Question about 2002 Ford F150 Regular Cab

1 Answer

How do I troubleshoot service engine codes for 2002 Ford F-150: PO174 and PO171?

Posted by on

Ad

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Sergeant:

    An expert that hasĀ over 500 points.

    Novelist:

    An expert who has written 50 answers of more than 400 characters.

  • Expert
  • 193 Answers

This is the engine lean code. Too much air is entering the engine. Intake manifold gaskets can leak, vacuum lines get old and crack. Check the operation of the EGR and PVC valves, In short it is not easy to find the problem.

Posted on Oct 01, 2010

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Ad

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

2 Answers

Code po171


https://www.obd-codes.com/p0171

May be of help tracing the route of the prob

Jan 23, 2018 | 2001 Ford Windstar

1 Answer

2003 Ford Expedition check engine light on .Codes PO171 & PO174


This is a tough one could be mass air flow sensor ,oxyegen sensors,a fuel filter. a vacum leak, a pcv valve if i missed anything just google po 171 &174 look for fix ya this issue has been addressed many times first check the vacum lines includeing the line on the pcv valve for cracks or splits in the lines .I would do the fuel filter if it hasnt been changed in the last couple of years , if still a problem the MAF sensor if your happy with my advise please leave me with great feedback

Feb 18, 2013 | 2003 Ford Expedition

1 Answer

2003 Ford Expedition check engine codes PO171 & PO174


You should be replacing all upstream oxygen sensors,
the ones at the inlet or pipe before the converter,on all
your vehicles at 100,000 miles

Go to Rock Auto.Com & buy two & install yourself

NTK 22060 $26.79 ea

Feb 18, 2013 | 2003 Ford Expedition

1 Answer

I have a 2004 ford f-150 heritage xlt. check engine light came on and codes are po171 and po174. my book tels me its system adaptive fuel too lean (bank1and2). how should i start my problem solving?


check bank 1 and bank o2 sensor wires make sure a mouse didnt chew them up most wires are soy based and them mouses chew them and make homes in the cabin filter in stuff if not you got bad o2 sensors

Dec 02, 2012 | Ford F-150 Cars & Trucks

1 Answer

1998 ford f 150 severe pinging under load or wot conditions.also sets codes po171 and po174 lean in both banks


This sounds like the timing is not advancing like it should. Check to see if your vacuum advance vacuum line is hooked up to the distributor.

Dec 02, 2010 | 1998 Ford F150 Regular Cab

1 Answer

I have a 1998 ford f 150 just 5 min ago engine code po171 and po174 on the code reader how do i fix it


p0171 and p0174 are common issues the most of the time it is a vacuum leak check all vacuum lines have seen the vacuum line on the back of the air horn bad several times.

Sep 26, 2010 | 1998 Ford F150 Regular Cab

1 Answer

1996 ranger 4.0 codes po171 and po174 come up on the screen


Check for vacuum leaks, especially the intake manifold gaskets. If those are o.k., clean the Mass air flow sensor.

Apr 12, 2009 | 1996 Ford Ranger SuperCab

1 Answer

Check engine light with code PO171 and PO174 running lean


Just check all vacuum lnes, especially pcv hoses and if all of that is ok, it's a good chance your intake spacer is leaking. Actually the gaskets under the upper intake leak, but, it's a good idea to replace the whole spacer

Dec 04, 2008 | 2006 Ford F-150

Not finding what you are looking for?
2002 Ford F150 Regular Cab Logo

760 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts

yadayada
yadayada

Level 3 Expert

80339 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

fordexpert

Level 3 Expert

5687 Answers

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

Answer questions

Manuals & User Guides

Loading...