What's going on everyone? This is Josh Clanton from oklahoma city, oklahoma. I have a 99 Blazer 2dr 4x4. Very nice, ill post some pics up on it later. I got some nice rims on it and a cal hood <---I think that's how you spell it. But ill post some pics up later, just wanted to say what up and nice to meet everyone and i hope to get some good information on here and just talk about blazer.

Latah, Josh

Welcome!

cowl hood. Those are cool.

Thank you guys...yeah im kinda mad at my blazer right now, i just changed the fuel pump and fuel filfter on it cuz the pump went out, and now a week after doing it, the service engine light is on and it like seems lke everytime i start it, it has been dead but it starts up on the first try just dogs down...i gotta take it to the shop so they can figure out what's wrong with it unless anyone else knows how to check the computer w/out taking it to the shop.

bump, need help asap

Autozone, Advanced Auto, etc will check your codes for free. Once you know what the codes are, report back and we'll go from there.

Ok, so if i go up to autozone, they will check my codes for free, do i just ask them if they can come check my ecu codes?

yup, basically just tell them that your SES light is on and you would like it read.

sorry i might sound stupid but what is an ses light

so autozone will do it for free,...and they will read it, and it will give me what different options are making my light come on like the fuel pump or something like that.

They should tell you the codes present and depending on the store, should be able to provide you with a printout of the codes. They can make a stab at what is causing the light just like anyone else. So long as it is a generic code (P0 - P'zero'), they'll be spot on, but if it is a P1 code, they can guess, but will mostlikely be wrong. Thats where you tell us what codes are present and we'll try to diagnose it further for you.

SES = Service Engine Soon
CEL = Check Engine Soon

ORIGINAL: swartlkk

They should tell you the codes present and depending on the store, should be able to provide you with a printout of the codes. They can make a stab at what is causing the light just like anyone else. So long as it is a generic code (P0 - P'zero'), they'll be spot on, but if it is a P1 code, they can guess, but will mostlikely be wrong. Thats where you tell us what codes are present and we'll try to diagnose it further for you.

SES = Service Engine Soon
CEL = Check Engine Soon


Okay so they will do this for free? And so once they give me the codes, it will show the ones that are faulted, and post them on here, and u can tell me what exactly they are. Man you have no idea how much i appreciate this, thank you so much.

Yup, completely free.

And, NO Problem!

Awesome thank you very much, if i posted on here at 10 o'clock or maybe a lil earlier or later, would you be on, that's central time 10 o'clock, to let me know what the codes are?

No way will I be anywhere near a computer at 10c tonight. Well, that is unless I'm dreaming about BF.com, but I'm not that far gone yet (operative word is 'YET'). Sorry. That's 11 eastern here and I've got to be up at 4am EST to get ready for work cause I've got 1st shift overtime supervision this week. Got to be in at 6am for the next 6 days, URGH!!!

Best I can do is a reply in the morning, but someone else might be on that can help out.

ok i apprecaite it, do you happen to know of a website that has the codes on it, that would show the different codes and what they mean? And if so, what exactly would i search for on google?

There's a list on here:

LIST OF CODES (http://www.blazerforum.com/m_8316/mpage_1/key_codes/tm.htm#8354)

I was trying to find the website but I can't remember what thread it was in. This should be useful though.

Actually, yeah. What I use is OBDII.com (http://www.obdii.com), specifically OBDII.com - DTC Lookup Database (http://www.obdii.com/codes_request.asp). Just give some bogus info in the fields and go on in. Type the code, specify the make, and hit search. You may have to know some of the characters from your VIN, but probably not.

Just let us know because even if you get a code for an O2 sensor, doesn't mean the sensor itself is actually bad. There are other checks that you have to go through to determine if it is a genuine code or if something else (even things seemingly unrelated) causing it.

Ok,...the thing about it, is that i have changed my fuel pump twice, in the past three weeks, first time it just went out, second time is becuase i dont think i changed the fuel fiilter and it was low on gas, so right now it has been running good, just check engine light came on, and i took of the battery cables for fifteen minutes and it is stilll on and i also got wack gas mileage, only like 220 to a full tank.

