Engine/Transmission (1998.5 - 2002) What three cylinders does engine run on when cold?

[jeepit]

If ou read the TSB for it I think it was to avoid fuel washing the cold cynliders and something about bending valve stems. The higher rpm allows more heat, better cold ignition etc.



Plus I like to wake up the people who live behind my workplace when I leave work!:-laf



J-

:-laf:-laf

 

[TWilkening]

With normal High Idle, my egt is 300, with 3 cyl mode it stays around 500

 

[MCummings]

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Hopefully you would notice... .



Merrick

 

[B.G. Smith]

It has to run on 123 or 456 or it would run even worse and lope I think. bg

 

[obert]

153624

It has to run on 123 or 456 or it would run even worse and lope I think. bg

153624



or



153624



Thats about right.....



I like that second video, Merrick. Mine's come real close to stalling at 3-cyl cut out a few times. "Oh she's gonna quit, no, wait, waaiiiit, oh, OH!, OOOHHHHHH!!! THERE SHE GOES!

 

[B.G. Smith]

153624



or



153624



Thats about right.....



I like that second video, Merrick. Mine's come real close to stalling at 3-cyl cut out a few times. "Oh she's gonna quit, no, wait, waaiiiit, oh, OH!, OOOHHHHHH!!! THERE SHE GOES!

I think that's what I said, either the front three or the rear three.

bg

 

[obert]

I figuered that's where you were goin', but I had my mind wraped around "123" being the fire order. Just wanted to calrify.

A good machinist could make that happen though...

 

[johncameron]

real[/B] close to stalling at 3-cyl cut out a few times. "Oh she's gonna quit, no, wait, waaiiiit, oh, OH!, OOOHHHHHH!!! THERE SHE GOES!

Mine stalled a few times lst year and this week mine stumbled enough for it to go back to normal idle and start the ramp up again! THere should be more time at 1200 normal idle before it kicks to 3 cyl.



John

 

[Jdonoghue]

2-4-6

From what I've seen in the various ECU softwares I have 'disassembled', it would appear to run cylinders 2-4-6 only.

 

[blacksheepdiesel]

Cool! Thanks for 'splainin' the inner workings of the ecm Jd!!!

Godspeed,
Trent