well hey there, new member here. Let's jump right in. I have a prob with my 86 2wd auto. trans.van
It completely bogs down with anymore than idle speed you can slowly rev it up in park, but under a load it will barely move. I've checked everything I can think of, cleaned the throttle control, new o2 sensor, new plugs wires, checked for vacuum leaks, new air cleaner seems to have good fuel pressure, no codes other than 10 for bad starter relay but I bypassed it last year with a secondary starter button, The problem has come and gone for the last month. when it goes away there doesn't seem to be a reason, when I change the o2 sen. a couple of days ago it ran normally ( it threw a o2 code, it was a bad wire) then..... it'ssssss back ! I've got some carbon build up in the tail pipe but other than that nothing. the plugs looked good just worn out. I also replaced the ecm when this problem started with a used one, all was good for awhile. so any thoughts ?