220 fo ra tank it depends on how you drive really.... my last tank i got that much but i raped on it a few time .... actually a lot,LOL But If I Baby It I Can Milk Out About 300 With Stock Air Filter i gotta Wait And C What I Get When I Throw My K&n In....

Well first off, i have to buy a new battery, the alternator is good though, so autozone machine said. And also, i had him do the ses read and it came back as only one problem as to why the ses light was on and it was code P0442 and that code as they told me was emissions, and obdii said the same thing, it said: Evaporative Emission Control System Leak Detected (small leak),..so i was told that it was something like a gas/fuel leak. So how could i actually determine as to where it is located so i can fix it? And is it only a small leak since that's what obdii said or could it be a big leak as well. I know its not where the fuel filter is located because i felt around there. So last two questions for this post, not the thread just the post, 1. How much roughly do you think this would cost? 2. Could this potentially make my fuel pump go out, because if so i dont want to drive it? Oh and one more 3. Should i drive it or keep it sitting?

Thanks alot for everyone cooperation.
Josh

My Blazer, Its in the members gallery w/more photos (http://www.blazerforum.com/albumphoto.asp?albumid=49&asortType=1&apage=1)

*EDIT by swartlkk* fixed your link

P0442 - Evaporative Emission Control System Leak Detected (small leak)

The PCM pulls a vacuum on the gas tank during its normal checks. This code simply states that during that vacuum test of the tank, it detected a small leak. Basically, this can be anything from the gas cap not being put on tight enough to a leak in the evap purge lines running to the tank. It could also be a faulty gas cap or could be caused by over filling your tank at some point getting gas into the evap purge lines.

Did they clear the codes for you? If the didn't, go back and have them clear the codes out and see if it comes back.

In the meantime, make sure that after filling up you twist the cap until it clicks atleast 3 times. Never fill up the truck with the engine running (easy way to get fuel in the purge line). And to not overfill the tank... Now on the last one there, I fill mine up to the brim each time I go to the station and I have never (*knocks on wood*) had this problem. The first two suggestions are the big ones.

You are fine to drive the truck and in fact, that is the only way to see if it goes away. This code (and its associated problem) will have no effect on the fuel pump. As far as cost, if you can do the work yourself, it may cost you the price of some vacuum line (if it is indeed a vacuum line leak) or the price of a new gas cap (if the cap is found to be at fault).

Good luck and let us know!

Alright, i appreciate all your help, am i gonna have to drop the tank to check for this, or i mean i dont even know where to start, i may have to take it to the shop.

Unless you need this fixed for an inspection sometime soon, I would just have the code cleared and go along with the suggestions I have already made. As in:


Try to make sure that you hear the gas cap click atleast 3 times when screwing it back in.
Always shut off the truck when you fill up the gas tank
Try not to over fill it


I suppose it is possible that the vacuum line to the tank was damaged in the fuel pump change and that might require the tank to be dropped again.

Here's the more thurough explanation:
SMALL EVAP LEAK TEST
The control module performs the Small EVAP Leak Test in order to detect a small leak in the following components of the EVAP system:


The fuel tank
The fuel filler cap
The fuel filler neck
The EVAP canister
The EVAP vent valve
The EVAP vapor pipes and hoses

The Small EVAP Leak Test does not test the EVAP purge solenoid for leaks.
In order to run the Small EVAP Leak Test the control module performs the following steps:

Turn OFF the EVAP purge valve.
Following the passed Weak Vacuum Test and while the EVAP vent valve is still turned ON or closed, run the Small EVAP Leak Test.
Monitor the fuel tank pressure sensor signal.

The control module monitors the vacuum trapped in the system. If the control module detects an excessive decrease in the vacuum that is trapped in the system, a DTC P0442 is set.

I'll try to find some more info for you as well, but try what I've already stated.

Oh yeah... Here's a schematic of the EVAP system:



local://upfiles/667/DAD7879532DE48569762326A45919F5A.gif

Is that the top of the fuel pump.

No, that is just a schematic of the EVAP system. The fuel tank is '9' on the image and there are other lines running off of it. One to the charcoal canister and the other (rather large one) is the fuel fill neck. One part of the system that is missing is the vacuum line that runs from the EVAP purge solenoid to the intake manifold. This line is required to pull the vacuum on the system during its check. A small leak like what was detected could be in the vent solenoid, the fuel cap, or could be a bad seal on the new fuel pump/sending unit assembly.

