Hi, I have read several posts on this subject, but still do not fully understand. My warning horn comes on (constant sound) as soon as I turn the key on and the motor will not go above 2000 rpm (approx). At first this problem was intermitten, the motor may run at 2000 rpm for a short period and then start running at full speed. The last couple of outings it has been constant. The last time the horn did not go off but the rpms were still limited. I have read in other posts that the 86 year did not have S.L.O.W., is this so? That sure seems to be what is going on. I do not think the heat sensors are bad, once when the horn was not going off I took the heat sensors out and ground the wire to the block and the horn would come on. I tried to find the blocking diode, but was unable to identify it. I admit I am not a very good mechanic. If I disconnect the main red harness and the horn does not come on, does this tell me anything? The vro is still connected. Could this be a possible cause. I was under the impression that the horn would make more of a beeping sound if the vro was faulting. Is ther any way to permanently disconnect the S.L.O.W. function? Any advice or suggestions will be a help.
