98 4Runner High RPM Sputter

11-17-2009, 08:33 AM
I have a 1998 V6 4Runner that runs great up to 4000-4100 RPM (or so) and then coughs and sputters like it is hitting a rev-limiter. No check-engine light. I have replaced the spark plugs, air filter, cleaned the throttle-body, cleaned the MAF, replaced the fuel filter, and the problem continues. Anyone else had the same problem or know what to check next?

11-24-2009, 03:11 AM
What is your fuel pressure AT THOSE RPMs? It MUST be around 45 to 50 lbs. There is a fuel rail damper and regulator that also need to be checked.

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