EVAP Leak Detection Pump Tear Down 🪓 And Testing Chrysler Dodge Jeep

Learn about the Leak Detection Pump (ESIM) and how it works in this tear down. This unit indicates if you pass your emissions test 😮‍💨 or have engine codes: p0440, p0442, p0446, p0445, p0450, p0455, p0456, p0457. Please 👍 &🔔 SUBSCRIBE & mention in the COMMENTS your thoughts. 👉 For more details click SHOW MORE.
The Leak Detection Pump is a common product on all gas filled cars and is usually easy to replace and quite affordable at around $35.
This video shows specifically how to remove the EVAP pump from the rear wheel area:
👉 • How to remove the EVAP...
AND
This video shows how to remove the Purge Valve Canister:
👉 • Remove Stuck EVAP Purg...
Here is the part used specifically for Chrysler, Dodge, and Jeep vehicles:
👉 amzn.to/38pNh6w
AND the only tool I used in this tear down was an Oscillating tool
👉 amzn.to/36P3e61
Also, If you want you can help support this channel and get me a cup of coffee ☕ here:
➡️ www.buymeacoffee.com/randomca...
OR
➡️ ko-fi.com/fixcaryourself
OR
➡️ Click the SUPER THANKS button above.
Thanks for watching and if you have something that could help someone else then please create a video and share it so we can all continue to learn and grow!
Please 👍👍👍 AND 🔔 #FixCarYourself

[@TheOtiswood]

Nice job with a bit of humor and wit. You may have saved many from expensive tests and repairs that were not needed Thank you!

[@FixCarYourself]

That's want I was going for... save money and time!

[@TheRealAndrewDeanhardt]

My car (2015 Jeep Renegade 2.4l 4-cylinder) has had tripped P0440, P0452, and P0456. I took it into my local mechanic for diagnosis. After the problem being diagnosed and having the engine computer flashed by Mopar, I have narrowed it down to being this specific part. I ordered parts and after watching this video, I feel more confident in being able to perform the job myself because labor is expensive 😅 I appreciate the how-to in the previous video!

[@TheRealAndrewDeanhardt]

Side note: Have you done a transmission fluid change on a Chrysler 9 speed (948TE) transmission?

[@FixCarYourself]

Glad it helped and gave you a good idea on how to tackle this, and I'm glad your doing it yourself. Labor is getting even more outrageous, but at least your learning more about your car by working on it.

[@FixCarYourself]

Yes I have done many transmission fluid changes. Specifically on a 722.6 transmission. Actually I'll be posting a series of videos on this...not just changing it but other tips that will help others out, that for some odd reason I haven't seen others on KZbin post or talk about, but I think will really help a lot of others out in case they run into problems!

[@sourdruid1]

Ended up researching my p0440/p0456 code and this did the trick. I initially got got the purge valve code and changed that and still had the code. Checked vacuum hoses and charcoal canister and after more research saw nothing wrong so last cheap option before a smoke test or canister change would be the detection pump.

[@FixCarYourself]

Nice job! Glad this helped. You did the right thing before doing the smoke test. Glad you fixed the problem yourself.

[@Onceinawhileee]

Thanks man

[@FixCarYourself]

You're welcome!

[@MrtalentedReid]

Good job

[@FixCarYourself]

Thanks!

[@jasurkan]

I was unable to fill gas tank without the nozzle clicking off continuously. Changing this was an option. The video i watched said if you shake the part and it rattled, it was no good. Mine did that and the new replacement did not rattle. I drove to gas station and was able to fill up tank with no issues. 2014 Ram 1500.

[@FixCarYourself]

Great job!

[@MrMctheking]

@@FixCarYourself Ok my old or new dont rattle. Is that good or bad at this point its hard to tell. Video here says rattle good. You say rattle bad......

[@Mr.Torres-Mr.Towers]

@@MrMcthekingwhen I replaced my old one it Rattled and the New one did NOT rattle so 🤷🏻‍♂️

[@octavianoarredondo3436]

Hello, thank you ver much for your video, congrats for your Good work! I have a question about the eléctrical switch, is there a way to check it? I provided 5v to the switch simulating the pcm and there is no any sound inside, I should hear the mechanical switch movement sound, right?