Who knows, but start off by making sure that you properly tighten down the fuel cap and don't overfill the tank. Have the code cleared and see if it comes back. If it does, you might have to look at buying a new gas cap.

If that doesn't fix it, more investigative work is necessary, ie. inspecting the vent solenoid and purge solenoid as well as all of the vacuum lines in the system.

If that yeilds no results, you may have to drop the tank, but try everything else I suggested first before going through that ordeal all over again.

Okay well i always tighten it w/like fifteen clicks, that might be an exaggeration, but i do click it alot so i know it wouldnt be that, umm..the one other one that it could be is just the gas cap as being bad, so ill try that tonight, and clear the codes and see how that goes. If that dont work, ill ask you how to do the other things youa re talking about because i honestly have no idea what those are lol, and i definately dont want to have to drop the tank again. I know i put all those wires back up to fuel pump on really good, so i dont think they are those, but you never know, it was my first time ever putting the pump in and back up so ya never know. I appreciate all your help, it's not everyday you find someone that takes time like that to help out some one so i appreciate it. But ill try those tonight, and have him clear the codes and see if that helps anything. If not ill definately let you know. Im trying to go the cheapest route possible because im on a fixed income. But thanks again, and oh yeah go check my blazer on the photo gallery, i love it, i just took those pics last night also. Ill be posting some up of day time as well. And when it's clean.

One other thing im thinking it could be is that whenever i first put the fuel pump in, i was low on gas and didnt want to kill the car while i was filling it up so i left it running while i filled the tank up, and i filled it up almost over filled it probably, so i know that it could be that, and one other thing, on the actually gas tank neck part that goes up to where you put the gas tank on, there is that like hose that comes off of the neck about an inch away and connects back to the gas tank as well, i heard that had something to do w/the air or something, and that was really loose when i put it on, so that could be it, i hope not because i definately dont want to have to drop the tank again, and i know it might be that for the simple fact that it doesnt have a clamp on it, and i had to force it down on there. So you think that could be what's going on with

Well, anything that has to do with the sealing of the gas tank can be suspect. The smaller tube you spoke of is so the main filler neck doesn't get air locked and spew fuel back out at you. It is actually called the 'vent hose'... Anyway, there should be a clamp on both the vent hose and the filler tube. That right there could be your problem. The proceedure for changing the filler neck and vent hose assembly does not include dropping the tank so it should be fairly straight forward. Not to mention that you don't even need to disconnect the vent hose to put a clamp around it. Click on the pic at the bottom for a look at a 4 door filler neck arrangement. '1' on the pic is the filler neck ground strap and '2' is the connection between the filler neck/vent hose and the fuel tank.

Anyway, I try to help out whenever I can. I need to stop doing it when I'm at work though... Gonna get in trouble sometime...
local://upfiles/667/6E79152C07CD4E4CAF7DBAC4FD039EEA.gif

mines actually a two door, and it does have clambs on the actual neck but on that part w/the air in the neck that one does not. So ill check everythign you said hopefully tonight, if my girl still isnt mad at me, cuz we got into a fight, and if so ill let you know how it goes, ill go to autozone and get them to clear the codes after i get a new gas cap and see what happens, and if that messes up, then ill ask ya for further assistance and where actually to go check the other stuff out.

Ok, well then... For a 2 door, see the pic at the bottom.

Yes, not having a clamp on the vent tube could be the entire cause of the problem. If that is leaking even in the slightest bit, it could throw the code you have. I'd get a clamp on there and see how things go. After that, if the code still is present, I'd try a new gas cap. They do go bad and since GM has the EVAP system integrity check, they throw a code. The clamp shouldn't be all that difficult to get to (I wouldn't think), but I have been surprised before. Again, the proceedure for replacing the fuel filler neck on a 2-door still does not require that the tank be dropped.

local://upfiles/667/A0C39752C06A4F65A4A85E8DF42383AC.gif

Ok,...i think i know of a way to do it w/out dropping the tank, atleast i hope, so ill do that and see if that's the problem. But see the thing that is bothering me is that like today it kinda dogged down at one point, just like surged only one time though, so im worried whats up. so im not sure

I'm betting you are just hyper sensitive right now. An EVAP error will cause no drivability concerns, unless your charcoal canister is full of fuel and that is making its way into the intake through the purge solenoid... If that's the case, then you need to replace the charcoal canister and possible the roll-over checkvalve on the tank. You can check this by pulling it out and tipping it upside down. I've got some work to do, but I'll get back to you later on where the charcoal canister is located.

