CK5
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2000 Astro 4.3 Vortex Problem

Missed that part. It would depend on where the rig is trying to fire sync wise.

Gotta remember these things are bank to bank correction, not individual cyl. Some are not even bank to bank. Fuel trims can make it hard to spot unless a poppet is just dead. Trims are just bank average. 14.7+14.7+14.7 has the same average as 14.7+13+16.4. Scary part is that average is all good to an ECM. Pulling plugs and reading would give you a better idea on where the issue is close to. You should find a lean plug next to fat. The lean is usually where the problem is with broken web.

Just plain ol' mean of you to suggest that I go out and pull all the plugs on an Astro Van.4/3 to look at them.

But it looks like that's my last decision-maker here as there's nothing the ECM see as out of bounds. Ugh! I hate pulling plugs on any Van..... Astro or not!

Update: I see Team208 just posted a new thought.
 
I was working on a leaking crank sensor once, and just decided to replace it. That opened a whole new hornets nest of problems.

And WHY do these problems happen when you're working for free - in a snow bank - outside - on cardboard (the farmer's creeper)

Seems the old sensor was happy with the engine and vice versa, but a new one somehow was in the wrong position.

It took me days to get it working again.
In the snow.
Free.
Cold
Free.
Numb fingers
Free.
Cold wrenches.
Free
Wet.
Free
On my back.
Free
On a farmer's cardboard creeper.
Free
Did I mention I was wet?
I was.
Free too.​
 
I didnt say it was the sensor.... LOL. Ended up being the crank moving around too much.

Uh huh - the crank was stable on this one though. It just didn't like the new sensor and I wound up sealing the leak and just re-inserting the old one to make it run again. I had had a couple of Toy Blazers with V6s having this trouble before. So I knew it existed.

I honestly tried to understand what the new unit - and I got three new replacements to try - why a new unit would not work.

To this day I do not know what happened but the owner's wife baked a lot of nice cookies for me to eat while I was in the snow, on my back (I'm not going through that again).



Ever run into the Ford Gen II diesels with the CMP that got torn up and the factory said it was the owner's fault? Turned out that the cam was floating back and forth in the block, and it wiped out the sensor when the magnet on the cam gear would hit it.

The factory wouldn't confess that they didn't bother to put the cam thrust bearing in the engine for, er .... expense reasons.

No fear - they just blamed the owners anyway and offered a ring-shim kit at the owner's expense to move the sensor away from the floating cam gear - which worked sometimes.
 
Well boys and girls - I found it! It was a bad pressure regulator on the side of the injector assembly.

I know. I know. I know.... I shouldda replaced the whole injector thingy - but remember that I'm old, cranky and gotta see for myself! Besides, it's MY money I'm spending here and this job is a NET-LOSS on my books.

And I am NOT a 501(c)3 [see footnote #1] charity. But --- even so, I will buy a new Phase Two Version Injector from a certain someone here on the site.

Anyway: The PR had to deteriorate in a big way for it to be a more consistent and obvious problem. Since this was not regular and predictable - it drove me nuts.

Well .... not really nuts ----> I just suffered mightily from my wife saying: "OK big time retired mechanic - can't you fix my car or is this the 'For Better Or Worse' part that I bought into?

Huh?

I refuse to be humiliated by SWMBO. (She Who Must Be Obeyed).

I had another good day today in spite of SWMBO too - I towed a 1.25WD [see footnote #2] flatbed hay truck out of the mud; I had to do it twice really, As soon as I got home he called me again. $50.00 x 2. SWMBO might see that money. I'll tell her

Then I diagnosed a 1999 K2500 with a bad fuel pump and an aftermarket flatbed conversion over the tank! Yuck. Next week for him. $75.00 diagnostic fee - applies to the repair. SWMBO will not see that money. Don't tell her

I had to cut the door hinge out of a 2001 Dodge (that hurts my fingers to even type! DODGE - yuck!) and weld in a backing plate in the door pillar and then rehang the door. $200.00 + $25.00 materials. Hooray for crappy Dodge sheet metal hinge points! SWMBO will not see that money either. Well, maybe $50 or so.

Monday I have a John Deere coming in for a transmission repair and a bad hydraulic pump for the PS.
Can you say: "$ $ $ $" ? SWMBO will not see that money. Don't tell her.

I'm too busy for being retired! I also make a lot of money for being retired. Good - it goes into my fishing fund which is a NET LOSS too.I buy a LOT of lures.

Then - here's the best part ---> I get a new total right knee replacement on the 21st. I'll be down for - oh, only 36 to 40 hours or so, then back out to splitting the rest of my firewood.

What's that, you say? I'll be down for longer than 36 to 40 hours?​

Well - I can't be down longer than that ----- 'cause the world will stop spinning if I don't get up at 4AM and kick start it to make it go 'round!!!

___________________________________________________________________________​

FOOTNOTES

  1. The most common type of US tax-exempt nonprofit organization falls under category 501(c)(3), whereby a nonprofit organization is exempt from federal income tax if its activities have the following purposes: charitable, religious, educational, scientific, literary, testing for public safety, fostering amateur sports .
I qualify as a Personal Non-Profit Organization on several point there:
  • I am a very religious and reverent person.
  • I am in a constant learning phase of personal education - which I am going to take with me to my grave.
  • I'm totally into the physical laws of the universe - GRAVITY is a law I obey: I never drop a beer!
  • I can spel reel gud, so literacy is a big win/win here too!
  • I am constantly making sure that my truck wheels don't fall off, it won't roll over and that the brakes work: I am working for public safety - it's a calling.
  • Changing ball joints is an Olympic Event - and I deserve a Gold medal!
However, I did a great big digression - back on topic. (but as it's MY post and I'm2 the OP - I can do what I want to it. Neener! Neener!)
2. The common mistake in buying owning or driving - and getting a new "4Wheel Drive" domestic truck
or SUV is just an assumption that it really has all 4 wheels providing propulsion at the same time.

What happens is this: Fred Q. Milquetoast goes down to his ___________ (insert a major vehicle manufacturer's name* here - any one will do since they are all the same in this regard) and he buys a shiny new 4WDTruck/SUV, and promptly decides to load up the kids and his woman (there's always a SWMBO in the mix) and tries out his new toy.

He's all grins and tickles!

The big eye-opener is when he drives offroad to a trail head campground and in some unseasonal wetness, slips into 4WD and proceeds to sink his truck/SUV up to the door handles because only one of the front wheels --- then one of the rear wheels --- alternately spin and just dig in deeper and deeper.

SWMBO is negatively impressed, all the time yelling that they are going to die and then the ravens will peck out her eyes. There might be bears or coyotes in the mix too. We'll see.............

You see ----> Fred has 1.25WD. Not 4WD!

Don't be a Milquetoast - have the salesman jack up the vehicle and make sure that all the wheels turn in gear. He'll like you for asking him to do that - since life as a salesman is mundane and boring, so you're just really helping him see some fun in his chosen occupation.

* see below: (in no particular pecking order)

VEHICLES SOLD AS 4WD, BUT REALLY AREN'T
  • Ford
  • GMC
  • Chevrolet
  • Isuzu
  • MoPaR (Dodge to you Millennials!)
  • White/Volvo
  • Checker
  • Peugeot
  • Isetta/GoGoMobile/JAP
  • Borgward
  • Jeep/Fiat/Renault/Rootes/Rolls Royce/Rover (Gawd! I almost forgot them - I really TRIED to forget them!)

There may be others, as I'm sure there are!​




..
 
So, was the regulator just leaking? Cut it open?? curious to see how it could be intermittent.
 
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