1985 Toyota 4Runner

1985 TOYOTA 4RUNNER
81,500 MILES • 4 CYL • 4WD • MANUAL
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WINTERS.R
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my 85 4runner will start up right away but it has no power, it idles around 400 rpm. when i push on the gas the rpms rise slowly. i gave it a tune up and replaced o2 sensor,mass air meter, throttle posion sensor and checked to see if there was a vacuum leak. satill runs the same. what could the problem be?
Feb 13, 2008 at 9:56 PM
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RASMATAZ
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Check for an excessive backpressure in the exhaust system to rule out the catalytic converter and also the fuel pressure
Feb 14, 2008 at 5:45 PM