Guests - If You want access to member only forums on HSO. You will gain access only when you Sign-in or Sign-Up on HotSpotOutdoors.

It's easy - LOOK UPPER right menu.

  • Announcements

    • Rick

      Members Only Fluid Forum View   08/08/2017

      Fluid forum view allows members only to get right to the meat of this community; the topics. You can toggle between your preferred forum view just below to the left on the main forum entrance. You will see three icons. Try them out and see what you prefer.   Fluid view allows you, if you are a signed up member, to see the newest topic posts in either all forums (select none or all) or in just your favorite forums (select the ones you want to see when you come to Fishing Minnesota). It keeps and in real time with respect to Topic posts and lets YOU SELECT YOUR FAVORITE FORUMS. It can make things fun and easy. This is especially true for less experienced visitors raised on social media. If you, as a members want more specific topics, you can even select a single forum to view. Let us take a look at fluid view in action. We will then break it down and explain how it works in more detail.   The video shows the topic list and the forum filter box. As you can see, it is easy to change the topic list by changing the selected forums. This view replaces the traditional list of categories and forums.   Of course, members only can change the view to better suit your way of browsing.   You will notice a “grid” option. We have moved the grid forum theme setting into the main forum settings. This makes it an option for members only to choose. This screenshot also shows the removal of the forum breadcrumb in fluid view mode. Fluid view remembers your last forum selection so you don’t lose your place when you go back to the listing. The benefit of this feature is easy to see. It removes a potential barrier of entry for members only. It puts the spotlight on topics themselves, and not the hierarchical forum structure. You as a member will enjoy viewing many forums at once and switching between them without leaving the page. We hope that fluid view, the new functionality is an asset that you enjoy .
Sign in to follow this  
lawdog

2005 Silverado Mass Air Flow and Evap Cannister

Recommended Posts

YIKES! Got the ol check engine light and have it in to the dealership. They called and say I need to replace the Mass Air Flow Sensor and the Evap Cannister system in the fuel tank. $366.11 and $572.21 respectively. OUCH!!! Are these common problems? What else should I expect soon?

Truck has about 56,000 miles on it. Guy said the K&N filter might be to blame for the Mass Air Flow. 5.3 motor, auto tranny. Already put a new torque converter in that about 15,000 miles ago too.

THOUGHTS?

Share this post


Link to post
Share on other sites

K&n filters are killers for MAF's, because they allow dirt in, and if you think about that, it is allowing dirt in the engine as well!

Share this post


Link to post
Share on other sites

I'd try cleaning it first as well. Ditch the K&N as well.

Has the light been on for a while? Seems odd that a maf and charcoal canister would fail at the same time.

Share this post


Link to post
Share on other sites

Before you throw out a 50$ K+N try a 5$ can of Mass Airflow Sensor cleaner. It does make a huge difference even in cars that don't have a K+N in it. Besides, those trucks (and for that matter just about all gm vehicles) have problems with the MAF anyway. We stock a whole shelf of those sensors at my store just for GM vehicles. I'm pretty sure that 99% of the vehicles I sell the sensors for don't have a K+N in them.

I have yet to see any real problems with a oiled gauze filter that wasn't part of a pre-existing problem or error in part of maintnence (i.e. over oiling the filter after cleaning).

As far as the evap canister, maybe a line got cracked, kinked or busted in the removal and replacement of the tranny. I remember that those lines are kinda fragile and would be easily messed up in the heat of battle when pulling or installing the transmission. I have also seen a bad/loose fuel cap throw a evap code too, you might want to get the specific code from them to see what your up against...

Share this post


Link to post
Share on other sites

We stock a whole shelf of those sensors at my store just for GM vehicles. I'm pretty sure that 99% of the vehicles I sell the sensors for don't have a K+N in them.

I would bet that 75% of those didn't really need a MAF sensor to begin with! shocked

Share this post


Link to post
Share on other sites

Originally Posted By: deadeye
We stock a whole shelf of those sensors at my store just for GM vehicles. I'm pretty sure that 99% of the vehicles I sell the sensors for don't have a K+N in them.

I would bet that 75% of those didn't really need a MAF sensor to begin with! shocked

Agreed!

Share this post


Link to post
Share on other sites

I also agree, I was going to say something but I held my tongue. Over 30 years as a mechanic, (mostly GM) and in those years I can count on 1 hand the number of MAF sensors that I have found to actually be bad. There are way too many techs that will throw one on just because there is a MAF code.