[@FixCarYourself]

You supplied power to it so that's good. Normally you would hear the sounds of the weights moving when you blow from the back or the front.

[@octavianoarredondo3436]

@@FixCarYourself great, thank you ver much for your help!

[@jnstrcklnd]

So i have a p0456 code and i replaced this today. The old one rattles like your did and the brand new one i installed doesnt rattle.

[@FixCarYourself]

Good to know. This should help others, and further make them aware.

[@TheRealAndrewDeanhardt]

Rural counties in Oregon don't require Emissions tests that I'm aware of. Yet.

[@FixCarYourself]

Lucky...I doubt they will anymore with many cars going into electric. It would be a waste for the local government to set this up as the USA transitions.

[@chrismba777]

Well, Iowa has NO such emissions tests; and as we are now deep RED, and getting REDDER, there never will be, thankfully. If there were, 2/3 of all farm vehicles would fail miserably.

[@FixCarYourself]

Very interesting!

[@kevinlange7319]

With the Engine off, and a Smoke test running I get smoke out of the ESIM breather vent behind the Gas Filler. (2015 Jeep JKU). Is the Valve for the vent supposed to be closed with engine off or open?

[@FixCarYourself]

smoke should not come out from the breather vent.

[@MrMctheking]

I have purchased the exact item from the link. It arrived and looks and functions differently than the one in your video. The weights don't move and there are 2 instead of one. The new one looks exactly like my current one with the 2 weights and the current weights don't move either. Amazon tells me I bought this exact one 5 years ago and that is the one I am replacing.....Even in the item images there are two weights not one like you show......so whats incorrect here? The part or that it should have a single weight or that they should move? Thanks---In NY and they really care

[@FixCarYourself]

How do you know if their is only 1 weight or 2. You can't really tell unless you cut it open. The weights may move when certain pressure is applied to it.

[@robertfoilesjr1337]

Electrical testing of components should be included in repair videos to prove their at fault in my opinion otherwise just a parts changer.

[@FixCarYourself]

I agree, sadly dealerships (Stearlerships) want to make their money, and just jump to conclusions without properly diagnosing, and replace the part. You have no idea how much robbery occurs in the automotive industry...specifically with most repair shops. It's so sad!

[@dustenevans6047]

I have 2018 charger sxt plus replaced purge valve canister, fuel tank pressure sensor still have code p0452 had water in my Evaporative System Integrity Module and the charcoal canister bought new esim and baking the charcoal canister at 225 degrees over night to dry, I’m curious how did I get water there and why? Also will this help?

[@FixCarYourself]

Not sure about the water, but this could help as that code is tied to the evap system, and you said you replaced pretty much many other components of the emission system so it probably wont hurt changing this as this is also a relatively inexpensive part.

[@joevignolor4u949]

It's not a Leak Detection Pump (LDP). Its a EVAP System Integrity Monitor (ESIM). They are not the same thing. Older Dodge Caravans used a LDP but the newer ones use an ESIM. There is a lot of confusion in the auto parts world about exactly what this component is called. An LDP uses engine vacuum to cycle a diaphragm to pump up the system to test it for leaks. A system that has an ESIM uses the normal pressure variations created in the gas tank when the fuel vaporizes and condenses to test the system so no pump is required.

[@FixCarYourself]

Yep that's right. And very nice quick explanation on the differences. Lot of part suppliers still call them a Leak detection pump though even if they are an ESIM.

[@Mike__P]

I just bought a new one of these for my Jeep, and it did not make any noises when shaking it. The old one I pulled off the car did make a noise when shaking.

[@thechampion9525]

​@@FixCarYourselfhi 👋 I have a question can I replace de evap just like a maintenance thing ? Or need to wait until fail .. thanks

[@jnstrcklnd]

​@Mike__P same for me. I did one today on my sister's 08 jeep grand cherokee. Did this fix yours?

[@Mike__P]

@@jnstrcklnd nope. Code came back a day later.

[@Exithios]

I understand that you suggest a smoke test can cause the pump to fail but, unfortunately, I had a p0456 that I couldn't trace and was left with smoking the system down from the purge line. The results were immediate, smoking pluming from the detection pump filter in the fender well. This is a 3 month old autozone pump and leads me to assume the defect is in the diaphram seeing as the weights were easily mobile. Any input would be appreciated.

