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2004 - 2008 Ford F150 General discussion on the 2004 - 2008 Ford F150 truck.

OMG another problem....

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Old Nov 29, 2017 | 10:42 PM
  #221  
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Yes I do put lots of miles on truck, lol I do have a scan tool in truck 24/7, and has live. So in my terms you are saying to leave code on and run it like that for a while, sometimes when I come to a light it runs fine and others it runs like crap. How and where would I tie in a oil pressure gauge thx
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Old Nov 29, 2017 | 11:06 PM
  #222  
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I did all new timing parts, plugs, high pressure oil pump, coil packs, 1 Vct on bank 1 maybe both not for sure, lash adjusters, oil pan pic up tube, might be a few parts I'm missing. So the prob I had was with Vct selenoid was not able to remove through valve cover. That's what makes me pissed, why not make it a tad larger hole to be able to change.....thx
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Old Nov 29, 2017 | 11:43 PM
  #223  
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If it is doing this 'sh#@$ty running frequently, sounds like there's little chance the problem would be gone long enough for the PCM to clear the DTC because I hasn't detected the timing error again.


But - you just mentioned (possibly) replacing only Bank 1 VCT solenoid. Now we have a P0022 ... ?? If that thing is not operating smoothly could be the source of your problem.


I'm generally NOT in favor of this Diagnostic Procedure, but in this case could tell us something. When stopped, in neutral, and idling - if it is NOT idling smoothly, rev the engine a couple of times to try to get it to stop the rough idle. If it will not, you could tap on VCT solenoids gently with a screw driver. If you can get it to idle smoothly - UNPLUG both VCTs and go for a drive. You will get DTC codes, but without PCM energizing VCTs _AT ALL_ they would stay "CLOSED" routing all oil flow into advance chambers --- if this cures the rough/ragged idle at red lights - you would have a pretty good idea a VCT is occasionally not closing the way it should.


Wonder if a set of '04 valve covers would fit on it. They got bigger VCT holes.
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Old Nov 30, 2017 | 12:06 AM
  #224  
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Yes it does get a 0022 code, I would say it does still run rough when in park but half as bad. That's is what I do slap in nutual lol. Ok I will do what you say and get back to you tomorrow evening. I heard if I get 500k Ford will give me a new engine so they can strip it down, blahablahaha
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Old Nov 30, 2017 | 09:38 AM
  #225  
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I will look at the 04 covers, or maybe someone on here knows already, thx
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Old Nov 30, 2017 | 11:36 PM
  #226  
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Ok so this is what I found out today, when I stop at lights and runs rough and give it a good peddle it settles down every time...but didn't have time to unplug both Vct selenoids yet. Thx
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Old Dec 1, 2017 | 09:41 AM
  #227  
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So would that conclude its the Vct selenoid. What's a good place to buy online and brand, so I don't get junk, thx
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Old Dec 1, 2017 | 10:26 AM
  #228  
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Originally Posted by Darren123
So would that conclude its the Vct selenoid. What's a good place to buy online and brand, so I don't get junk, thx

"Conclude"?


I just hate giving committments like that. "Strongly suggest" YES.


But there so damn many mechanical & electrical things that 'can' happen it gets to the point of the lesser of evils. (investing effort to develop more 'evidence', or just convict on part and go for it).


Point: If snapping the accelerator in neutral clears the rough idle every time - and you are getting a P0022 code regularly -, a VERY likely cause is that the phaser on bank 2 is not returning to base (no-retard) position where the locking pin inside phaser captures the phaser at base position (no-retard).


Keep in mind, The PCM commands NO-RETARD as soon as you let your foot off the accelerator. (No retard is requested below 25% engine load, or below 800 RPM).


Oil pressure is certainly adequate at the point of first deceleration to push the phaser to base position (no-retard or full advance) --- IF the VCT (spool valve) properly routes oil flow into advance chambers.


If it will idle smooth 'sometimes', the ONLY advantage of unplugging VCTs is to determine if vct's are opening and closing properly when they are commanded to under different driving conditions. To determine if maybe VCTs / Phasers are the cause of the rough idle. Realize - the rough idle COULD be failure inside the Phaser (locking pin) - in which case the procedure of unplugging VTCs would not cure.


But I 'happen to believe' your problem is Bank 2 VCT. Partly because you mentioned uncertainty about replacing it with your timing job. Unplugging procedure should narrow down the possibilities.


Good luck
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Old Dec 1, 2017 | 11:03 AM
  #229  
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Ok thx I will unplug the Vct today and see what goes on, the phasers wer all change when I did timing, so will post tonight what is what, thanks for your time.
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Old Dec 1, 2017 | 10:17 PM
  #230  
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Ok well here is the outcome, I started truck and made sure it was running smooth. Then I shut it off and went to unplug Vct on both sides, truck ran good all day. I did find it didn't have same top end power though. So what's your thoughts, thx
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