To Idle or not to Idle, that is the ?

[Soundguy]

Or you lock the doors and keep a separate remote to unlock the doors with that way somebody can't just open the door and walk off with it.

Aaron Z

On my fords anyway, the factor keyless entry FOB won't lock / unlock the door when the vehicle is running. If the vehicle has the number pad on the side of the door, that WILL work however.

On my old 99F350, the lock cyl is loose, and you can simply start it and pull the keys out. lock the door. FOB still won't work.. but the key will unlock the door.

On the wifes 2014 ford, it didn't have keyless entry as an option, so we added it aftermarket.. it's FOB WILL unlock the door with the engine running.

 

[aczlan]

On my fords anyway, the factor keyless entry FOB won't lock / unlock the door when the vehicle is running. If the vehicle has the number pad on the side of the door, that WILL work however.
On my old 99F350, the lock cyl is loose, and you can simply start it and pull the keys out. lock the door. FOB still won't work.. but the key will unlock the door.
On the wifes 2014 ford, it didn't have keyless entry as an option, so we added it aftermarket.. it's FOB WILL unlock the door with the engine running.

I will have to play with that. IIRC, the wife's Yukon lets you lock/unlock with a keyfob with the engine running. I will have to check with my 2008 Taurus X and see what it does.

Aaron Z

 

[dragoneggs]

On my fords anyway, the factor keyless entry FOB won't lock / unlock the door when the vehicle is running. If the vehicle has the number pad on the side of the door, that WILL work however.

On my old 99F350, the lock cyl is loose, and you can simply start it and pull the keys out. lock the door. FOB still won't work.. but the key will unlock the door.

On the wifes 2014 ford, it didn't have keyless entry as an option, so we added it aftermarket.. it's FOB WILL unlock the door with the engine running.

I have keyless entry on my 2006 F150. Never have used it and couldn't if I wanted to... I suppose the code is in my glove compartment somewhere.

 

[aczlan]

I will have to play with that. IIRC, the wife's Yukon lets you lock/unlock with a keyfob with the engine running. I will have to check with my 2008 Taurus X and see what it does.

Aaron Z

I checked and my 2008 Taurus X will let me lock and unlock the doors with the remote while the engine is running.

Aaron Z

 

[Oldpath05]

Uh...common rail is a form of high pressure direct injection...is it not? So what causes the fuel to get past the rings and what's different about idling vs running that would change that?

That's what I dont get either and I thought fuel systems were computerised anyways so the motor ALWAYS gets the exact right amount of fuel, no more no less.

 

[Oldpath05]

Now I'm at Walmart waiting for the wife to come out, it's 7pm, single digits, long check out lines, I gave my socks to her to buy so I can go out to my 04 jeep Liberty, start it up, turn heat on and let it run, idling, and thinking OH NO, after reading this thread, I'm ruining my engine, all that extra gas running down my cylinder walls, diluting the oil and worst of all making the news people and environmentalist upset, one plus for electric vehicles.

 

[Snobdds]

That's what I dont get either and I thought fuel systems were computerised anyways so the motor ALWAYS gets the exact right amount of fuel, no more no less.

Computerized fuel delivery systems do put the right amount of fuel for the load it senses. However, if there is no load or heat being generated, the rings in the motor are not sealing as well as they should be. Then you get washout and oil dilution.

Case in point. The Ford 6.4 powerstoroke. Although the regen cycle contributed to some of the oil dilution with fuel, it can't all be contributed to it. The oil is trashed in 3000 miles because it has so much fuel in it.

 

[lilranch2001]

Must be nice to have heated seats. My truck idles a bit longer since I have to scrape my butt too.

If you wipe before it gets crusty you do not need to scrape....
Just sayin

 

[pmsmechanic]

Uh...common rail is a form of high pressure direct injection...is it not? So what causes the fuel to get past the rings and what's different about idling vs running that would change that?

All newer FI engines inject fuel at higher pressures to make smaller fuel droplets. Smaller droplets burn more completely and quicker. That all being said, you still need a hot engine to burn all the fuel in a droplet. The fuel that doesn't burn (gas or diesel) when an engine is idling runs down the cylinder walls and dilutes the oil. Oil is a lubricant. Fuel is not a lubricant.

This is why most newer engines also have longer oil change intervals. Smaller droplets = better combustion = less oil contamination.

 

[Btown]

All newer FI engines inject fuel at higher pressures to make smaller fuel droplets. Smaller droplets burn more completely and quicker. That all being said, you still need a hot engine to burn all the fuel in a droplet. The fuel that doesn't burn (gas or diesel) when an engine is idling runs down the cylinder walls and dilutes the oil. Oil is a lubricant. Fuel is not a lubricant.

This is why most newer engines also have longer oil change intervals. Smaller droplets = better combustion = less oil contamination.

Diesel fuel is not a engine lubricant, but it is a lubricant for high pressure fuel pumps. Put a little gas in a newer diesel with a hpfp and see what happens. That fuel pump will grenade due to lack of lubrication. VW had a huge issue with this. Poor quality fuel can also be to blame. There there are lubrication standards that have to be met with diesel fuel. But yes it will not lubricate your engine parts well.