1989 Ford Ranger 6 cyl Four Wheel Drive Manual 160000 miles
I have an 89 ranger that I just put a new engine in this truck and upon start-up had issues getting spark after several days and long hours I found some bad connections in the feed to ecm and pcm and the ground signal fixed them and got spark, truck runs now but has idle issue it will idle any where from 1500 to 2500 rpms until I rev engine over 4000 rpms once I do that engine will idle down to proper 850 rpm, I hooked my modis scanner up to vehicle and found a fault saying no tach signal to computer, I checked tach wire going to the brain and have a 7 ms pulse going through it when I hook my dvom to it. Has any one heard of anything like this and if so any ideas on how to diagnose and repair.
have the same problem?
Thursday, December 17th, 2009 AT 5:15 PM