Share this post


Link to post
Share on other sites

Those where the ones about 5 or 6 years ago that would fall on there face at about 2 grand as you where trying to get on the freeway. After that episode you'll get the occasional 3.8 and 4.3 with a bad one but not very often anymore!

Share this post


Link to post
Share on other sites

Its the piece that goes into the airbox, from the airtube coming from the throttle body. Remove it, locate the little coiled wire spray brake clean on it, or lightly rub it with a q-tip that is wet with brake/carb spray, then reassemble.

Share this post


Link to post
Share on other sites

Not to steal your thread, but i have a 1999 silverado with the 5.3 that falls flat on its face when getting on the freeway sometimes. i do have the k&n filter and intake kit. would that be a MAF problem for me?

Share this post


Link to post
Share on other sites

You would need to bring it in to a dealer to be flashed if it indeed needs it. I'm not sure but possibly if you bring in the VIN number they could look it up and see if it has already been done. Not sure about that part though.....I would first clean the MAF as was suggested before doing a flash update anyway.

Share this post


Link to post
Share on other sites

A flash update will change how the vehicle performs dramatically. My own truck had a flash done and it fixed problems with the abs brakes, transmission shifting and overall performance. It is something that should be checked into once in a while, its amazing how many updates were done to my truck when I had it flashed. I bet there were about 8 problems that were corrected when I did that.

As said above, you will need all the vehicle info, VIN and what the problem is specifically.

Share this post


Link to post
Share on other sites

there are no codes that pop up and th echeck engine light isn't on. so how would the dealer know what the heck is going on whern theres no codes?

Share this post


Link to post
Share on other sites

They would first try and duplicate the problem. Once they get an idea of what the problem is experience takes over. Monitoring scan tool data while the problem occurs will give more clues. Further monitoring of specific components will help narrowdown the possibilities even more.

The "magic computer" still does not exist. Although a code will give clues it still will not pinpoint the source of a problem. There are many times I'll have a check engine light on with a misfire (for example) where I wont even look at the scan tool until I physically find out what is causing the missfire. Then I'll check the codes and investigate further if need be.

I had a car that would not crank over. No codes, no power to the starter "s" terminal. Traced it back to the pcm not grounding the starter relay. The customer wanted a printout from the computer I used to figure this out. He was absolutely convinced that there was supposed to be a printout no matter how many times I explained that there was no computer and I had to use a multimeter and wiring diagrams to figure it out.

Share this post


Link to post
Share on other sites

Airjer you mean your shop didnt buy one of those scan tools that tell you what part to replace? Those have been an available option since obd2. LOL

Share this post


Link to post
Share on other sites

the problem is that it happens intermittently. i never know when its gonna "fall on its face", there are no warning signs. and i hate taking stuff in because i can usually figure it out myself, but this time i can't. I'm gonna take the k&n system off tonight and clean the MAF and see if that will eliminate the problem.

Share this post


Link to post
Share on other sites

Airjer you mean your shop didnt buy one of those scan tools that tell you what part to replace? Those have been an available option since obd2. LOL

I'm getting closer! I'm thinking about getting the new Snap on Verus.

Share this post


Link to post
Share on other sites

well, thanks for the replies guys, a $7 can of MAF sensor cleaner and a little of my time on Saturday seems to have cured that problem, no more engine lights. I did have the evap cannister fixed as I don't want my gas tank collapsing but I think I saved or at least held off the need for a $350 MAF sensor that doesn't seem broken in the first place...

Share this post


Link to post
Share on other sites

Its amazing that 7 bucks would save so much more money. Glad too see that it worked. You kinda wonder if they would even replace that part or just clean it out.

Cleaning that sensor should probably be done every time the air filter is changed/cleaned. My talon gets it done once every six months or so just to keep the problem from happening.

