2.9L & 3.0L V6 Tech General discussion of 2.9L and 3.0L V6 Ford Ranger engines.

High Idle 2.9L 1990

Old May 20, 2024
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From: Los Angeles
High Idle 2.9L 1990

Currently at 1,500rpm idle. I just fixed some vacuum leaks (this brought it down from 2,500rpm), replaced the IAC, the O2 sensor, air filter and cleaned the throttle body (while still attached to truck).

From what I've read, the idle should be at 700-750rpm.

What should I check next, the MAF? Wiring? Alternator? Any advice is welcomed.

New to auto repair just fyi
 
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