Question about 1999 Ford Windstar

2 Answers

1999 ford windstar 3.8 eng miss

Scanned fore codes has a po171& po174& po302..code po171 is bnk 1 lean..po174 is bnk 2 lean..po302 is cyl 2 misfire...changed plugs cleared codes test drive. re set same codes..noticed misfire accures from1350 rpm-1650 rpm. does not mss befor or after.i believe ther may be tsb on this issue.. any ideas..

Posted by on

  • Bruce Thomas Mar 18, 2009

    OK. I havea 200 Winstar, had an engine light come on , I borrowed a code reader from a freind. Within 10 seconds the code came up saying PO-174. I looked in the book and found the code . It statted (engine lean right bank).



    I looked into this problem on this site and found some advice 99% of the time it's a vacumn hose problem. Check the hoses to the PCV valves.

    Sure enough it was a vacumn line / hose off on the back side of the air intake cowling. Plugged it back on . Reset the code . Problem gone.



    Check the vacumn lines first before you go to an expensive shop.



    The kid at the local quick change oil shop in my town changed out the cannister air filter on my last visit. Most likely the line came off at that time. CHEERS goodluck

×

2 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Remove the plenum take out injectors have them rebuilt change your plugs should clearup problem.  
ps if you have blowby problem could come back in a few months of driving.

Posted on Jun 01, 2009

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Po171 po174 code


Lean bank 1 and bank 2 , and throttle actuator system fault. Check reason for lean codes 1st, vacuum leak(s), air inlet boot and hoses, or low fuel pressure / clogged filter. Repair as needed then clear codes and recheck .

Jan 09, 2014 | Cars & Trucks

1 Answer

1998 Ford Contour 2.5 litre, 30,000 km. Started cold after sitting for a day in -20C temperature, and idles for little while then quits, and smells like gas. Idle speed fluctuated and surged up and down...


PO171 and P1131 point to lean codes on bank PO174 and P1151 point to lean code on bank PO305 is missfire on cyl 5

the lean codes is probably a vacuum leak or maybe a MAF sensor is bad or dirty

missfire is dependant on engine if a V10 it may be a coil actually pretty likely on the modulars not uncommon thats for sure
sorry forgot to add that its says missfire on #5 cant remember if that one is the first on the left or last on the left facing the engine vacummn leak could be those dang auto hubs got it stuck in the mud and they did not engage I need to buy some new ones took them apart to clean them out this summer

Dec 16, 2013 | 1999 Ford Contour

1 Answer

Hi I hve 2 codes PO171 PO174 on 1995 windstar what do i need to do


Those codes indicate your Windstar is running lean so you'll have to find out why. A couple of things to check are a restricted fuel filter or a vacuum leak.

Jun 06, 2011 | Ford Windstar Cars & Trucks

2 Answers

Help on finding out wind star coads PP0171-/-P074-/-P0401


first PO171 o2 bank 1 s1 lean PO174 o2 bank2 lean
PO401 cyl 1 misfire
when an engine misfires the oxygen sensor will read the oxygen from that cyl sensor doesnt read fuel so every misfire is a air pump to diagnose we have to fix misfire first check the coil wires and plugs for cyl 1 use spray bottle with water run engine hot at idle spray wires with water if enging runs rough shakes or stalls then replace the wires dont spray with to much water if the wires are real bad you may not be able to restart engine

try this first once fix misfire clear codes and drive it

plz comment vote reply if you need more help

Jan 17, 2011 | Ford Windstar Cars & Trucks

1 Answer

Generic code PO171 system 2 lean bank 1 generic


This can be caused by a faulty mass air flow sensor

Jul 06, 2010 | 1999 Ford Taurus

2 Answers

2001 Ford Windstar, check engine light has been on for a while, but started flashing last night. It ran out of oil in 1 month's time. Brand new transmission 1 month ago, they told us that it had lean...


if the light is flashing it most like hasly some sort of misfire or converter failure, p0171 and p0174 is lean bank 1 and 2, replace you upper and lower plenum gaskets, while they have they off have they replace your ignition coil, plugs and wires, windstars are known for 2 things, lean codes,(plenum gaskets) misfire(bad ignition coil)

Jul 09, 2009 | 2001 Ford Windstar

1 Answer

1995 Windstar OBD II showing codes PO340, PO171, and PO174


Hello;
With those codes, the first place I would check is the fuel pressure. Also check the fuel filter and replace it if you haven't already. Then clear codes and recheck. Even if your fuel pressure is with in range it still may not push enough fuel to operate your vehicle.

Jan 15, 2009 | 1995 Ford Windstar

1 Answer

1999windstar missing prob


check the pcv valve vacum lines for a leak a vacum leak will set 171 174 codes. lift the hood with engine running and listen for a air leak , check all vacum lines if no vacum leaks can be found then clean the mass air flow sensor by spraying carb cleaner directly on it for about 5 seconds. in other words take the air filter cover up and spray down the tube that leads to engine. shine a light down hose first and see if u can see the mass air flow sensor so u can get a direct hit

Jan 13, 2009 | 1999 Ford Windstar

Not finding what you are looking for?
1999 Ford Windstar Logo

Related Topics:

1,255 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts

yadayada
yadayada

Level 3 Expert

60769 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21949 Answers

Fordexpert

Level 3 Expert

5331 Answers

Are you a Ford Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...