Original Post earlier today:

"My 90 Montero has left me stranded again. She turns over just fine but when I remove one of the spark plug wires while trying to start herà.no spark. Then I removed the short wire to the coil, still no spark. What is the resistance of the coil? And what is the input voltage to the coil and where does it come from? Are there any other checks I can do to isolate this problem?"

I recieved an outstang reply to my question so I went to check everything. It checked OK so I actually started the Montero. But as she got up to operating temp, she started missing badly and then she went for another couple of blocks and quit again. I tried to start it but it turns over fine and tries to start. It like it is missing ,missing, then it will sputter like it wants to start and dropps out again.

So the coil seems to be good as does the input voltage. I wonder what is causing this stopping. It just came on all of a sudden. Any more ideas would be very helpful.

Oh yeah, how do I check the Power Transistor and the ECU with limited tools? If there is another topic started on these please refer me to the link.

Thanks
Pat <img src="/forums/images/graemlins/confused.gif" alt="" />