1991 Ford F150 V8 Two Wheel Drive Automatic 163000 miles
My 1991 Ford Lariat; V8, EFI, 5.0L seems to have an acceleration problem. Even in neutral, if I rev the motor, at about 1200-1800 RPM the motor seems to " bog down". When the RPM reaches 1800+ the truck seems to run fine. I suspect the TFI-IV module in that I failed the California Smog Test in the ignition timing section. My Chilton book says there is no adjustment for BT and AT yet he says I need to have an timing adjustment so that my PPM of Hydro Carbons are within limits. Thank you in advance.
Thursday, December 27th, 2007 AT 8:11 AM