spainobain1234

Was your 4runner slower than normal? Was there a rattling behind the engine as if there was a compression leak or vacuum leak? Was there a total loss of power? continuously? My 1994 4runner has been acting up and not one person can answer my problem. If you have an answer please reply to me ASAP! I have been guessing I have a fuel regulator problem. It just got a full tune up plugs wires cap rotor fuel filter. Everybody on these forums say its the MAF sensor but it isn't the problem. It feels like it is starving for fuel. But I have used fuel injector cleaner, sea foam, etc, and nothing helped. Now I think it is a sensor. When I fully revv the engine then let go, it slowly revs to about 1500 rpm. I have to hold the throttle and it slowly revs to around 5000 rpm. when I am driving, it has way less power than my dads three identical 4runners. 1994 and 1995 stock models. I go up a hill and it will not remain a constant 30 miles per hour, instead it drops all the way to 10 miles an hour as if there was absolutely no torque. When I drive I have to push the pedal to the floor, but it will not rev above 3500 rpm. My tranny shifts great so it isn't that I can guarantee it. I removed the EGR using deep creep, and sprayed inside each tube. Anyway, I drive on the freeway, it goes 60 then can go 70mph, but suddenly BOGGS down to 50 and I press the pedal to the floor and it remains at 3500 rpms but will not speed up. I have to drive at 50 until the power comes back and the fuel flows through a little better and then get up to speed again. ITS severe loss of power and It happens every time i am on the freeway. Plus The vacuum lines behind the engine are unplugged. From the fuel canister to the back of the motor and another line that plugs into the same module behind the engine. But the Rattling from back there begins as soon as I start it up and is unbelievably loud. The sound vanishes after 5 minutes, and then whenever It deaccelerates the rattling takes place. When I use low RPM's it rattles. Please Help!

miken6570

you might want to check your fuel pump. it sound like it is going bad or it could be the connection to the fuel pump are not having go connection.