I have a 1989 2.6L 190E. I start it, and about 2 or 3 seconds later it shuts right back off. No tach operation, and the check engine light is on. I have found problems like this in the forums, but no real answers as to what it most likely is.... I have checked all fuses, everything is good, and it runs fine until it shuts off with the exception of the tach not working. PLEASE somebody help me with this one, I am at my wits end with this car. PLEASE FOR THE LOVE OF GOD, help me out!

Ok, I've done some research on the topic and I'm thinking perhaps it's a problem with the ignition module/EZL. If I jump the grn/yellow TD signal to fuel pump/tach relay to the X11 #4 (coil ground) pin, the car runs (but since the signal off the #4 is not 4 pulse/min the tach is way off). The fuel pump realay just sits and reads a pulse to stay on so the neg signal from the coil works to keep it on. I'm thinking perhaps something has shorted in the EZL since with the tach signal redirected it idles fine and runs ok up to about 2,000-2500 (? form the sound of it ?) and then the rev limiter kicks in intermittently, which it shouldn't be doing. As far as the schematics go, the car should only really have a problem with the tach reading but should run normally if just the tach section of the EZL were cooked. I'm thining the whole EZL is toast. Any body else experience anything like this? Any input would be great. Thanks in advance.

Well I think I've pretty much narrowed it down to the td section of the EZl module. I can get the thing to fire just fine with an improvised false tach signal from the coil ground so crank sensor is good and ignition section ezl is good, but no td signal whatsoever from the EZL to keep the fuel pump relay on and tach working. I will probably just chage the ezl and hope for the best. If anybody has come across this problem, please feel free to give some insight as I would like to step around buying a pricey EZL unit if there's another common cause to this problem.

Well, turns out is was, in fact, the module. I was lucky and found a car like mine in a local junkyard... a normally $275-300 part used I managed to get for $15. Put it in, tach and fuel pump work perfectly, and the car runs better than it has since I've owned it. So if anybody with an m103 looses tach signal and has fuel pump relay problems with a quick start/shutdown a good place to look is the EZL ignition module.