2001 windstar w/P0171 & P0174 - Ford Forums

Donalee312 · 04-23-2008, 00:08

My check engine light came on and I took my van to AutoZone and got a reading showing P0171 & P0174. My nephew replaced the MAF and 2 02 sensors, but the light is still on. A coworker told me the light will take 1-2 weeks to go off after replacing these sensors. Is this correct? I need to take the van for inspection soon?

Thanks

thefonz · 04-23-2008, 03:55

I would go ahead and have the codes cleared. This will get the light to go off, but it will take several driving cycles before it will pass.

jeffrey.boyles · 05-05-2008, 20:44

Here is the fix. The air intake plenum has loosened up. Take the upper air intake plenum off and tighten the lower one. You may even want to replace the gaskets while you are at it ($120.00 from autozone). Too much air gets into the intake and gives false readings at your sensors. The fix is easy, takes about 45 minutes.

nbjovo · 05-08-2008, 17:31

2000 Ford Windstar (Codes 171 and 174)

That is your problem go and clean out your EGR ports. Buy the parts from y2kford they are great and shipping is great too talk to Kenny.