Forums

bestdada · 05-15-2010, 12:28 PM

Hi i am Robert i have a 90 corolla that has a no spark problem i have replaced the dist and have checked all my powers to the comp they are all good the check engine light comes on with the key on. fuses are all good i have power to the dist coil the pick up coils are both giving me a signal just no spark please any ideas

***humanoid*** · 05-15-2010, 12:50 PM

Robert, moving your thread to the appropriate forum where you'll get more help from our knowledgeable 'rolla owners. Welcome to the Nation!

bestdada · 05-15-2010, 01:02 PM

I just joined where do i go to post my veh problem?

***SCT*** · 05-15-2010, 01:04 PM

The distributor runs off the exhaust camshaft, a timing belt runs that camshaft. It could be a broken timing belt if all your electricals are in working condition, including your spark plugs, plug wires, distributor rotor, etc. The street way to check to see if your timing belt has bit the dust, take the oil filler cap off, have someone crank the engine and observe the cam shaft that is visible through the oil filler. If it's no moving when the engine is trying to be started, your timing belt is gone. If the cam spins, recheck all the eletricals. It's possible something could've been overlooked.

(if the engine starts while you are observing the camshaft with the oil cap off, be sure your helper immediately turns off the engine. It can spew oil if it starts)

bestdada · 05-15-2010, 01:27 PM

I have cranked the veh with the dist cap off and i see the rotor moving. I had this same problem 2 years ago i got a junk yard dist and it worked. so i went back got another one it did not work so i got a reman dist i went to the toyota dealer asked a tech if it was the comp he said reman dist a not always good so i got a new one still nothing. i feel i am missing something small

Angel13 · 05-15-2010, 10:01 PM

A coil could be the problem

bestdada · 05-15-2010, 10:31 PM

It is a brand new dist. This is the second new one the first new one hda a bad coil It would be hard to belive this one is bad too

SuLLiVaN88 · 05-16-2010, 01:52 AM

how about something small such as spark plug wires?? lol did you see if you actually had spark at your spark plugs

SuLLiVaN88 · 05-16-2010, 01:54 AM

forgot to add, i would pull your plugs and see for yourself and if you havent checked them and have no sparke to the plugs then i would suspect bad plug wire.. i didnt see that you had checked that part from your post so maybe thats the problem worth a shot to check out

bestdada · 05-16-2010, 02:04 AM

I did a tune up on the car 2 days before it quit running. I replaced plugs, wire, cap, rotor and oil change. tomorrow i will start over and check all my powers and grounds and signal wires. I will also check the signal wires for the pick up coils at the ECM. I will inspect coil primary and secondary resistance fuses. A part store told me it could be a air flow sensor but i don't have one on the 4AFE motor just a baro pressure sensor should i check that to?

Angel13 · 05-16-2010, 02:59 PM

i was meaning the actual coil it self

bestdada · 05-16-2010, 05:51 PM

The coil is part of the dist it comes with a new igniter both pick up coils and coil.

SuLLiVaN88 · 05-16-2010, 05:54 PM

Quote:

Originally Posted by bestdada

I did a tune up on the car 2 days before it quit running. I replaced plugs, wire, cap, rotor and oil change. tomorrow i will start over and check all my powers and grounds and signal wires. I will also check the signal wires for the pick up coils at the ECM. I will inspect coil primary and secondary resistance fuses. A part store told me it could be a air flow sensor but i don't have one on the 4AFE motor just a baro pressure sensor should i check that to?

ya even if it was an afm problem i believe it would still start but as soon as you gave it gas it would die but thats not your case.
idk maybe it is a defective cap, i have had a brand new one that has been defective before

bestdada · 05-29-2010, 02:01 PM

I checked for codes and found a 31 vacuum sensor code. would that stop my veh from starting? a friend told me to check for injector pulse. if there is no spark and fuel then the ecm is not getting a crank signal so both wont work. i do smell fuel. i checked and in have good wiring

Rabbitbunny · 05-29-2010, 04:53 PM

How do you know you have no spark?

The 'vaccum sensor' would wildly change the fuel delivered, this could cause a no-start issue. Check its' wiring and try replacing with a known good.