I have a 96 with 2.3 engine. Its running rough after I drive about a mile. Idles ok most of the time. At low speed it runs ok too. It seems the worst when I get up to 35-40 mph. Then it sounds like its sucking air and loses power. I replaced fuel filter, fuel pressure regulator, pcv, and air filter, with no luck. Any opinions are appreciated. Thanks...

pull codes

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95 Ranger XLT 4x2 2.3 I4 5 speed 206,000 *dead*
96 Ranger XLT 4x4 4.0 V6 5 speed 173,000 *alive*
D35 front, 8.8 rear, 3.73 gears, limited slip rear diff

Check for vac leaks

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2021 F150 5.0 Screw

Past:18 F150 2.7, 16 F150 5.0, 14 F150 5.0, 07 F150 5.4, 03 Ranger 4.0

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