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Ranger-Forums - The Ultimate Ford Ranger Resource
Ranger-Forums Technical Engine Forum
2.3L & 2.5L I4 Tech
DOHC - 2.3L Duratec / Mazda L Engines
DOHC - 2.3L Duratec / Mazda L Engines
Discussions and Topics specific to the Duratec 4 cylinder engines
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DOHC - 2.3L Duratec / Mazda L Engines
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2.3L temperature/thermostat question
pubtime
on Apr 21, 2009
Feb 23, 2026
by
AyyZeeKY
13
34,287
Using 2.3 Duratec in another vehicle - need help!
farna
on Jan 15, 2026
Feb 12, 2026
by
farna
6
288
2.3 Idler Pulley
kf4ayw@gmail.com
on Dec 16, 2025
Dec 16, 2025
by
kf4ayw@gmail.com
0
241
2.3 Breather Hose
William44
on Dec 10, 2025
Dec 10, 2025
by
William44
0
180
Engine Replacement Recommendations
ryon
on Oct 11, 2025
Oct 11, 2025
by
ryon
0
403
Replacement Valve Cover, 2003 2.3L DOHC
d-wlf
on Sep 2, 2025
Sep 2, 2025
by
d-wlf
0
264
Where the heck is the DPFE sensor on a 2.3L Duratec Ranger?
KingOfMercia
on Aug 29, 2025
Aug 29, 2025
by
KingOfMercia
0
345
2.3L Head on a 2.5L Block
Mediasvi
on Dec 20, 2021
Aug 16, 2025
by
DaveHow
24
16,404
P0171 System too lean. Help!
calebegner64
on Feb 11, 2024
Aug 9, 2025
by
caymanbluelongranger
2
2,634
Which belt to run for AC delete?
Justin HS
on Feb 3, 2023
Aug 2, 2025
by
Rangercycling
4
8,221
High/hanging idle between shifts and almost stalling with AC on.
Geographer
on Sep 8, 2022
Jun 6, 2025
by
bikermiker
3
4,757
2.5 Duratec 3.0 Vulcan swap
justin30513
on Apr 9, 2025
Apr 9, 2025
by
justin30513
0
290
P0171 Code Keeps Reoccurring
KingOfMercia
on Mar 13, 2025
Mar 13, 2025
by
KingOfMercia
0
451
2.3DOHC intake manifold
erdriftwood
on Oct 4, 2023
Feb 28, 2025
by
KingOfMercia
2
2,140
New cylinder head issues
DallasProuty
on Feb 21, 2025
Feb 21, 2025
by
DallasProuty
0
317
Gas Gauge and Engine temp Gauge stopped working
guido Rocks
on Feb 19, 2025
Feb 19, 2025
by
guido Rocks
0
445
2008 2.3 Duratec camshaft friction washers?
TechNO
on Jan 26, 2024
Feb 12, 2025
by
TechNO
2
1,255
2.3 Performance mods
(
1
2
)
Austin2.3
on Oct 7, 2007
Jan 14, 2025
by
Sharky408
37
81,356
No power After Crank
GluConnoisseur
on Jan 6, 2025
Jan 6, 2025
by
GluConnoisseur
0
435
Misfire at idle and under load in drive foot on brake
guido Rocks
on Nov 15, 2024
Dec 13, 2024
by
guido Rocks
2
725
Timing cover bolts
Basschasers
on Nov 3, 2024
Dec 12, 2024
by
Basschasers
2
1,218
What damage did I do, forgot the special tool while busting crankshaft pulley bolt
Sparky-WIshItWas
on Dec 10, 2024
Dec 10, 2024
by
Sparky-WIshItWas
0
678
'92 8 sparkplug swap to a SVO with turbo
BumpSide67
on Nov 5, 2024
Nov 5, 2024
by
BumpSide67
0
448
Liter tick question
earnellgiovante
on Oct 18, 2024
Oct 18, 2024
by
earnellgiovante
0
648
Cylinder head studs
C07
on Oct 15, 2024
Oct 15, 2024
by
C07
0
407
Crazy codes...
