: 2004 Escalade Fuel smell and P0455 code - specifics inside - I've built a EVAP smoker



PITT M3 RR
10-15-12, 08:13 PM
My trucks been on the road since 04 and some things are going wrong here and there, which is fine, but I'd like to get them squared away myself and gain the knowledge.

Current problem - Dash said to tighten the fuel cap, then the CEL came on and I, along with co-workers can smell heavy fumes near the rear driverside door? The cap was tight, so I investigated further and it seems the smell is coming from under the truck near the tank in the middle of the vehicle. Im getting 11.5 MPG which is a bit less than the 13.7-14.5 I should be seeing.

I can work on cars, but I also know that emissions problems SUCK to deal with. Now before I drop the tank to replace everything, I was wondering if anyone had a diagram of the emissions system for a 2004 escalade? and if there was any advice or common info to be had with this one?

I also went ahead and made an EVAP smoke tester. The epoxy is drying now, but the test runs were promising. Ill grab a video of what I did for that when its all dried up.

Also, would a bad fuel cap cause these smells from mid car? I dont see how they would? What are the symptoms of a bad fuel cap on these trucks? Thanks!

PITT M3 RR
10-15-12, 09:28 PM
http://www.youtube.com/watch?v=HbkGhUov74Q&feature=plcp

Thats the video of my smoke machine...anyone want to tell me the best place to start testing the truck?

jnrsesv
10-15-12, 10:59 PM
Start at the fuel inlet(?).

BTW genius smoke machine!

PITT M3 RR
10-15-12, 11:39 PM
Haah are you asking me or telling me!

Im thinking I'll pressurize the throttle body first to see if the EVAP purge valve is leaking. My understanding is, this should be sealed off until the computer opens it while driving. This will also show me any vaccum leaks I may have not been aware of.

Next, Ill bypass that and pressurize the other end of the purge valve which has the charcoal canister and the vent valv / gas tank and filler neck. You can see in the pic below, they are all linked so that should produce my leak.

Id still like info if anyone has any! This is a bitch of a problem.

98689

the cadillac man
10-16-12, 01:48 AM
Haah are you asking me or telling me!

Im thinking I'll pressurize the throttle body first to see if the EVAP purge valve is leaking. My understanding is, this should be sealed off until the computer opens it while driving. This will also show me any vaccum leaks I may have not been aware of.

Next, Ill bypass that and pressurize the other end of the purge valve which has the charcoal canister and the vent valv / gas tank and filler neck. You can see in the pic below, they are all linked so that should produce my leak.

Id still like info if anyone has any! This is a bitch of a problem.

<img src="http://www.cadillacforums.com/forums/attachment.php?attachmentid=98689"/>

Man your best bet is to see what codes your truck has before you go and do anything trust me and I doubt the gas cap is the cause of the fuel smell most likely a line is loose or off.

John P
10-16-12, 04:49 PM
Sounds like an O2 sensor that's done. If it's reading wrong the ecu can be pumping too much fuel in, therefor unburnt fuel and cel coming on. Do you notice a drop in Mpg?

This exact thing happened on my old 5 series and that's what the problem was. Hope this helps a bit.

PITT M3 RR
10-16-12, 05:20 PM
Thanks for the heads up, but I think the 02 sensor code would have been tripped rather than the p0455 evap code.

Going on further, I did the test with the smoke machine today and wouldnt you know it, smoke from the top of the tank under the vehicle. I could not follow the lines back to the source as the tank is right up against the body. So Ill be dropping the tank to have a look.

Further reading has shown me that the fuel pump to tank seal goes in the vehicles often and that could very well be my problem. What else goes on up there above the tank other than the fuel pump? Also what should be replaced while I am in there with the tank down?

I have 1/4 fuel so Ill drive a few more miles to empty it out even more.

the cadillac man
10-16-12, 06:16 PM
Thanks for the heads up, but I think the 02 sensor code would have been tripped rather than the p0455 evap code.

Going on further, I did the test with the smoke machine today and wouldnt you know it, smoke from the top of the tank under the vehicle. I could not follow the lines back to the source as the tank is right up against the body. So Ill be dropping the tank to have a look.

Further reading has shown me that the fuel pump to tank seal goes in the vehicles often and that could very well be my problem. What else goes on up there above the tank other than the fuel pump? Also what should be replaced while I am in there with the tank down?

I have 1/4 fuel so Ill drive a few more miles to empty it out even more.

I think there is two or three hoses going to the tank(i seen mine out when my pump was replaced)
If you want to YouTube has videos on how to drop the tank
How does your fuel pump sound is it noisy if yes then I suggest replacing as it will fail some point in time (I had mine go suddenly)
Also don't let the tank get to low as the fuel cools the pump(it's a flow thorough type)

PITT M3 RR
10-16-12, 06:36 PM
Nice, thanks.

You have a link to that vid? I can't find a damn thing on the Internet.

the cadillac man
10-16-12, 07:21 PM
Nice, thanks.

You have a link to that vid? I can't find a damn thing on the Internet.