[@FixCarYourself]

Normally I would say get a new Evap pump replaced by AutoZone. It should have a 1 year warranty. But 1st make sure the Evap pump is on correctly and tightly. If its not locked into place that could be why its leaking. Or the rubber hose that connects to it could have a crack or tear it it. This is a detailed video that I would suggest you to look at to get a better idea involving the removal and installation of an EVAP: kzbin.info/www/bejne/Z4fEpaCKgrVqfNU Let me know if this helps.

[@FixCarYourself]

The smoke test probably wouldn't hurt a new Evap pump. However, not a big deal using the smoke pump, because this part is relatively cheap and not too difficult to replace if need be. Also the EVAP is usually the 1st thing replaced if their is an emissions problem because its the cheapest part for the most part.

[@FixCarYourself]

I forgot to mention, but also make sure the rubber O-ring is also attached to the Evap pump. Without that, the pump won't be in tight enough.

[@Exithios]

I appreciate the reply. The seal was replaced, for sure. I've done quite a few of these but usually not when the pump is this new. The hose was pulled and in tact. It was definitely coming from the cylindrical filter attached to the opposite end of the hose. The pump has been warrantied and now I will do some test driving to ensure the monitors clear. My inclination suggests the diaphram in the pump failed but we will see soon enough.

[@FixCarYourself]

Hope it all worked out for you! Did any codes come back on? Was it proven that the diaphragm went bad?

[@duanelinnenbringer6675]

What about the LDP solenoid ckt or code p1765

[@FixCarYourself]

I'm not sure the question you are asking.

[@chrisbradley1192]

For some reason Mazda decided to make this replacement job almost impossible.

[@FixCarYourself]

I believe it. Each car has their pain points.

[@JL-gx6by]

After P0440 appears, the car has a hard time starting. Is the culprit a fault? thank you

[@FixCarYourself]

I don't think so. This code sounds more like its an emissions issue, and the starting issue could be something else. Please check for other codes.

[@Superior2020]

Im curious. Is it possible that a bug could get stuck in there? I found one in mine stuck to the long weight.

[@FixCarYourself]

It's a sealed unit. So very unusual unless their was a crack in it. Or a bug crawled in when it was being made at the factory.

[@Superior2020]

@@FixCarYourself I agree. Thanks

[@FixCarYourself]

👍

[@kylefrancisco3020]

Arkansas no car inspection but you renew your tags every year and property tax need to be paid every year as well lol

[@FixCarYourself]

I actually knew that about Arkansas. Lucky!

[@brandonmurray2409]

This video is helpful. But the only thing I'll say is: It would be helpful to "see" more of where this part is, how to remove everything, replace the part, and put everything back together. On other note, Arizona has reasonably-strict Emissions Testing and it's required every 2 yrs you go to register your tags with the AZDMV

[@FixCarYourself]

Interesting about Arizona. This cant be repaired this part, as its a sealed unit. Also they are relatively inexpensive to replace.

[@eatshiy]

My evap leak went away on its own!!🤔 No code AND I passed emissions!🤔🤔

[@FixCarYourself]

That happened to me 1 time before not sure if it was evap specific, but maybe something else to do with the emissions. And it went away.

[@MrMctheking]

Can I get that part too please!

[@khalifgabourel1745]

Florida

[@FixCarYourself]

Florida doesn't have emissions...nice!

[@engrxtn]

Ohio doesn’t require an emissions test…

[@FixCarYourself]

Interesting! Wish more states dropped this policy or at least reduced it in some ways or make the parts and labor more affordable so one could pass the emissions test.

[@engrxtn]

@@FixCarYourself agreed…I also lived in a State that required emissions test annually and the employees always seemed to know how to bypass the test machine and produce fake results….sometimes they didn’t hook my car to the machine and gave me a pass test.

[@FixCarYourself]

@@engrxtn ha that's funny.

[@davidalonzojr8617]

From my understanding, if it rattles when you shake it, it is toast. It shouldn't rattle like that.

[@FixCarYourself]

I get mixed opinions on this all the time.

[@rtz549]

Brand new out of the box it rattles and moves freely.

[@FixCarYourself]

Thanks for sharing!

[@duncanranger]

Tennessee don't care

[@FixCarYourself]

Interesting nice to know. Thanks!