I am reposting a question from the old Sor.archive in the hopes that there is some new insights out there. I have the same problem and am stumped beyond the simple fixes. I hope the experts can help: From DogBoy #1007: Sorry for the long topic title but it seems that there is a very common problem with a great deal of FJ60's out there, (mine included) and after reading this forum for several months now, I have yet to find a definitive answer to our (all the 60's owners) dilema. Here's the problem using descriptors from several earlier posts: •engine "stumbles/hesitates/sputters/stutters/runs rough/chokes out/feels fuel starved/or almost dies" under acceleration, especially in the lower RPM range of the power band. •in several cases, the engine will idle normally without problem until a load is put on the motor (starting off in 1rst and then into 2nd gear, pulling a load, or climbing a hill...). • also, many of the posts describe this as being a consistantly intermitant problem... • sometimes it runs great for a few minutes (10-20) and then starts acting up • and sometimes it will start/run/drive normally for several miles during a trip and then inexplicably run rough, and then just as mysteriously clear up for the duration of the trip. Many probable causes have been suggested in reply: • faulty carburation • poor fuel delivery system • leaky or plugged fuel filler and fuel breather tubes • clogged fuel filters • blocked air filter/air intake • faulty ignition coil/limited spark • vacume lines leaks • faulty EGR valve or other emission equipment failure • and/or potential exhaust system issue (bad cat converter, O2 sensor, exhaust manifold leak). Most of the solutions focus on a faulty EGR, with fixes including bypassing the EGR. What are your ideas? Thanks.