I have a 93 pickup with a 22re and I was in some water and the right side of the truck dropped in a.hole and shut off. The ecm got wet so I put another one in it and it still won't run. The coil is.firing but I have no.spark coming from the distributer. I put a new cap and roter on it and still nothing. nothing on the driver side.of.the.truck got wet and it didn't get water in the intake. What could be wrong?

 

maybe the coil is firing but might not be strong enough to fire through the coil wire and/or past the gap between the rotor and cap.

Make sure you got some sort of a spark at the end of the coil wire on the dizzy side to eliminate a bad coil wire.

And double check your coil wire connection at the cap.

 

It firing at the distributer side. Once I got pulled out it cranked.back up and ran like crap for a lil while and then it cleared out and was running fine for about 30 minutes and it all of a sudden shut off and hasn't fired since

 

To make a spark, the 22re doesn't need the ecu (the ecu is needed to provide spark advance). The signal coil in the distrib provides crank position signals to the igniter. The igniter uses those to send spark triggering pulses to the coil. So your problem is most likely limited to either the signal coil, the igniter, the ignition coil, power to the coil/igniter, or the connections/grounds between them.

Check that the pos terminal of the coil is hot when ignition is on. That power comes directly from the ignition switch.

Check the resistance and air gap of the signal coil.
Check the resistance of both circuits of the ignition coil.
Here are the specs: http://personal.utulsa.edu/~nathan-b.../4onvehicl.pdf

Clean up the igniter ground (mounting bolts).

Check all wiring connections between the signal coil, igniter and ignition coil.

Also check that the high volt lead from coil to distrib isn't shorting out on something.

If all that checks out, may be a bad igniter.

Normally, the ecu starts to provide spark timing signals (with advance) to the igniter on IGT after it receives RPM signals from the igniter on NE (those are the signal coil pulses passed on to the ecu by the igniter). Once the igniter starts receiving IGT pulses, it uses them to time its spark-triggering pulses, rather than using the direct signal coil feed. The igniter then turns around and provides spark confirmation signals back to the ecu on IGF. If the ecu sends out IGT pulses, but doesn't hear back from the igniter on IGF after just a few sparks, it will stop triggering the injectors. So if the motor briefly sputters, then dies, it could be a bad connection on IGT, IGF or a bad igniter. (Briefly running, then dying could also be caused by the fuel pump switch in the air meter not grounding the circuit opening relay.)

 

OK ill try to figure it out. thanks

 

Check the ignition fuse and the efi fuse, either one will keep your truck from running.

 

I got it running. The coil was firing but I guess the spark wasn't hot enough cause I put another coil on it and it fired right up. but thanks for all the help

 

glad ya got it sorted out.