Question about 2002 Ford SVT Focus

2 Answers

2002 Ford Focus 2.0l SOHC running on 3 cylinders

Thought it just needed a tune-up because it was running ruff. So, new plugs new wires, oil change ( no water in the oil ), changed the fuel filter as well. After plugs and wires I added a 1/2 bottle of fuel injector cleaner (note: the guy at the parts store picked out the stuff and I asked him if he was sure because the cleaner said it was for diesel motors, he said he was). Ran ok for a couple of hours and then it started to run like **** again but even worse. Checked the plugs and wires again and found #3 cylinder wasn't firing properly. Changed that plug and wire again. No improvement. If I pull the #3 wire the car runs the same. Good plug and wire. I'm wondering if it's the distributor coil or a clogged fuel injector. The OBD code I get is P1311 Lack of Upstream Heated Oxygen Sensor Switch - Sensor Indicates Lean - Bank No. 1. And lastly if you stand behind the car while its running it smells like burning oil.

Posted by on


2 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

I had this problem too exept I have no clue what parts or blah b;ah blah. I just know that my coil pack was getting fried.burnt out because my wires were bad. The mechanic I went to was a moron because I took the car to him 3 times and he kept saying it was the coil ad kept replacing it. I took it to my uncle and he said my wires were in horrible shape and when this is the problem it fries your coil making your car run like a lawn mower! Well all i did was replace my wires and the car ran great! Well I hope this helped..

Posted on Mar 26, 2009

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 5 achievements.


    An expert that has over 500 points.


    An expert whose answer got voted for 20 times.

  • Expert
  • 184 Answers


Posted on Jan 14, 2009


2 Suggested Answers

  • 2 Answers

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

A 6ya expert can help you resolve that 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.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017

  • 7353 Answers

SOURCE: 2002 mitsubishi galant;which code would it be for

well thats a good question. the sensor may be ok and your engine is running lean, or the sensor is bad............its possible that its bad, but I would want it checked by a qualified repair shop first, you dont want to replace parts because you THINK they are bad, that just costs you even more money. The upstream is located in the bottom of the exhaust manifold. if its lean found out why..... vac leak?

Posted on Sep 23, 2009

Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

I have a 2002 ford focus. I have changed the

check the mass air flow sensor. its just after air filter in tube usually.

Sep 16, 2014 | 2002 Ford Focus

1 Answer

Misfire p0303

Check wiring harness around and including plug to the coil pack. Also check fuel pressure with vehicle running. I'm not sure of the specs but, Iit should be around 35 to 40 psi. at idle, and 50 to 75 at higher RPM's. I've seen Fords run with a bad fuel pump and demonstrate these exact symptoms

Mar 06, 2014 | Ford Cars & Trucks

2 Answers

I have 2003 ford focus 2.0 SOHC SPI with a bad missfire

Yup, been there, done that. Found it was a bad injector. Replaced that one injector the test showed and runs great now. Check engine light should be on though because of this problem. The test will show you which cylinder is misfiring and that is the injector you change. My test showed #5 cylinder. The last # in the code read.

Mar 03, 2018 | 2003 Ford Focus

1 Answer

Only running on 3 cylinders number 2 plug keeps oiling up other 3 are fine put full set of new plugs in and ran great for 2 wks now running rough againtook plug out and cleaned it still no good wet black...

If the oil is on top of the plug, your valve cover gasket is leaking. (easy fix). If the oil is on the bottom of the plug (on the screw threads) you have a problem. It could be a burnt valve, blowed piston ring, or even a head gasket. Please let me know more info on EXACTLY where the oil is coming from. Hope this helps, James Booth

May 17, 2011 | 2002 Ford SVT Focus

2 Answers

I just got a 2002 Ford ZX2 in a small town...and it runs very rough...He said he changed the plug wires and sparkplugs, changed pcv valve, and the oil and filter.....He thought he put the wires on right,...

do you have a "service engine soon" light on?? heres the firing order from left to right>>>1-2-3-4 is the firing order. post more info for more assistance!!

Sep 27, 2010 | 2002 Ford ZX2

1 Answer

Engine wont run properly after changeing plugs/oil/oilfilter/air filter. the engine lite stays on,it wants to die,runs rough,possibly not fireing on all cylinders,its getting hot,it has water in the...

check to make sure that the plug wires are in the correct order if so check the wires to make sure that they are not fouling out if you didnt replace them with the tune up id suggest that you try that.

May 21, 2010 | 2001 Ford Focus

3 Answers

2002 ford focus is geting poor gas milage

Tune Time.
1)new spark plugs properly gapped.
2)new air filter (check every 35000 miles)
3)new fuel filter (every 35000 miles)
4)1 bottle of STP fuel treatment (red bottle) 4x a year.
5) oil and filter change (castrol or another good quality oil every 3-4000 miles.
6)proper air pressure in tires (check every 2 months
7) service transmission every 40000 miles or less.

New oil and filter
8) new plug wires every 80000 miles.

Nov 07, 2009 | 2001 Ford Focus

2 Answers

2002 ford windstar showing obd2 codes po303,po304,po305 and idiling ruff and wont run over 45 mph and has low miles, how do i fix it ,thanks sincerely mark

might be the coil pack is bad, wires, plugs, o2 sensors, dirty injectors, catalic converter ( only if you smell rotten eggs ) . cylinders are misfireing.

Mar 23, 2009 | 2002 Ford Windstar Cargo

Not finding what you are looking for?
2002 Ford SVT Focus Logo

412 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts


Level 3 Expert

79123 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers


Level 3 Expert

5677 Answers

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

Answer questions

Manuals & User Guides