• Welcome Visitor! Please take a few seconds and Register for our forum. Even if you don't want to post, you can still 'Like' and react to posts.

Teach me about fuel trims and such...


Dirtman

Former Middleweight Moss Fighting Champion
Joined
May 28, 2018
Messages
19,304
Reaction score
13,326
Points
113
Location
41N 75W
Vehicle Year
2009
Engine Type
2.3 (4 Cylinder)
Transmission
Automatic
2WD / 4WD
2WD
Total Lift
It's up there.
Total Drop
It's down there.
Tire Size
Round.
My credo
I poop in the furnace.
More than once I've worked on a vehicle where there is a CEL and before even scanning it I popped the hood to find a aftermarket cold air intake with no provision for the fresh air side of the PVC system to connect so the owner just left it off. Put a nipple on the intake tube, hook up the line and no more CEL.
 


bobbywalter

TRS Technical Staff
TRS Event Staff
V8 Engine Swap
TRS Technical Advisor
TRS Banner 2012-2015
TRS 20th Anniversary
Ugly Truck of Month
TRS Event Participant
Joined
Aug 9, 2007
Messages
23,470
Reaction score
4,668
Points
113
Location
woodhaven mi
Vehicle Year
1988
Make / Model
FORD mostly
Engine Type
V8
Engine Size
BIGGER
Transmission
Automatic
2WD / 4WD
4WD
Total Lift
sawzall?
Tire Size
33-44
My credo
it is easier to fix and understand than "her"
Yeah Gump

Dirtball is right.
 

Dirtman

Former Middleweight Moss Fighting Champion
Joined
May 28, 2018
Messages
19,304
Reaction score
13,326
Points
113
Location
41N 75W
Vehicle Year
2009
Engine Type
2.3 (4 Cylinder)
Transmission
Automatic
2WD / 4WD
2WD
Total Lift
It's up there.
Total Drop
It's down there.
Tire Size
Round.
My credo
I poop in the furnace.
Hey! I'm a man! Not a ball!
 

Uncle Gump

Token Old Guy
TRS Event Staff
TRS Forum Moderator
Supporting Member
VAGABOND
TRS Event Participant
Joined
Sep 17, 2018
Messages
13,944
Reaction score
13,430
Points
113
Location
Ottawa IL
Vehicle Year
2006/1986
Make / Model
Ranger/BroncoII
Engine Size
4.0L SOHC/2.9L
2WD / 4WD
4WD
My credo
Lead follow or get out of my way
Right about what? That it will set a code?
 

Uncle Gump

Token Old Guy
TRS Event Staff
TRS Forum Moderator
Supporting Member
VAGABOND
TRS Event Participant
Joined
Sep 17, 2018
Messages
13,944
Reaction score
13,430
Points
113
Location
Ottawa IL
Vehicle Year
2006/1986
Make / Model
Ranger/BroncoII
Engine Size
4.0L SOHC/2.9L
2WD / 4WD
4WD
My credo
Lead follow or get out of my way
Looks like I may have to eat my words on this one...

I was confused because the metered vacuum leak from the PCV doesn't change volume if the fresh air tube is connected or not. What changes is this fresh is now not metered with the fresh air tube disconnected. When you bypass unmetered air past the throttle plate... vacuum leak.

I realize the error in my ways.... sorry dirtball.

Bobby... you always make me think harder.
 

adsm08

Senior Master Grease Monkey
Supporting Member
Article Contributor
Ford Technician
TRS 20th Anniversary
Joined
Sep 20, 2009
Messages
34,623
Reaction score
3,613
Points
113
Location
Dillsburg PA
Vehicle Year
1987
Make / Model
Ford
Engine Type
4.0 V6
Engine Size
4.0
Transmission
Manual
2WD / 4WD
4WD
Tire Size
31X10.50X15

G8orFord

Well-Known Member
RBV's on Boost
Joined
Mar 31, 2019
Messages
814
Reaction score
803
Points
93
Location
FL
Vehicle Year
2001
Make / Model
Ford Ranger
Engine Type
4.0 V6
Engine Size
4.0 SOHC S/C
Transmission
Automatic
2WD / 4WD
4WD
Total Lift
0
Total Drop
0
Tire Size
Just the right size to touch the ground.
Makes sense, I guess. Thanks for the replies.
 

Sponsored Ad


Sponsored Ad

Staff online

Member & Vendor Upgrades

For a small yearly donation, you can support this forum and receive a 'Supporting Member' banner, or become a 'Supporting Vendor' and promote your products here. Click the banner to find out how.

Truck of The Month


Shran
April Truck of The Month

Recently Featured

Want to see your truck here? Share your photos and details in the forum.

Follow TRS On Instagram

TRS Events

25th Anniversary Sponsors

Check Out The TRS Store


Sponsored Ad


Sponsored Ad

Sponsored Ad


Amazon Deals

Top