05 Astro AWD
Awesome. Unfortunately, sometimes you do get what you pay for...
What's the part number on that delco check valve? I want to pick up a spare for when mine dies.pmou said:So the actual delco check valve solved the vent issue. I think that dorman was either defective or just useless. Not sure, but would not recommend. Luckily only a few dollars lost. Replaced the PCV hose with 1/2 ID Mishimoto "universal catch can hose" it was a bit tricky to get to slide on as it's a bit stiffer than what was on there, but it seems like it should hold up well. Thanks for all the help everyone, that one is solved. :cheers:
I actually prime'd it here: https://www.amazon.com/dp/B0016I0E42/re ... mFb54E3Q9Xtonydobbs said:What's the part number on that delco check valve? I want to pick up a spare for when mine dies.pmou said:So the actual delco check valve solved the vent issue. I think that dorman was either defective or just useless. Not sure, but would not recommend. Luckily only a few dollars lost. Replaced the PCV hose with 1/2 ID Mishimoto "universal catch can hose" it was a bit tricky to get to slide on as it's a bit stiffer than what was on there, but it seems like it should hold up well. Thanks for all the help everyone, that one is solved. :cheers:
This is a very good idea. I'll see if i can convince them to lend me their MAF real quick haha. (also i will be actually lending a hand :lol: )WinnieVan said:While you're "helping" you buddy do a lift --- take his MAF sensor and plug it into your car. Go find that huge hill and send it. On your way over to his house -- unplug the MAF, go find that hill and send it!
I had wondered about this -- as the issue seemed to go away.. however, now that i completed the lift I have noticed that the upper radiator hose is directly below (being squished by) the MAF.. I think this was less so when the engine was sitting higher relative to the radiator, but don't have a great way to go back in time and compare. I had wondered if this could overheat the MAF or something.. cause incorrect readings? I sorta threw that idea aside as I figured this would not be the first time this happened. Also, the calculated g/s that i get on the OBDII seems to have not changed, I have not tried to do any sort of live voltage reading.WinnieVan said:Remember -- the engine bay gets hot and that can exacerbate wire resistance -- sometimes everything specs out fine -- althought I suppose a live reading of the MAF would give that away.
I double checked the air box, the rubber flex hose (bent it around as well watching for cracks)... those all looked good. double checked all the connections. Air filter is new as of July (<3k miles) and looked a little dusty.WinnieVan said:Is your airbox cracked? How is your air filter? What about the flex hose from the airbox to the intake? Are you sure there aren't any holes? It could be that the MAF is/was getting caked in dirty stuff and now it is beyond repair.
Fuel trims have been what I would call minimal.. no live graphs to share at this point but in my random watching, almost always <5%, never above 10%. Have not tried to see what backpressure is looking like, I will pul the O2 this weekend and see how it runs. Is there a LAPS tool to borrow that would give a number here?WinnieVan said:How do your fuel trims look? Have an exhust backpressure reading? I don't think it could cause your MAF code -- but maybe a bad injector or plugged exhaust could be messing up the intake side on WOT pulls -- seems that would be more "repeatable".
So i replaced my PCV.. When i went to replace it, there was what appeared to be an identical valve already in there. Whether or not it should be, is another question entirely but mine definitely had one.WinnieVan said:Also -- I'd go with Leeann on this -- but after tracking down a misfire code myself -- I thought my van was missing a PCV valve... I've spoken with a few differen parts guys and it doesn't appear the Gen-III Astro has a PCV valve. :shrug:
It sure does fit in that receptacle on the valve cover -- but apparently there isn't supposed to be a PCV valve in there! I didn't have one in when I first looked and then I put one in... then I took it out again once I discovered it isn't really supposed to be there (I think).
I think this is detailed in my build thread somewhere -- but most of that thread is me being neurotic. I've learned to shut up and drive since then
Well after 57 posts and 3-4 months trying so many different things.. congrats on the hopeful fix!pmou said:Have done a few stressful drives with highway mountain passes (close to same drive as before) and have not had the code pop up! i think it's likely that the ignition coil was at least a part of the issue, and probably should have just been done with the dist/wires/plugs