Can not depress accelerator very far, can't get over 1,000 rpm in 1998 Dodge 3500
Accelerator can be depressed a little way, but seems to be "stuck" on
something. Can not even "force" it beyond this point. Engine runs fine but
will not give more than about 1,100 rpm. Tried cleaning linkage springs with
brake fluid and then heavily lubricating w/WD40 while pumping the
accelerator. Seemed to 'break free' for about 100 miles, then got "stuck"
again. Could it be the injector?