Jump to content

Stalling 8.1L

CCDUAL

Recommended Posts

CCDUAL Enthusiast

CCDUAL

Posted
Posted

Last week I was driving the truck, just for couple minutes when it stalled going down the road. I was not coasting, but regular driving. And today I drove to the end of my street, when I got to the stop sign it was hesitant. It felt like a carburated car flooding. Then I get to the gas station about 1 mile down and filled the tank. Truck would not start. I cranked for several minutes and no start. waited about 15 minutes and tried again, fired right up. What the hell is going on? I do not even have a check engine light on. the truck is an 01 with 47K and is completley stock, except for Borla catback.

Haulin' 8.1 Enthusiast

Haulin' 8.1

Posted
Posted

It's the crankshaft sensor, you need a new one. If you do some searches here and on the HD forum using my name (Haulin' 8.1) and (crank sensor) you'll find all the information you need to located it and replace it yourself.

 

Vernon

CCDUAL Enthusiast

CCDUAL

Posted
  • Author
Posted
It's the crankshaft sensor, you need a new one.  If you do some searches here and on the HD forum using my name (Haulin' 8.1) and (crank sensor) you'll find all the information you need to located it and replace it yourself.

 

Vernon

 

 

 

 

 

Thanks for the advice. I was about to replace the PCM. I changed the crank trigger sensor and the problem went away.

Haulin' 8.1 Enthusiast

Haulin' 8.1

Posted
Posted

Glad it helped. Just in case you didn't pick up this in a search there's something else you need to do now with your new Crank Sensor. Goto the dealer or a competent auto diagnostics shop (like mine :chevy: ) and have a "Crankshaft Variation Relearn" test performed. It simply gets your PCM and new sensor on the same page so there's no confusion between them at times. I've seen it clear up a rough idle and increase fuel efficiency so there's something to it.

 

Vernon

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Latest Articles

  • Posts

    • Atlas
      OCI, not when but why?

      By Atlas · Posted

      On the subject of OLM, Gm's OLM tool may be more "informed" than others brands. I recall OLM's in mid-2000's Chrysler products literally counting down a set number of miles. That's all the OLM appeared to be.    I would actually expect GM to be able to explain the parameters that their OLM takes into account from a high level. No, I would not expect them to disclose their software coding or data analysis around their parameters.   So we're talking about two different topics, so to continue the subject on the other one, I'd be curious to know how much "standard particulate matter" in fresh oil is able to be filtered at first start by a fresh oil filter. How much particulate matter is enough to "matter"?   I.e. how much of a "lever" do we think this equates to (variability in particulate content, in fresh oils, between different makes/brands, some which filter less, and some that filter more).   We can say that more particles = more wear = shorter engine life as a logical statement and use that data with a little marketing to scare people into selecting a more refined/filtered oil. Using a similie, is this like deciding to forego two alcoholic drinks in a lifetime because we're worried about the potential impact on lifespan? Are there numbers which translate the ISO test results into a quantifiable increase in wear for a given engine/use case?
    • chris21
      Brand new to this forum. Questions about re-gearing my 26’ HD

      By chris21 · Posted

      I'm pretty sure it doesn't actually recalibrate the speedometer it just changes the wheel speed sensor inputs to the computer. The truck still thinks it has stock tires.
    • asilverblazer
      OCI, not when but why?

      By asilverblazer · Posted

      I apologize, I missed this post, at risk of going off CURRENT TOPIC.   I'm not saying it is BS, I'm questioning how much information is being held back. GM is NOT going to spell out exactly every parameter in the algorithm. Liability, intellectual property, etc.    I'm not naive enough to believe that it is as simple as revolutions, coolant temperature, miles, time; are you?    I don't do irrational either, and boiling the OLM down to four simple values that I could code in an afternoon (I'm not a coder) is irrational - unless it suits your agenda to ignore it. 
    • BDS my HD
      Brand new to this forum. Questions about re-gearing my 26’ HD

      By BDS my HD · Posted

      Chris 21 I appreciate your constructive response. !!  😉😉😉   The 6.6 is gas.  Correct me if I’m wrong but by recalibrating the speedo you’re correcting the shift points of the transmission on these trucks.?.
    • newdude
      Brand new to this forum. Questions about re-gearing my 26’ HD

      By newdude · Posted

      That is a huge misconception.     Bigger does not always equal safer.  Modifying does not make it safer either, with exceptions.   Think of this.  Your truck in stock form is capable of emergency maneuvers, proper stopping distances, its handling is designed around the factory wheel/tire packages, etc.   37s and a lift?  Now you've affected your braking distances, handling and ride control.  You've raised your center of gravity higher.  Your front visibility is now obstructed more than stock, same for your rear.  Does it look cooler?  Yes.  Does it now work as good as it did from factory on road?  NO.       As for my mention of exceptions?  Say you had a sedan or crossover.  They typically come with all season tires.  If you swap out for a performance all season or a summer tire, you improve your car by lowering its stopping distance (better braking because of traction) and improve the handling (regular and emergency) of the vehicle.  That is an actually improving modification.  My old 2019 LD 1500, I ran UHP all season tires on 20in wheels in a factory offered size.  It improved all aspects of how it drove over the Duratracs it came with from the factory in the stock 18" tire.  

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...