Car Problem Reports

Ford Windstar Vacuum Leaks From Intake Area Causing Lean Condition

Ford Windstar Problem
67 Reports
Me Too

Model Years Affected: 1999, 2000, 2001, 2002, 2003

Engines Affected: 3.0L V6, 3.8L V6

Average Mileage: 115,341 mi (15,000 mi - 202,418 mi)


The Check Engine Light may illuminate with fault code P0171 and/or P0174 stored, indicating a lean fuel mixture. Our technicians tell us the left valve cover gasket, upper intake gaskets, vacuum line, and bolts may need to be replaced with updated parts to correct this concern.

  •  Rookie

    I had the p0171 code so I replaced the pcv valve I removed the check engine light. Now I have recieved the p0174 light? I hear a hiss like a leak but cant fine it. I sprayed carburator cleaner to see if the idle changes but didnt notice any change. Also there is some kind of hesitation on take off? What can it be?

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  • Visitor, , 80,000 mi

    Codes P0171 & P0174- engine runs lean, check engine light is on. Diagnosed at dealer wants $950.00. I am getting other estimates

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  • Visitor, , 3.8L V6, 180,000 mi

    leak in the vaccume, causing car to rev and jump when idoling. have to have constant pressure on the gas when idoling to stop van from jumping in place or dying.

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  • Visitor, , 94,000 mi

    Check engine light, lean codes. Purchased intake gasket kit from Advance Auto Parts. Had purchase new intake isolator bolts online, as ford has changed the design. Also replaced spark plugs and wires, as its easier to reach the plugs on the back side with the intake off. Replaced upper radiator hose because had to disconnect from lower air intake. Total cost of parts was approximately $230.00.

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  •  Rookie

    I had this same problem. Seemed like a power drop and the engine light would come on. My mechanic said the is a know FORD problem with the intake and there actually a Intake manifold kit to fix the problem. Of coarse Ford will not step up and fix the problem. The repair Cost $800 but has run great ever since. Another poor Ford design.

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  • Visitor, , 3.8L V6, 121,946 mi

    I currently have this issue, need to repair. Any suggestions?

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  • Visitor, , 129,300 mi

    Code P0171 and P0174. Cyl 1 and 4 lean. Check engine light comes on and will stay off 24-36 hours when I turn it off. Is this caused by vacuum leak somewhere?

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  • Visitor, , 3.0L V6

    got codes p0171 and p0174 so we changed the o2 sensors all 4 after that started it up ran for a little then acted like it was choking and died got another code p0134 changed that sensor again still does the same damn thing starts up then dies the more times we start it the faster it dies and runs our battery dead..

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  • Visitor, , 3.8L V6, 170,000 mi

    MIL on with codes 0171 and 0174 dies once in a while

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  • we are still trying to get it fixed

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