• 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.

94 4.0L Auto Error code 177


rumblecloud

Well-Known Member
Supporting Member
Joined
Mar 6, 2020
Messages
1,849
City
48022
State - Country
MI - USA
Vehicle Year
1994
Vehicle
Ford Ranger
Engine
4.0 V6
Transmission
Automatic
Total Lift
1-1/2 inch front leveling
Total Drop
Stock
Tire Size
31/10.50/15
My credo
What's the worst that could happen?
Getting a 177 error code after engine warms up - about 5-7 minutes. It is a "Continuous Memory" code that shows HEGO ((HO2S) Sensor fault/always rich.
HEGO = Heated Exhaust Gas Oxygen sensor. So what exactly is it telling me? I get that it's telling me it's running a rich mix, but why does it take 5-7 minutes to show up?

I did have an exhaust leak at the connection of the crossover to the headers, but that has been taken care of - so no exhaust issues that oould cause that. Could the headers cause it? I'm not too alarmed by it, but wold like to know more about it, causes, etc. Thanks in advance.
 

Sponsored Ad


Sponsored Ad

TRS Events

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.

Latest posts

Recently Featured

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

Ranger Adventure Video

TRS Merchandise

Follow TRS On Instagram

TRS Sponsors


Sponsored Ad


Sponsored Ad


Amazon Deals

Sponsored Ad

Back
Top