ORIGINAL: swartlkk

I'm betting you are just hyper sensitive right now. An EVAP error will cause no drivability concerns, unless your charcoal canister is full of fuel and that is making its way into the intake through the purge solenoid... If that's the case, then you need to replace the charcoal canister and possible the roll-over checkvalve on the tank. You can check this by pulling it out and tipping it upside down. I've got some work to do, but I'll get back to you later on where the charcoal canister is located.



yeah i would appreciate it if you could tell me where this is located because honestly i dont work on cars but when i do, i do a good job and get it done roughly fast, so i dont know much of the charcoal canister or the roll-over checkvalve, so just let me know when you get back i appreciate it, im off work in thirty so ill check it when i get home, i appreciate it.

Another thing that is up w/it, it could be idle, i hate to say so many things w/out getting the first one fixed, but today i didnt even push on the gas and it for real just idling went up to 25 miles an hour even switch from first to second, so it felt, and im pretty sure it did because rpms dropped, and it hit 25 when i decided id go because people be hind me, so that was kidn of weird.

Ok,....im pretty sure i know what it is,..i went outside and started up my car, before i went to autozone and was gonna look where the air meter thing on the tank w/e that was you said, that i said didnt have a clamp on it, and that looked to be fine, so i was like what the hell, so then i go to the other sid eof the tank and i keep getting these little particles that are hitting me in the face that are wet, so i move to the side, and where the exhaust comes from the engine then connects to the cat i believe it's called, then exhaust continues to the back and shoots out there, its leaking where it comes from the cat, so i got to go get that fixed. Thanks for all your help when i get it fixed ill let you know how it is.

http://img6.picsplace.to/img6/10/car_pictures_016.jpg This is what was shooting back gas particles at me, and what i believe is causing the emissions.
http://img6.picsplace.to/img6/10/car_pictures2_021_000.JPGThis is the blazer we have been talking about.
If you look a little bit in front of the rear tire in this picture you can see a stain in the ground that was caused from about three minutes of the car running in idle and it dripping from where i took that other picture. The big stain towards the front of the car isnt mine.

Man does anyone know of a good photo hosting website that is free and can allow pretty big pictures.

So gas is leaking out of the muffler??? Wow, I'm surprised you haven't had a flame thrower for a tail pipe yet...

YIKES!!!

You might end up needing a new CAT before this whole thing is over. Way overly rich AFR can destroy a catalytic converter. Check your oil level, because if you are getting that much fuel out your tail pipe, I'm surprised the thing is still running... The new fuel pump could have blown out the FPR...

ORIGINAL: swartlkk

So gas is leaking out of the muffler??? Wow, I'm surprised you haven't had a flame thrower for a tail pipe yet...

YIKES!!!

You might end up needing a new CAT before this whole thing is over. Way overly rich AFR can destroy a catalytic converter. Check your oil level, because if you are getting that much fuel out your tail pipe, I'm surprised the thing is still running... The new fuel pump could have blown out the FPR...



I wont have any money til friday, is it okay to drive it until then? So you are pretty sure that is why the ses light is on because of the emissions? So if i change out the CAT do you think there is anything else besides that, that i will need to go change?

Ok,....where it was leaking was just the tail pipe is what a muffler specialist told me today, he looked at it, and said that it was probably just water, one guy said that i should change the CAT because it was prolly bad, but i went to two other places and they said that the CAT was fine, so no on that. So basically auto zone said they cant clear the codes if its an emissions code, because that can be fatal. So basically my last option is to spend alot of money trying to find out what the hell it is at a dealership for them to look and see what's up.

Can't clear a code because it is emissions and can be fatal... Hmm.. BS!

