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03' 2.3 Ford Focus / Dash light on steadly #4735643
04/22/18 08:47 PM
04/22/18 08:47 PM
Joined: Feb 2010
Posts: 2,766
Bend, Oregon
Oregoonian Offline OP
Oregoonian  Offline OP

Joined: Feb 2010
Posts: 2,766
Bend, Oregon
Just recently, the engine dash light turned on, and is on steadily . Per manual....it indicates some issue with emissions.

Before I take it to a mechanic, is there some way (without cost) to determine what the issue could be. Vehicle has 146 K on the OD.


03' Ford Focus SE(2.3L Duratec PZEV)/ 140K +
Pnz. Ultra 0w20 / Fram 'Ultra'/ OCI: 8000 +/-
ATF: Mercon V w/Lubegard Red

Re: 03' 2.3 Ford Focus / Dash light on steadly [Re: Oregoonian] #4735647
04/22/18 08:50 PM
04/22/18 08:50 PM
Joined: May 2010
Posts: 10,254
out there
spasm3 Offline
spasm3  Offline

Joined: May 2010
Posts: 10,254
out there
If there is an autozone parts store near you, they check cel codes for no cost. Its a starting place. Just reseach the codes. Do not let them start selling you parts, until you do your homework.

Some parts are ok aftermarket. Some things like egr solenoids, tps etc are better from OEM.


Last edited by spasm3; 04/22/18 08:52 PM.

13 elantra 78k 5w30 synpwr
03 chevy avalanche 83k synpwr 5w30
17 mazda cx-5 12300 miles m1 0w30
Re: 03' 2.3 Ford Focus / Dash light on steadly [Re: Oregoonian] #4739813
04/26/18 05:22 PM
04/26/18 05:22 PM
Joined: Feb 2010
Posts: 2,766
Bend, Oregon
Oregoonian Offline OP
Oregoonian  Offline OP

Joined: Feb 2010
Posts: 2,766
Bend, Oregon
A relative told me he recently had the same issue (Engine Dash Light) on. He decided before doing any expensive work on the emissions system....he would just changes out the fuel filter.

Since that is a fairly cheap thing to do....I did it. (I had previously changed the fuel filter out about 50K ago). Low and behold it worked...and cost me very little to do. NO MORE ENGINE DASH LITE ON). Vehicle runs nice and smooth again.



03' Ford Focus SE(2.3L Duratec PZEV)/ 140K +
Pnz. Ultra 0w20 / Fram 'Ultra'/ OCI: 8000 +/-
ATF: Mercon V w/Lubegard Red

Re: 03' 2.3 Ford Focus / Dash light on steadly [Re: Oregoonian] #4741132
04/28/18 01:46 AM
04/28/18 01:46 AM
Joined: Jan 2012
Posts: 143
No. California
tbm3fan Offline
tbm3fan  Offline

Joined: Jan 2012
Posts: 143
No. California
You're next issue that should come up soon will be a crack in the pcv hose behind the intake manifold. I've already had to change mine out. Several hours to do so best to change valve also.


2018 Mazda 3
2004 Buick LeSabre
2004 Focus
1998 Sable
1991 Mazda 626
1973 Polara
1968 Cougar
1968 Mustang
1967 Park Lane
1965 F-100

My toy: USS Hornet CV-12
Re: 03' 2.3 Ford Focus / Dash light on steadly [Re: Oregoonian] #4741141
04/28/18 02:23 AM
04/28/18 02:23 AM
Joined: Dec 2013
Posts: 3,999
Manchester, England
Olas Offline
Olas  Offline

Joined: Dec 2013
Posts: 3,999
Manchester, England
If you have a cheap reader, plug it in.
If you have a can of deodorant of other flammable aerosol, spray it around the engine and listen for changing rpm.


Cable ties should hold it
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