Just search gm fuel pump replacement in google
You can try Cadillac escalade fuel pump replacement also if you still can't find nothing let me know and I will look up the video

PITT M3 RR
10-16-12, 09:48 PM
http://www.youtube.com/watch?v=PJqkZVTRakE

I found this vid..it looks very similar to our set up, I think Ill wing it based on this. Cant wait to get in there. Now I just need to find the fuel pump seal alone. :thumbsup:

the cadillac man
10-16-12, 09:56 PM
http://www.youtube.com/watch?v=PJqkZVTRakE

I found this vid..it looks very similar to our set up, I think Ill wing it based on this. Cant wait to get in there. Now I just need to find the fuel pump seal alone. :thumbsup:

www.gmpartsdirect.com is one site
I'd say that the seal has possible dry rotten due to age
Good luck(I would have done mine but my back won't let me)

PITT M3 RR
10-18-12, 02:14 AM
A bit more news, my SGT also works at sears auto one night a week for some reason and has invited me to swing by tomorrow to get up on the lift and lower the tank really quickly. So hopefully ill b fully operational tomorrow.

the cadillac man
10-18-12, 02:27 AM
A bit more news, my SGT also works at sears auto one night a week for some reason and has invited me to swing by tomorrow to get up on the lift and lower the tank really quickly. So hopefully ill b fully operational tomorrow.

That sounds great at least you are getting access to a lift without cost just be careful as dropping the tank to fast will damage the lines or electronic harnesses which work the pump and sensor.

jnrsesv
10-18-12, 05:56 AM
Believe it as you may. I just did this same exact procedure to a 2005 Nissan Frontier for a firend. She needed a new fuel pump. The youtube link is dead on, just becareful of the the gas lines grey push locks, like the video said push the lines in just a wee bit then squeeze tabs, pull fuel lines off.

From start to finish I was done in 45 minutes and I did not use a lift.

the cadillac man
10-18-12, 11:53 AM
Believe it as you may. I just did this same exact procedure to a 2005 Nissan Frontier for a firend. She needed a new fuel pump. The youtube link is dead on, just becareful of the the gas lines grey push locks, like the video said push the lines in just a wee bit then squeeze tabs, pull fuel lines off.

From start to finish I was done in 45 minutes and I did not use a lift.

If you ever have back pain you would understand why some folks use a lift.

PITT M3 RR
10-18-12, 05:03 PM
Ok I picked up the GM O-ring and the retaining circle for 31 bucks at the chevy dealer down the road.

http://www.tonkinonlineparts.com/images/parts/gm/fullsize/080609TN03-117.JPG

I told my SGT Ill just take care of it myself, so I've run the tank down to about 2 gallons or less and it's now at my parents house awaiting me to work on it. If it wasn't pouring and I didn't have to work tonight, I'd go ahead out, but screw that.

I'm back in the M3 which I didn't want to have out until spring; oh well.


The help is much appreciated guys. I'm also thinking of replacing the fuel line O-ring while I am up there. Thoughts?

the cadillac man
10-18-12, 06:48 PM
Ok I picked up the GM O-ring and the retaining circle for 31 bucks at the chevy dealer down the road.

I told my SGT Ill just take care of it myself, so I've run the tank down to about 2 gallons or less and it's now at my parents house awaiting me to work on it. If it wasn't pouring and I didn't have to work tonight, I'd go ahead out, but screw that.

I'm back in the M3 which I didn't want to have out until spring; oh well.

The help is much appreciated guys. I'm also thinking of replacing the fuel line O-ring while I am up there. Thoughts?

It's best to since you will have the tank out.

PITT M3 RR
10-23-12, 02:34 PM
Ok got in there and found the problem. The damn top of the fuel pump rusted away causing a brittle weak top.

I looked all over for a Delco fuel pump and found one for 704 locally...after shitting a brick I got them down to 513 which is still a racket. so I went with the Airtex for 378 at advanced...You guys think I made a bad choice? I am reading a few bad things about them, but have also read the same of some of the OEM stuff. Plus people dont actually go online and write how awesome a fuel pump is if it gives no problem...they just drive. The car started right up so..

I'm half tempted to order a delco from the internet for 259, swap it out in a week and return the airtex. Anyway, no major issues pretty easy job with empty tank and the right tools.

Pics
98976

98977

PITT M3 RR
10-23-12, 03:04 PM
Stand by, after reading what I wrote, I've decided to stop lying to myself and just buy the damn Delco. Advanced said the fuel pump return is just fine so no loss there. I actually am saving a shit ton of money which is a good thing. I bought it for 215.37 to my door from eBay.

So that was 704.00 Delco from dealer, 378 for shit airtex from advanced and this Delco is 215 from eBay. Now that I've done the job, I have no problem doing it again and I don’t want to have a failed pump with 23 gallons in the tank a week later. This is a peace of mind move and I feel better already ha-ha.

This time I'll do a write up, as I won’t be rushed.


98980

the cadillac man
10-23-12, 03:53 PM
Stand by, after reading what I wrote, I've decided to stop lying to myself and just buy the damn Delco. Advanced said the fuel pump return is just fine so no loss there. I actually am saving a shit ton of money which is a good thing. I bought it for 215.37 to my door from eBay.

