Exhaust leak engine trouble light

So,

What was the exact code number? (example, p0171)

The Medic

The technician who hooked up the diagnostic reader did not tell me what the code number was.

Can you go back over to Auto World and have them scan it again?

Better still, Get you own scanner.

Cheaper ones are available.

Is not like your vehicle/family/friend's is going to change from OBD II anytime soon.

This would make you the hero when theirs started acting up!

Waiting on more information.

The Medic

The exact code number is p0456. I am not physically able to do a lot myself. I am a 100% disabled, combat wounded, Vietnam veteran with limited mobility. I have to depend on others for assistance.

Hello DUUGAN,

All of us here at 2CarPros want to thank you for your service and your sacrifice. It is hard to express just how much we appreciate you and all of the men and women serving or have served in the military. Thank you does not seem enough. With that said thank you from the bottom of our hearts.

Sincerely,

The 2CarPros Team.

That code is for a small leak in the EVAP system. This is usually caused by a hose or tube has come off or has a split.

Here are a guide that will help you get the problem fixed or at least give you an idea what needs to be done:

https://www.2carpros.com/articles/evap-system-code-repair

and

https://www.2carpros.com/articles/how-emission-control-systems-work

Please let us know what happens so we can continue helping you.

Cheers, Ken.

Thanks again for your service!

Thanks for getting the code, there are lots of them, many can be related to the same parts/problems. Having the code can narrow things down.

I can possibly get vacuum diagrams if you need them.

Keep us posted.

The Medic

I would greatly appreciate the vacuum diagrams so I can see the parts that make up the system. While I trust my mechanic, who I have used in the past, I like to take your comments and suggestions with me when I go to take the Wrangler to him. If I can afford the parts that make up the entire EVAP system, I would probably have him change the system out rather than him replacing part by part until the problem is remedied.

The last time you helped me was when I had the Park-No Start condition. Jeep wanted to charge me an arm and a leg for a part that was not necessary. The problem was the Jeep's four year old battery! I really enjoy consulting you guys for your expert assistance.

EVAP parts. Common leak points on these are the ESIM valves and the purge solenoids stick. Unless you live in a rust belt state, then the lines get pinholes, five minutes on a smoke machine and the leak should show up.

I live in Central New Mexico. Our average annual humidity is 16%. Thanks. Come payday and I will take my Jeep to the mechanic and show him what you guys have suggested. The Jeep is our "baby", and we' have driven it through tornadoes and other horrible weather only to come out unscathed! We feel helpless when "baby" cries and we cannot understand its sobs! LOL

LOL yep, please let us know what happens.

I get sa (strike that).

I get depres (strike that).

I have panic attacks/ angina/ almost go into a coma when one of mine has a boo boo!

We still have not seen yours yet!

Let's see a picture after you see the doctor.

The Medic

Finally got the smoke test performed on my Wrangler. The test revealed that the leak associated with code 0456 was at the rollover valve on top of the gas tank. I cannot find a replacement rollover valve, primarily because I don't know where to look (I'm old!) The mechanic told me that, when he touched the hose fitting, the valve broke off. I must assume he meant one of the three fitting arms of the molded roller valve where the hose attaches(?) He told me he does not know the name of the part nor where to find a diagram of it. He's not around to ask since this is elk hunting season in New Mexico! I went to the Jeep dealer in my home town, who is known for ripping off customers, and asked the Service Manager the name of the part. That is where I was told that it is the rollover valve. Where can I get a replacement for my 2010 Wrangler Unlimited Mountain?

I will guess he means the part number 1. It appears it is a part of the tank itself as I don't find anything to show a separate part number. 52059729AN is the part number for the complete tank, looks to be about $600.00 new. You might want to see if you can find a good used one. Or see if the stealership can get a replacement valve.

I like your term: "stealership"! I checked with a Jeep stealership and was told that the rollover valves are/were permanently glued in place at the manufacturer, hence, there is no part number for them. I was quoted over $800 without any mounting hardware or labor! I'm retired and am on a fixed budget. I cannot do that amount without severly hampering my household budget! I The Chilton Jeep Wrangler 1987-11 Repair Manual shows the gas tank with the two rollover valves. Does that mean that any model of the Jeep Wranger between (and including) 1987-2011 has the same gas tank? If so, I'll research if there are any used parts places in Albuquerque to try and locate one.

The tank you need fits a 2007- 2017 Wrangler 4 door with 4 wheel drive.
52059729AN is the Jeep part number.

Thanks, Steve. I guess I'll go on a parts hunt after the Holiday Season.

What exactly broke off?

Just the plastic nipple that the hose goes over?

Or further back into the body of it?

I reckon a pic would be too much to ask?

Vee haf ways!

The Medic

I really don't know if it was a hose nipple or what! The mechanic was leaving on an elk hunt so I didn't get any further info. I did start looking for the rollover valve but couldn't find it as a standalone part. I'm told that it's on top of the fuel tank housing, inside the right rear fender well.

I was maybe looking at the possibility of chopping off the nipple (in a decent spot- if it could be done) Carefully drilling (maybe tapping)/ epoxying in a threaded brass/ plastic replacement nipple.

As I said/ implied, if it will work, enough room with what's left, if the damage is not further into the valve. It Cannot interfere with the workings of the valve!

Brass hose fittings come in various hose sizes and also different other ends ranging from pressed fits to straight threads or National pipe threads, even metric stuff.

Basically the valve is a vent for the tank which closes if the tank becomes somewhat upside down in a mishap. You just need a good seal which would still allow the check valve to operate and the vent still work as it should. But only if this repair is feasible.

Just a thought,

The Medic

I will broach the subject when the mechanic returns from hunting (possibly tomorrow.) Right now, the engine trouble light indicator is reading GASCAP, which I know is not true! Thanks for the suggestion.

Please let us know what you find. We are interested to see what it is.

Cheers, Ken

I did some more research on the gas tank, and found a new one for $500+ at rockauto.com; however, I went to see the mechanic and suggested what you had in the above (previous) exchange. He actually like the idea and said (after the Holiday Season expenses) will drop the tank, drill into where the damaged nipple was, and epoxy-in a brass nipple for about half of what a new tank would cost me. Thanks. I'll let you know the result after the work is done.

Be wary of epoxy repairs they tend to leak. Let me know how it goes. Happy Holidays!

After reading your remarks, I decided to order a new fuel tank, although quite expensive. It arrived over the holidays so I didn't get to take it to the mechanic until 2 days ago. The tank has two rollover valves: a small one and a large one. When we unpacked the new tank, the large rollover valve was cracked and the largest nipple on it was broken!!!

Another look at the damaged (broken nipple) of the original tank revealed that the nipple was still inside the sensor hose. So, my mechanic put a metal schunt in and epoxied it. A $60 dollar fix that I hope lasts!

Me too ;) let us know if you need anything else.

Use 2CarPros anytime, we are here to help. Please tell a friend.

Cheers, Ken