I just finished the installation of a new 4.0 motor into my 93 LWB with 190K miles. When I start the motor the tach jumps to over 4K rpms with the engine roaring. As you can imagine, I am very nervous about this situation! I am not in a position to simply start unplugging things or making adjustments with the engine running as I fear it would fail shortly. I assume it is something mechanical, either the intake/flap or the thottle cable has a knink in it somewhere. There are a couple bends in the cable. The only other thing that I can think of is that I may have finally broke the distributor trying to remove the rotor as the shaft popped up. I have a replacemnt on order. The other thing is the stud on the back of the driver side head got cross threaded during the attempt to attacch the two ground wires/straps and I have now grounded those wires with a battery strap that is attached to a known good ground.
Anyway, I am hoping that any of you have some suggestions on what this might be that is causing a great deal of concern.
Thanks,
Mark Douglas
Anyway, I am hoping that any of you have some suggestions on what this might be that is causing a great deal of concern.
Thanks,
Mark Douglas
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