So that was 704.00 Delco from dealer, 378 for shit airtex from advanced and this Delco is 215 from eBay. Now that I've done the job, I have no problem doing it again and I don&rsquo;t want to have a failed pump with 23 gallons in the tank a week later. This is a peace of mind move and I feel better already ha-ha.

This time I'll do a write up, as I won&rsquo;t be rushed.

<img src="http://www.cadillacforums.com/forums/attachment.php?attachmentid=98980"/>

You are better off going with the delco pump but damn that price is outrageous I went to the dealer and out the door it was no more then 600.00 total including labor.

PITT M3 RR
10-29-12, 12:44 AM
I finished up the fuel pump tonight in this freezing rain shit.

Funny thing is, my DELCO fuel pump was the exact same pump that was in the airtex box and even funnier, both said BOSCH on the top so I am stumped.

Anyone if anyone has any questions about my install, just ask and Ill do my best to help. I did the complete job in 1.2 hours.

the cadillac man
10-29-12, 01:13 AM
I finished up the fuel pump tonight in this freezing rain shit.

Funny thing is, my DELCO fuel pump was the exact same pump that was in the airtex box and even funnier, both said BOSCH on the top so I am stumped.

Anyone if anyone has any questions about my install, just ask and Ill do my best to help. I did the complete job in 1.2 hours.

As crazy as it sounds Bosch makes the delco pumps so airtex may be a licensed seller for Bosch to sell the pumps aftermarket it's the same way the fog light housings.

Ps I know how you feel about the freezing rain it sucks

PITT M3 RR
10-30-12, 02:59 PM
Well cars running good. I returned the first airtex (bosch) for the 367 or what ever back in my account so my total out of pocket cost was just about 270 thanks to ebay. Not too bad for a fuel pump swap.

jnrsesv
10-30-12, 03:58 PM
Congrats and thanks for the follow up!

A mere $270.00 and under a couple of hours getting to know your ride, sweet.....

Je357
10-01-13, 07:36 PM
I finally tackled the issue on my 2004 escalade. Had a bad gas smell coming from driver side of truck. Started out really light then got heavier as the puddle on the gas tank got bigger. Come to find out after dropping the fuel tank i had a rotted rusted fuel pump. The 3 steel lines that come off the pump had pin holes due to rust. I had no check engine light. Just fuel smell. Only dropped the tank cause after time i started getting fuel drips on the bottom of the tank because it became a puddle up there. Dropping the tank was not hard. Did it with a set of ramps. Drove the rear up on the ramps. And used a jack to support the fuel tank as i loosened the two fuel straps. Disconnected 6 lines altogether that were connected to the tank that included emission and fuel lines. After dropping tank cleaned the crap out of it and hit the lock ring with wd40. The pump is so badly rusted that the lock ring is bonded to the pump with rust. Im waiting for the new pump in the mail with a new lock ring. Bought the one from airtex. In the meantime i have it soaking with lube. U dont want to break the tabs for the lockring on the tank. Once i get the fuel pump and ring. Ill let u guys know how it turns out.

the cadillac man
10-01-13, 11:20 PM
I finally tackled the issue on my 2004 escalade. Had a bad gas smell coming from driver side of truck. Started out really light then got heavier as the puddle on the gas tank got bigger. Come to find out after dropping the fuel tank i had a rotted rusted fuel pump. The 3 steel lines that come off the pump had pin holes due to rust. I had no check engine light. Just fuel smell. Only dropped the tank cause after time i started getting fuel drips on the bottom of the tank because it became a puddle up there. Dropping the tank was not hard. Did it with a set of ramps. Drove the rear up on the ramps. And used a jack to support the fuel tank as i loosened the two fuel straps. Disconnected 6 lines altogether that were connected to the tank that included emission and fuel lines. After dropping tank cleaned the crap out of it and hit the lock ring with wd40. The pump is so badly rusted that the lock ring is bonded to the pump with rust. Im waiting for the new pump in the mail with a new lock ring. Bought the one from airtex. In the meantime i have it soaking with lube. U dont want to break the tabs for the lockring on the tank. Once i get the fuel pump and ring. Ill let u guys know how it turns out.

Wow you work fast
I know how you feel but mine had died but I had the pump done at my local dealer as I don't have the room to drop the tank(bad thing was it died and stranded me at the side of the road)

Je357
10-02-13, 09:44 AM
Oh man. I would of done the same if i was stranded. But since i knew where the leak was i decided to diy....sucks what rust can do...

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This site rocks!!!!!!!

Je357
10-08-13, 09:23 PM
Pump in........... new lock ring ..........no fuel smell.....no leaks......done.....thank u fellas for the help....

the cadillac man
10-09-13, 01:24 PM
Glad to help

Jophusp
10-09-13, 03:12 PM
Had a similar issue with my Envoy. It was a crack in the Fuel Return Line. ( one of the three little hoses going into the top of the Fuel Pump.) Caused all kinds of problems. I would check all those little hoses while your down there. Good luck.