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P1171 & p1174

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Old Dec 15, 2023 | 07:12 AM
  #21  
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Originally Posted by WoldD2
Awesome, I will seal it up tomorrow. I will add some techron Additive and fill up with premium and drive around. Should I Clear the P1171 and P1174 codes, No CEL but they are pending.
Your additive and premium fuel are definitely not required, zero detectable change.
 
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Old Dec 15, 2023 | 10:15 AM
  #22  
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Originally Posted by WoldD2
I was looking around the vacuum lines on the passenger side of the truck and I noticed that the break servo vacuum line (the hose with the red clip) was easy to pull it out and was a bit loose. I’ll look around the maf sensor again. Also one of the clips that holds in the the MAF assembly snapped off, it’s right before the sensor but could that be part of the issue?
Originally Posted by Extinct
I think you found your problem, if that hose does not fit snug that could be the cause of the codes. You can seal it with silicone rtv, not exactly oem design but gets the job done. The OEM design is designed to be a quick release. It can be replaced, you have to remove the intake hose, open the throttle, and tap it out from the inside with a long tool.
To remove the brake servo vac pipe from the intake, push IN on the red ring while pulling the vac pipe OUT. If you were able to pull out the vac pipe without pushing in on the red ring the red retainer ring is likely damaged.

Once the vac pipe is removed from the intake, you can easily pull out the red ring to see if it appears damaged. I have a couple extra red rings I have salvaged from boneyard trucks. I'm happy to drop one in the mail for you if you like. No need to remove the entire fitting from the manifold unless you can see other damage to it.

If you go ahead with sealing the fitting with silicone I would first remove the red ring. Remember, there is no force trying to push the vac pipe out; it's being sucked toward the intake by engine vacuum. You're just trying to prevent extra, unmetered air from entering there. And you can go easy on the RTV. To quote an ancient TV commercial for Brylcreem, "A little dab'll do ya!"
 

Last edited by mln01; Dec 15, 2023 at 09:32 PM.
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Old Dec 18, 2023 | 09:36 AM
  #23  
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Sorry for the late reply y’all. I’ve been driving around after I sealed it up and it’s been driving without issue. It’s idling smoother and driving smoother. I haven’t driven enough for the readiness monitors to be finished but the engine seems happy.
 
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Old Dec 18, 2023 | 04:39 PM
  #24  
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Great news
 
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Old Jan 2, 2024 | 06:52 PM
  #25  
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Hello, After driving about another 50 miles no codes but Pending codes for P1171 and P1174 again, Ive noticed that the SAI doesnt come on anymore at Cold starts, I went to start it after sitting for about 4 days and it didnt start cause the battery was low, Could that be cause the battery is getting older and weak?
 
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Old Jan 2, 2024 | 10:15 PM
  #26  
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@WoldD2 Could be how old is the battery, mine will crank slow after about 5 days. But I am in southern BC.
 
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Old Jan 2, 2024 | 11:48 PM
  #27  
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Battery is from March of 2017, It’s pretty old but it passed a battery test not too long ago.
 
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Old Jan 3, 2024 | 09:55 AM
  #28  
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@WoldD2 Sounds like the battery is going out, I had one pass the test but it could not hold a charge above 12.4 after 2 days.
 
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Old Jan 4, 2024 | 01:44 PM
  #29  
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We had a discussion about batteries going flat quickly a couple of years ago (when mine went flat after a 5 day canoe trip). That is the only time it happened to me. Normally my battery is fine for a couple of weeks. The one theory someone came up with was that it the vehicle is locked with the key, instead of the fob, a computer (BCU?) doesn’t fully go to sleep. I’m pretty sure that the time mine went flat I locked it with the key, naively thinking that the opposite might be the case.
 
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Old Jan 5, 2024 | 06:45 PM
  #30  
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Originally Posted by Harvlr
We had a discussion about batteries going flat quickly a couple of years ago (when mine went flat after a 5 day canoe trip). That is the only time it happened to me. Normally my battery is fine for a couple of weeks. The one theory someone came up with was that it the vehicle is locked with the key, instead of the fob, a computer (BCU?) doesn’t fully go to sleep. I’m pretty sure that the time mine went flat I locked it with the key, naively thinking that the opposite might be the case.
I guess that could be possible, But ive used the keyhole to lock my car as the primary way to lock it for about 2-3 years as the keyfobs buttons all fell off and the little chip inside the key is messed up. But I am now leaving it on a battery tender trickle charging. But I also had the truck on Super lock if that means anything.
 
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