it's possible. it's very possible. the OBD1 says everything is a-ok (blinky light no stops), baseline had a ton of things done.
I reset the computer
calibrated the transmission cable, throttle cable and cruise cable
cleaned injectors
new ignition minus the coil and distributor itself, 3 degrees btdc
checked air flow meter per fsm
new tps
new iac
replaced all vacuum hoses
new radiator and hoses
transmission flush
transfer case flush
zerked all fittings under the car
checked new plugs after 1000 miles and they are a beautiful brown... except 5 and 6, they look like they have never been used... not wet, just very very clean
no coolant leaks, no air bubbles in radiator during leakdown
no loss of coolant