Share this post


Link to post
Share on other sites
Guest
This topic is now closed to further replies.
Sign in to follow this  



  • Posts

    • This furnace has 2 pipes. The larger pipe about 4" is the air intake is supported through ring #29. The smaller pipe inside the larger pipe about 2" is the furnace exhaust connected through the larger ring #30 and screwed to the raised portion of ring #29. My furnace a vintage Hydro Flame Convection with dual direct vent, needed no power, and used a pilot light. Had the identical 2 pipe direct vent as yours. I built 2 rings similar to your drawing. Had 2 major issues: 1. Anytime the wind exceeded 20 mph, my pilot light would blow out even when the furnace side of my house was parked to the leeward side due to wind eddies.  2. At the exhaust cap which was about 1 3/4" from the side of the house would scorch the side surface above the cap and the moisture from burning Propane (1/2 pt. per 10#) would freeze on and below the exhaust when temp went -10 or below. Second year I re-designed using the Pipe Cap photo 1 from Menards for under $10. I cut off the bottom half at the black line and cut a hole on the outside flat surface for the exhaust pipe. This was my fresh air intake. Also filled the inside of the cap with a disassembled expanded metal filter from a motor home stove top exhaust filter.  Photo 1   Secured it to my house and ran the exhaust pipe through the hole in the end. Attached the exhaust pipe to a 2" x 3" aluminum gutter down spout used as a chimney. Photos 2 and 3. Totally solved my issues. You may also find a similar cap to photo 1 for the exhaust instead of the pipe. Most of the caps I was able to find had a 4" connection point so you would need to modify to 2" or whatever size you exhaust pipe is. How ever you do it, cover all openings with a screen to keep the Mud-daubers out as they love burned propane orifice area to build there nest.  Photo 2 & 3
    • sure looks like YHBB.  open fields and swamps close by? They like to hang out where the RWBB do.  Cannon SX30IS is pretty cheap online. 35 power zoom. good for still shots.   
    • Going to bait tomorrow with fryer grease, bread, dog food, cherry frosting, peanut butter, soft candies, raw white sugar, and popcorn. I am throwing everything at them tomorrow, hopefully the bears like the variety!
    • I don't know about that but I will certainly not write him off, if he can be a steady vet I will be happy. 
    • That's a great chicken recipe duff, but that steak n corn get my vote!! 
    • I was gonna say my yard has been thick with juvenile birds the last few days, always harder to ID birds this time of year. Had an albino something or other with a flock of birds, not sure I've seen an albino bird before. And just had a sharp shinned hawk hanging out on the branch above the feeders.  But I feed ALL of the birds......love them raptors. I will say the cowbirds around sure tolerate the dog or I getting pretty close to them.    
    • Had a decent trip.  We fished the evening of Aug. 9-Aug. 15.  Had 2 pretty good days, 2 bad days, and the rest were just so-so.  Dad, Uncle, and Grandpa don't like getting up early anymore so we usually outdrink the fish at night and sleep in mornings.   We have slowly been learning how to consistently catch fish on this lake.  The local guys don't provide any information and neither do the guys that have been making the trip for 20+ years.  Can't say I blame them much, but would have shortened the learning curve for us a little bit.  We found a bay a few years back that we can catch 10-16" walleye all day in, just a shallow weedy bay pulling spinners.  Usually get enough eyes' for dinner and then go search the reefs, shorelines, and islands for bigger fish.   I think we finally dialed in on some bottom bouncers and have 2-3 spots were we can go and most likely catch fish with the chance at some big ones.  1oz to 1-1/2oz BB with leeches or worms work the best on these spots.  2 spots are reefs topping out at 9-10fow and the other spot is a little flatter, with access to some shallow weeds.  We also deep troll suspended fish some evenings and don't catch a lot, but the ones we do are bigger fish.  We found iwe caught more fish when we were running and gunning.  Fish a spot for 20-30 minutes and then move on until we found some fish.  This kind of stinks for Grandpa but he understands we can't catch them if they are there and active. Biggest of the week was 26 1/4" walleye with 20-25 eyes' over 20".  I think I had 2 -25" and also a 37" pike the last evening.  Really fun time and scenery with the family.  Looking forward to next year and searching more of the lake.
    • Not a cowbird. We have several around here and they are generally dark-black grey and brown. The pictured bird almost looks as though it could be an immature yellow headed blackbird. Cowbirds are quite reclusive and we have been surprised they come out to our feeders, but they have become pretty regular customers. Like the deer that graze in the front yard. Last night we had the buck, doe and twin fawns and even though we talked softly to them they did not spook,  but seemed to simply acknowledge our presence on the deck and continued to feed. And of course, as usual, the black squirrels are gathering all MY walnuts!  darn.....I just can't win. The chipmunks eat my strawberries, deer eat tomato plants and squirrels eat my walnuts. I'm left with this old bottle of Beefeaters, a small bottle of vermouth and a few olives in a jar.  Things are tough out here in the wilderness.
  • Our Sponsors