cdavis50
on Sep 22, 2012
Sep 29, 2024
by
Lil_red_98ranger
1
2,133
O2 sensors..
coyttl
on Jul 17, 2015
Sep 27, 2024
by
eearle26
18
35,905
The duratec 2.3l do's and dont's and tuning
(
1
2
3
4
5
)
tbone3366
on May 29, 2020
Sep 2, 2024
by
Poncho2003
114
72,731
09 ranger rear main seal ?
guido Rocks
on Aug 30, 2024
Aug 30, 2024
by
guido Rocks
0
756
Melted Vacuum Line
kmbkk
on Aug 30, 2024
Aug 30, 2024
by
kmbkk
0
570
Ranger 2.3 Duratec catback diameter
leninxr
on Aug 25, 2024
Aug 25, 2024
by
leninxr
0
534
What are these and where do they go?
Amiguel6
on Aug 21, 2024
Aug 21, 2024
by
Amiguel6
0
615
2004-2006 2.3 Wiring Diagram (HUGE pics)
04blackedge
on Nov 29, 2008
Aug 1, 2024
by
Lordofweird
2
70,095
2011 Duratec/Mazda engine 120K Rear Gear Lube
OLDUDE
on Jul 15, 2024
Jul 18, 2024
by
OLDUDE
2
574
P2004 IMRC replacement engine install / wrong intake manifold?
Elfexia_Motors
on Jun 11, 2024
Jun 11, 2024
by
Elfexia_Motors
0
904
Can't Find an Intake Manifold
Bowgie
on Sep 26, 2022
May 7, 2024
by
loward
16
14,198
P0442 P0171 Need to Pass Emissions
AspiringRangers
on May 5, 2024
May 5, 2024
by
AspiringRangers
0
647
Radio and Wipers not working
AspiringRangers
on Apr 22, 2024
Apr 24, 2024
by
AspiringRangers
2
717
Rod orentition
Pritchett
on Feb 29, 2024
Mar 1, 2024
by
Pritchett
2
849
Piston rod orentitio
Pritchett
on Feb 29, 2024
Feb 29, 2024
by
Pritchett
0
963
2003 2.3 ranger high rpm and brake binding.
FadedDragon
on Feb 26, 2024
Feb 26, 2024
by
FadedDragon
1
838
Duratec power mods
24clartm
on Jan 11, 2024
Jan 28, 2024
by
JimIsbell
4
1,779
Ford 2.3L DuraTec Rebuild
(
1
2
)
Mediasvi
on Jun 7, 2020
Jan 24, 2024
by
Mediasvi
43
44,517
2.3/2.5 duratec clutch strength VS 250-300HP
Crazychris
on Jan 11, 2024
Jan 11, 2024
by
Crazychris
0
747
2003 2.3L Ranger suddenly started idling rough
(
1
2
)
lemmy
on Nov 26, 2011
Dec 28, 2023
by
bannywanny2005
29
92,944
2003 Ranger Water Pump Replacement - WOW
mschubel
on Aug 3, 2020
Dec 19, 2023
by
lahix30
5
10,325
Locating Vacuum Line Inputs
PaulMurphy8714
on Jan 23, 2023
Dec 15, 2023
by
eljuannonly
3
16,138
Is This Rod Knock?
FiremanBob
on Nov 21, 2023
Nov 21, 2023
by
FiremanBob
0
926
2001 2.3 Rear main seal replacement
chuck_dungus
on Aug 9, 2023
Nov 19, 2023
by
Sparky-WIshItWas
4
4,546
TIP for stuck shifter wedge bolt
Sparky-WIshItWas
on Nov 19, 2023
Nov 19, 2023
by
Sparky-WIshItWas
0
619
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