Toyota Repair Problems? Ask a Mechanic for Answers ASAP
Hello, thanks for posting
Are you getting any diagnostic codes at all? Have you tried putting some fuel directly into the intake to see if it will stay running longer?
Thanks, ***** ***** failure shouldn't cause a complete shut down of the engine it should still run but with a misfire, have you tried replacing the coil?
It sounds like it's a loss of spark, are you getting 12 volts to one of the wires on each coil with the key on?
Pull one of the spark plug connectors and see if there is spark?
After it runs for a few seconds how long does it take to start up again?
Is there an aftermarket installed theft deterrent system?
It almost sounds like it's an engine immobilizer system fault, does it have the factory engine immobilizer system of is there an aftermarket theft deterrent system installed?
Ok, let's try this:
Put a voltmenter on the power supply wire of the #1 coil, start the engine then after it stops running leave the key on, does it still have voltage at the coil then?
Ok, don't really know where to go here with this, you have fuel pressure and it sounds like fuel is getting in to the combustion chambers, it seems to have spark, and you say the timing belt is ok and timed correctly, if the engine has all of these then there are only two things left, it's not getting any air or it lacks enough compression to initiate combustion.
Let me ask you this, before it stopped running on the highway were there any signs that something was about to happen, misfire, loss of power any noise? Or did it just stop like you turned the key off?
Did you get fuel at a station just before this happened?
It sounds like it's losing spark after a few seconds, can you verify this by pulling on of the plug wire connectors and as before leave the key on and crank it and see if spark is lost, you can an old spark plug or put a screwdriver in the end and hold it about 1/4" away from ground.
I'm trying to understand then why it won't keep running if you put fuel directly in the intake.
I didn't realize it has a separate igniter, the coil packs should have the igniter modules built in. Not sure what that is can you attach a photo of it here?
Yes we can continue when you are ready, I will check a diagram for the other wires, I know one of them is ground (maybe a problem there) and one is a feedback signal to the computer and the other a trigger signal from the computer.
Ok, it will take a bit of time.
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I stand corrected it does have a separate igniter module and that is where the problem could be.