Anyway, the only reason why I said that you may be in for a new CAT is if it was gas pouring out of the muffler. Condensation (water) in the tailpipe is a normal thing.

The Evap purge code will go away if it is fixed and successfully completes the tests it goes through. Replace the gas cap and see how it goes after a week or two. The Evap code IS NOT a life threatening (vehicle speaking) code. I repeat, IS NOT!!

Alright kewl, well before i go to dallas i will change my gas cap, an dthen whebnever i get back we will do something about it, like take it to the shop. Well mani appreciate everything you have done for me alot. So thanks alot. And one other thing what do you think of the blazer? She's a beaut aint she

Yeah, definitely nice looking. Get that one annoying code taken care of and you'll be golden.

BTW, where did you get your cowl hood from?

Actually im not sure, my dad got it before he passed away, and he got it for like 350 bucks, he was working at a car dealership as a paint and body man and that one came in and he paid for it instead of it going on the right car, so they ordered another one. She's nice though, i like it alot.

That is a nice hood. Sweet lookin truck. Cardomain.com is a good photo website. They allow you to put info about your car, etc. It's free, and easy.

Thanks for the comments i appreciate it, and yeah, cardomain is the next website im throwing some pics up on. By the way, just to let everyone know, i changed out the battery in it and after switching out the battery it reset the codes, and my ses light hasnt been on for over two days, and about 600 something miles, so it must of been something minor.

yea cowl hoods r pretty sweet

ORIGINAL: 2001blazer

yea cowl hoods r pretty sweet

.


thanks

heck yeah, my topic is a hot topic, i mean my thread that is, that's kewl, first time ever to post on here and it's already a hot topic, just like me, cuz im hot stuff, lol, j/k, but ne wayz, the blazer's running good, no more ses light and so it's good, washed her yesterday and guess what, today it rains, that sux, next time im checking the weather. Gosh it looks good though when it's all clean, ill get a good pic of it during the day time and post it on here. -Josh, i really think i should of been able to join the top car of the month, lol..

ORIGINAL: biggee247
i really think i should of been able to join the top car of the month, lol..

Stick around long enough and I'll agree with you

Oh you dont worry about that, ill be here for a long time.

Hey swartlkk what is your first name, i figure id atleast get the first name of the guy who helped me out alot. lol. My name's josh. so nice to meet you.

post whore

ORIGINAL: 4lowlife

post whore

Who me? LOL don't think so, just doin' my job:D.

Anyway, my first name is Kyle, exactly as written out in my sig

\/ \/ \/ \/ \/ \/

Not you Kyle.

Lol,....okay i didnt even see that, well thanks for all your help kyle, and trust me im not a post whore, first time no here, getting to know some people and talk about some blazers so dont worry about that.

ORIGINAL: biggee247

Lol,....okay i didnt even see that, well thanks for all your help kyle, and trust me im not a post whore, first time no here, getting to know some people and talk about some blazers so dont worry about that.


I've seen MUCH worse, but not on BF.com! Its not a problem.

Not like it gets you anything but your name on a list...

Jusst jerkinin gyour chains guys. Now this makes me a post wh*re. lol!

I really hate to add-on to this post, but I am having a similar gas related issue and wanted to see if I could get any pointers on what to do about this before taking it into the dealer (which I don't mind since it's worth it to me). The other day I had my blazer in the garage just to do some general maintenance on the new rims (checking lug torque and cleaning) and heard some splash all of a sudden. Gas was dripping out the back end. I looked back there and there was gas leaking out of this black module, which I have never seen before.I disconnected the hose and 1 harness and brought it to the dealer. They told me it was a EVAP Purge Valve and had one for me for $22. Even though I didn't know if that was the problem, I figured what the hell, only $22 so maybe I'd get lucky. However, this didn't make a difference.

Any idea on what else I could check myself before bringing it into the shop? There is a harness that plugs into this valvle. One wire is definately a ground, and the other does not have constant power, which I assumed to be due to the fact that it was fed in from some other sensor or relay.

I appreciate any help on this. I will be working on this all weekend before leaving to LA for work on Tuesday. Thanks again!

Last post was 1/30/2006??

Please create a new thread in the proper Tech section. The New Member section is for new member introductions only, regardless of what may have transpired in this thread. Thanks!