Those of us with widebands

[nytescion]

This is a question for people running wideband. What aft are you reading after start up. Reason I ask is cause I think I'm kinda rich on start up and I want to adjust it before I do some motor damage.

 

[tjbiker031]

I don't have a wideband, and i may be wrong, but i thought the car runs rich on start up until the engines warms up.

 

[DSM_PWR]

Exactly...

Cars will always run rich at startup to help warm up, once you reach operating temp, you should be good

 

[AWD92TalonTSi]

This is a question for people running wideband. What aft are you reading after start up. Reason I ask is cause I think I'm kinda rich on start up and I want to adjust it before I do some motor damage.

How would running rich for 3-5 min cause engine damage? My WB always reads rich at start up idle. Then goes to stoich hunting when I drive off.
Bryan

 

[matthewdesigns]

I run as rich as 11:1 for about 30sec, then it steadily climbs to stoich in about 2-3 minutes time, depending on the ambient temperature.

How would running rich for 3-5 min cause engine damage?
Bryan

Cylinder wash can occur if the car is running too rich. Too much fuel can thin or completely remove the oil film from the cylinder walls, leading to excessive wear.

 

[AWD92TalonTSi]

Cylinder wash can occur if the car is running too rich. Too much fuel can thin or completely remove the oil film from the cylinder walls, leading to excessive wear.

Makes sense but I would think that would be at mixtures of well below what any wideband can read. Almost a stuck fuel injector situation.

 

[miniturbo23]

yeah my car runs rich for a bit longer now that it is getting colder.. but as long as you are letting it warm up and not running it hard right after you turn it on it is not going to hurt your motor.

 

[1gDSM4g63]

This is a question for people running wideband. What aft are you reading after start up. Reason I ask is cause I think I'm kinda rich on start up and I want to adjust it before I do some motor damage.

How rich you running at start up?

 

[Nati0nalxCrisis]

You said 11:1? That's not going to kill your motor, especially with only 30 seconds.

 

[1gDSM4g63]

11:1 is fine, the stock DSM running richer.

 

[nytescion]

I know it's suppose to run a little rich. I'm worried about running excessively rich. I'm running in the 10's like 10.1. it stays there for maybe 2 mins and then climbs to 14.5ish.

 

[GooeyGus]

I know it's suppose to run a little rich. I'm worried about running excessively rich. I'm running in the 10's like 10.1. it stays there for maybe 2 mins and then climbs to 14.5ish.

I would say your probably fine

 

[bmx77802]

cars have what you call a closed parameter and an open parameter. when you are running on an open parameter, such as a cold start, pure gas is pushed into the engine to keep it runnig. emission controls arent used, causing a rich start up. when your vehicle gets up to operating temp, the computer recognizes this and then your vehicle is in a closed parameter.

my car used to idle fine when it was a cold start up, but then would idle at about 3k after it was warm. it turned out the coolant sensor was shot, causing the car not to close the loop (parameter). after i replaced that it ran fine.

 

[nytescion]

? ok...

 

[DSMopar]

Don't worry about what the last guy said, you're fine.... move on.

 

[bmx77802]

Don't worry about what the last guy said, you're fine.... move on.

i wasnt saying that he was having any issues. i was explaning as to why he has a rich cold start, just like everyone else.

i was just explaing an issue that i had with my car, incase anyone else had the same thing happen to them.

 

[raggedgst]

Drive it till it dies!

 

[Nati0nalxCrisis]

Yeah like everyone else is saying, your not going to wash anything by running rich for a few minutes, you'll be perfectly okay.

Pretty sure we could call this one resolved.

 

[nytescion]

i wasnt saying that he was having any issues. i was explaning as to why he has a rich cold start, just like everyone else.

i was just explaing an issue that i had with my car, incase anyone else had the same thing happen to them.

o ok i just didn't know why you were stating the problem you had. I do know why the car runs rich at at start-up i was just making sure mine wasn't running extra rich.

 

[bmx77802]

o ok i just didn't know why you were stating the problem you had. I do know why the car runs rich at at start-up i was just making sure mine wasn't running extra rich.

nahh your fine, as long as it doesnt stay that way once it is warmed up.